Friday, December 09, 2022

NASA Preview of Artemis I Orion Spacecraft Splashdown


On Dec. 8, 2022, NASA experts previewed the upcoming entry, descent, and splashdown of the Orion spacecraft, which will conclude the Artemis I mission. After 25.5 days in space, Orion is expected to splash down in the Pacific Ocean off the coast of San Diego at 12:40 p.m. EST (17:40 UTC) on Sunday, Dec. 11, 2022. The exploration ground systems recovery team from NASA’s Kennedy Space Center in Florida, working with the U.S. Navy, will recover the spacecraft. Live coverage for this event begins at 11 a.m. EST (16:00 UTC).

Just before re-entry, the crew module and service module will separate and only the crew module will return to Earth while the service module burns up in Earth’s atmosphere upon re-entry over the Pacific Ocean. The Artemis I trajectory is designed to ensure any remaining parts do not pose a hazard to land, people, or shipping lanes.

After separating from the service module, the crew module will prepare to perform a skip entry technique that enables the spacecraft to accurately and consistently splash down at the selected landing site. Orion will dip into the upper part of Earth’s atmosphere and use that atmosphere, along with the lift of the capsule, to skip back out of the atmosphere, then reenter for final descent under parachutes and splash down. This technique will allow a safe re-entry for future Artemis missions regardless of when and where they return from the Moon.

Earth’s atmosphere initially will slow the spacecraft to 325 mph, then the parachutes will slow Orion to a splashdown speed in about 10 minutes as it descends through Earth’s atmosphere. Parachute deployment begins at an altitude of about five miles with three small parachutes pulling the forward bay covers away. Once the forward bay cover separates, two drogue parachutes will slow and stabilize the crew module for main parachute deployment. At an altitude of 9,500 feet and a spacecraft speed of 130 mph, three pilot parachutes will lift and deploy the main parachutes. Those 116-foot-diameter parachutes of nylon broadcloth, or “silk,” will slow the Orion crew module to a splashdown speed of 20 mph or less.

The parachute system includes 11 parachutes made of 36,000 square feet of canopy material. The canopy is attached to the top of the spacecraft with more than 13 miles of Kevlar lines that are deployed in series using cannon-like mortars and pyrotechnic thrusters and bolt cutters. Learn more about Orion’s parachute system in the Artemis I reference guide.

NASA TV coverage of Artemis I’s return to Earth begins at 11 a.m. EST on Sunday, Dec. 11. The Orion spacecraft is scheduled to splash down in the Pacific Ocean at 12:40 p.m. near Guadalupe Island.
Watch here: 

The first in a series of increasingly complex missions, Artemis I is an uncrewed flight test that will provide a foundation for human deep space exploration. It will demonstrate NASA's commitment and capability to extend human existence to the Moon and beyond. Orion is completing a 25-day test of all key systems. It will travel 280,000 miles from Earth, thousands of miles beyond the Moon. Orion will stay in space longer than any ship for astronauts has done without docking to a space station and return home faster and hotter than ever before.

On the Artemis III Mission, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars. 

Orion launched aboard the Space Launch System (SLS) rocket at 1:47 am EST (6:47 UTC) on Nov. 16, 2022, from historic Launch Complex 39B at NASA’s Kennedy Space Center.

The Artemis I mission is the first integrated test of NASA’s deep space exploration systems: the Orion spacecraft, the SLS rocket, and Kennedy Space Center's Exploration Ground Systems.

Learn more about Artemis I: https://www.nasa.gov/specials/artemis-i


Credit: National Aeronautics and Space Administration (NASA)

Duration: 57 minutes

Release Date: Nov. 8, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #JourneyToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #STEM #Education

NASA's Space to Ground: The Power of Teamwork | Week of Dec. 9, 2022

NASA's Space to Ground: The Power of Teamwork | Week of Dec. 9, 2022

NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. 

Follow the International Space Station blog for updates: https://blogs.nasa.gov/spacestation/

Expedition 68 Crew

Station Commander Sergey Prokopyev of Roscosmos (Russia)

Roscosmos (Russia): Flight Engineers Anna Kikina & Dmitri Petelin

NASA: Flight Engineers Nicole Mann, Frank Rubio & Josh Cassada

JAXA (Japan): Flight Engineer Koichi Wakata


An international partnership of space agencies provides and operates the elements of the  International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada. The ISS has been the most politically complex space exploration program ever undertaken.


Learn more about the important research being operated on Station:

https://www.nasa.gov/iss-science 

For more information about STEM on Station:

https://www.nasa.gov/stemonstation


Credit: NASA's Johnson Space Center (JSC)

Duration: 2 minutes, 34 seconds

Release Date: Dec. 9, 2022


#NASA #Space #ISS #ESA #CubeSats #iROSA #SolarArray #Spacewalk #EVA #Astronauts #FlightEngineers #FrankRubio #JoshCassada #NicoleMann #KoichiWakata #JAXA #Science #Technology #HumanSpaceflight #Expedition68 #UnitedStates #Russia #Japan #日本 #International #STEM #Education #HD #Video

Thursday, December 08, 2022

Planet Mars Plays "Peekaboo" with The Moon

Planet Mars Plays "Peekaboo" with The Moon






The Lunar Occultation of Mars: An occultation is an event that occurs when one object is hidden from the observer by another object that passes between them.

During the early hours of December 8, 2022, the almost Full Moon occulted the planet Mars from the viewpoint of Earth.

Mary: "I imaged it with a William Optics 70mm refractor, Celestron 3x Barlow, ZWO ASI120MC camera. I used my portable Skywatcher AZGTi mount because I wasn't sure if I'd get the egress from my permanent pier as there are trees in that direction. Additionally I took some widefield photos with a Canon 1100D with 30mm zoom lens."

"I shot 2 or 3 thousand frame videos and had to two separate stacking processes on them, one for the Moon and one for Mars because they were moving so quickly relative to each other. I then processed the images in Lightroom and Fast Stone Image Viewer. I'm slightly astounded to have captured surface features on Mars with such a small refractor, but this amazing telescope often surprises me with how versatile it is! The Celestron 3x Barlow is excellent quality too, which really helped with this."


Credit: Mary McIntyre, Fellow of the Royal Astronomical Society (FRAS)

Mary's Flickr Page: https://www.flickr.com/photos/spicey_spiney/ 

Image Capture Date: December 8, 2022

Location: Oxfordshire, United Kingdom (UK)


#NASA #Space #Astronomy #Science #Mars #Planet #Moon #Occultation #Astrophotography #MaryMcIntyre #FRAS #RoyalAstronomicalSociety #Oxfordshire #UK #Telescope #Celestron #Astrophotography #CitizenScience #SolarSystem #STEM #Education

Orion: "Goodbye Moon! Hello Earth!" | NASA's Artemis I Moon Mission

Orion: "Goodbye Moon! Hello Earth!" | NASA's Artemis I Moon Mission







NASA's Orion spacecraft continues its journey home to Earth, which appears in these images from December 7, 2022, as a crescent, still 234,000 miles away. The Moon appears smaller in these images from Orion’s perspective on flight day 22 as the Artemis I spacecraft continues distancing itself from our lunar neighbor, over 125,000 miles away at this point.


The Artemis I spacecraft is scheduled to splash down in the Pacific Ocean on Sunday, Dec. 11. 

Orion launched on the Space Launch System (SLS) rocket from Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Wednesday, Nov. 16, 2022. Artemis I is an uncrewed flight test of our SLS rocket, Orion spacecraft, and exploration ground systems for future Artemis missions—which will provide the foundation to send humans to the lunar surface, develop a long-term presence on and around the Moon, and pave the way for humanity to set foot on Mars.

More on Artemis I: https://www.nasa.gov/specials/artemis-i


Credit: NASA's Johnson Space Center (JSC)

Image Capture Date: Dec. 7, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #JourneyToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #STEM #Education

Orion's Lunar Close Flyby Images | NASA's Artemis I Moon Mission

Orion's Lunar Close Flyby Images | NASA's Artemis I Moon Mission







Cameras mounted on the crew module of NASA's Orion spacecraft captured these views of the Moon’s surface. On flight day 20 of the Artemis I mission, the spacecraft made its second and final close approach to the Moon before its returned powered flyby burn. Orion is expected to splashdown off the coast of San Diego at 12:40 p.m. EST (17:30 UTC) on Sunday, Dec. 11, 2022.

Orion launched on the Space Launch System (SLS) rocket from Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Wednesday, Nov. 16, 2022. Artemis I is an uncrewed flight test of our SLS rocket, Orion spacecraft, and exploration ground systems for future Artemis missions—which will provide the foundation to send humans to the lunar surface, develop a long-term presence on and around the Moon, and pave the way for humanity to set foot on Mars.



Credit: National Aeronautics and Space Administration (NASA)
Image Capture Date: Dec. 5, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #JourneyToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #STEM #Education

Are Wildfires Getting Worse? – We Asked a NASA Scientist

Are Wildfires Getting Worse? – We Asked a NASA Scientist

Are wildfires getting worse? Unfortunately, yes. 

Changes in our climate, along with other factors, have led to wildfires increasing in intensity, severity, size and duration. NASA climate and wildfire expert Liz Hoy explains how and why NASA studies these events from the ground, air, and space to better understand the impacts they have on both a local and global scale. 

Learn more: https://www.nasa.gov/fires


Credit: National Aeronautics and Space Administration (NASA)

Producers: Jessica Wilde, Scott Bednar

Editor: Daniel Salazar 

Duration: 1 minute, 42 seconds

Release Date: Dec. 7, 2022


#NASA #NOAA #Space #Satellites #Science #Earth #Planet #Atmosphere #EarthObservation #RemoteSensing #Environment #ClimateChange #GlobalWarming #GlobalHeating #GHG #Climate #Weather #Wildfires #GSFC #UnitedStates #Technology #STEM #Education #HD #Video

Explore NASA's Orion Crew Capsule with Astronaut Randy Bresnik

Explore NASA's Orion Crew Capsule with Astronaut Randy Bresnik

The focus of the flight of Artemis I is to test Orion’s systems ahead of crewed missions.  Starting with Artemis II, human crew members will be on board. You may be thinking, “what is it like inside?”  I’m glad you asked . . . follow along as NASA astronaut Randy Bresnik guides us through the interior of the Orion spacecraft and a close up look at elements that will support a crew on humankind’s next trip to the Moon.

Though Artemis I is an uncrewed mission, what we've learned from our flight test of Orion and NASA's Space Launch System will help us get ready for future Artemis missions, which will build a long-term human presence on the Moon—and prepare us to land the first NASA Astronauts on Mars.

With Artemis missions, NASA will land the first woman and first person of color on the Moon, using innovative technologies to explore more of the lunar surface than ever before.

More on Artemis I: https://www.nasa.gov/specials/artemis-i


Credit: NASA's Johnson Space Center (JSC)

Duration: 2 minutes

Release Date: Dec. 7, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #ArtemisII #ArtemisIII #Orion #Spacecraft #Astronauts #RandyBresnik #DeepSpace #MoonToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #STEM #Education #HD #Video

Reflections on NASA's Artemis I Mission: Henry Louis Gates Jr.

Reflections on NASA's Artemis I Mission: Henry Louis Gates Jr. 

Henry Louis Gates Jr. reflects on the Artemis I mission around the Moon:

"These images reveal with stunning, humbling sublimity, the triumph of the human spirit in breaking beyond the confines of the Earth. Let us hope that this milestone will inspire us to transcend 'all possible manner of differences,' as the great Du Bois once put it, and keep foremost in mind all that we have in common as human beings; as sisters and brothers here on Earth." 

Though Artemis I is an uncrewed mission, what we've learned from our flight test of Orion and NASA's Space Launch System will help us get ready for future Artemis missions, which will build a long-term human presence on the Moon—and prepare us to land the first NASA Astronauts on Mars.

With Artemis missions, NASA will land the first woman and first person of color on the Moon, using innovative technologies to explore more of the lunar surface than ever before.


Credit: NASA/Henry Louis Gates Jr.

Duration: 1 minute

Release Date: Dec. 8, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #Humanity #Future #STEM #Education #HD #Video

Kilonova Discovery Challenges our Understanding of Gamma-Ray Bursts | NOIRLab

Kilonova Discovery Challenges our Understanding of Gamma-Ray Bursts | NOIRLab

Episode#58 While studying the aftermath of a long gamma-ray burst (GRB), two independent teams of astronomers using a host of telescopes in space and on Earth, including the Gemini North telescope on Hawai‘i and the Gemini South telescope in Chile, have uncovered the unexpected hallmarks of a kilonova, the colossal explosion triggered by colliding neutron stars. This discovery challenges the prevailing theory that long GRBs exclusively come from supernovae, the end-of-life explosions of massive stars.

Gamma-ray bursts (GRBs)—the most energetic explosions in the Universe—come in two varieties, long and short. Long GRBs, which last a couple of seconds to one minute, form when a star at least 10 times the mass of our Sun explodes as a supernova. Short GRBs, which last less than two seconds, occur when two compact objects, like two neutron stars or a neutron star and a black hole, collide to form a kilonova. 


Credit: NOIRLab

Images and Videos:   

International Gemini Observatory/NOIRLab/NSF/AURA, Fermilab, M. Zamani, NASA/ESA, J. da Silva/Spaceengine, CI Lab, N. Bartmann  

Duration: 1 minute, 22 seconds

Release Date: Dec. 5, 2022


#NASA #Astronomy #Space #Science #Stars #NeutronStars #Kilonova #GRB #GammaRayBursts #Astrophysics #Cosmos #Universe #NOIRLab #AURA #NSF #GeminiSouthTelescope #Chile #SouthAmerica  #GeminiNorthTelescope #Hawaii #UnitedStates #STEM #Education #HD #Video

Wednesday, December 07, 2022

Orion Captures Crescent Earthrise | NASA's Artemis I Moon Mission

Orion Captures Crescent Earthrise | NASA's Artemis I Moon Mission

On flight day 20, Dec. 5, 2022, NASA's Orion spacecraft captured the crescent Earth in the distance as the spacecraft regained communications with the Deep Space Network (DSN) following its return powered flyby on the far side of the Moon. The spacecraft will splash down on Sunday, Dec. 11.

Orion launched on the Space Launch System (SLS) rocket from Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Wednesday, Nov. 16, 2022. Artemis I is an uncrewed flight test of our SLS rocket, Orion spacecraft, and exploration ground systems for future Artemis missions—which will provide the foundation to send humans to the lunar surface, develop a long-term presence on and around the Moon, and pave the way for humanity to set foot on Mars.


Credit: National Aeronautics and Space Administration (NASA)
Duration: 4 minutes
Release Date: Dec. 5, 2022


#NASA #ESA #Space #Earth #Earthrise #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #JourneyToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #STEM #Education #HD #Video

Orion's Home Journey: Updates | NASA's Artemis I Moon Mission

Orion's Home Journey: Updates | NASA's Artemis I Moon Mission

Artemis All Access – Episode 5: Artemis All Access is your look at the latest in Artemis I, the people and technology behind the mission, and what is coming up next. Orion is expected to splashdown off the coast of San Diego, California, at 12:40 p.m. EST (17:30 UTC) on Sunday, Dec. 11, 2022.

This uncrewed flight test around the Moon will pave the way for a crewed flight test and future human lunar exploration as part of Artemis.  

Learn more about the mission and track the Orion spacecraft’s current position at www.nasa.gov/trackartemis/ 

Live coverage of major events will air on NASA Television, the NASA app, and the agency’s website at: www.nasa.gov/live 


Credit: NASA's Johnson Space Center (JSC)

Duration: 6 minutes

Release Date: Dec. 7, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #JourneyToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #STEM #Education

Expedition 68 Crew Photos: Dec. 2022 | International Space Station

Expedition 68 Crew Photos: Dec. 2022 | International Space Station

Expedition 68 EVA 82: NASA astronaut and Expedition 68 Flight Engineer Josh Cassada holds a roll-out solar array
NASA astronaut & Expedition 68 Flight Engineer Frank Rubio
Roscosmos cosmonaut and Expedition 68 Flight Engineer Anna Kikina services electronics hardware 
Flight Engineers Nicole Mann of NASA and Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA)
NASA astronaut and Expedition 68 Flight Engineer Josh Cassada
Roscosmos cosmonauts (from left) Sergey Prokopyev & Dmitri Petelin service components inside an Orlan spacesuit
Flight Engineers Nicole Mann (center left) of NASA and Koichi Wakata (center right) of the Japan Aerospace Exploration Agency (JAXA) pose with NASA spacewalkers Frank Rubio (far left) and Josh Cassada (far right)
A set of four CubeSats are photographed after being released from a small satellite deployer on the outside of the Kibo laboratory module as the International Space Station orbited 264 miles above Namibia on the African continent

Expedition 68 Crew
Station Commander Sergey Prokopyev of Roscosmos (Russia)
Roscosmos (Russia): Flight Engineers Anna Kikina & Dmitri Petelin
NASA: Flight Engineers Nicole Mann, Frank Rubio & Josh Cassada
JAXA (Japan): Flight Engineer Koichi Wakata

An international partnership of space agencies provides and operates the elements of the  International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada. The ISS has been the most politically complex space exploration program ever undertaken.

Credit: NASA's Johnson Space Center (JSC)
Image Dates: Dec. 2-5, 2022

#NASA #Space #Earth #ISS #Astronauts #EVA #NicoleMann #FrankRubio #JoshCassada #KoichiWakata #JAXA #Japan #日本 #Cosmonauts #SergeyProkopyev #AnnaKikina #DmitriPetelin #Roscosmos #Роскосмос #Russia #Россия #Science #HumanSpaceflight #Robotics #Expedition68 #JSC #UnitedStates #Canada #CSA #International #Research #Laboratory #STEM #Education

Hawaii's Mauna Loa Volcano Erupts | Earth Science from Orbit | NOAA

Hawaii's Mauna Loa Volcano Erupts | Earth Science from Orbit | NOAA

On Nov. 28, 2022, the world’s largest active volcano began erupting for the first time since 1984. Mauna Loa, located on Hawaii’s Big Island, began spewing ash and debris from its summit around 11:30 p.m. local time after a series of earthquakes. Lava was ejected to heights of up to 148 feet on Nov. 29. 

NOAA satellites monitored the ongoing eruption, lava flow, ash plume, and sulfur dioxide (SO2) emissions. GOES-17 (GOES West) provided one-minute imagery to help NOAA’sNational Weather Service Pacific Region monitor the evolution of the eruption and volcanic plumes in real-time. GOES-18, still undergoing post-launch testing, began collecting 30-second imagery of the eruption on Nov. 30. This rapid-update imagery allowed forecasters to observe the hottest areas of the lava field as well as the constant emission of ash and vapor.


Credit: National Oceanic and Atmospheric Administration (NOAA)

Duration: 2 minutes

Release Date: Dec. 6, 2022


#NASA #NOAA #Earth #Science #Planet #Atmosphere #Satellite #Hawaii #BigIsland #MaunaLoa #Volcano #Eruption #Weather #Meteorology #GOES17 #GOES18 #EarthObservation #RemoteSensing #LockheedMartin #UnitedStates #STEM #Education #HD #Video

The "Peekaboo" Dwarf Galaxy HIPASS J1131–31 | Hubble Space Telescope

The "Peekaboo" Dwarf Galaxy HIPASS J1131–31 | Hubble Space Telescope


Image Description: A large bright star is centered, with four long rays extending in an X shape. A small, peanut-shaped blue galaxy appears just to the star's right, between its right-hand rays. The galaxy is speckled with bright spots. The image background is scattered with a few smaller versions of the large central star, and even smaller orange galaxies of various shapes.

Distance: about 22 million light-years

Like someone living apart from modern conveniences, a dwarf galaxy in the local universe looks like it belongs in another time—the early eras of galaxy evolution itself. NASA's Hubble Space Telescope has helped confirm an example of what astronomers call an "extremely metal-poor" galaxy, which has very few of the chemical elements or "metals" that stars produce and enrich their galaxies with over time. Most intriguingly, its stars indicate that it is also one of the youngest galaxies ever detected in the local universe. 

Despite the galaxy being nearly hidden behind the glare of a foreground star—leading to its nickname, Peekaboo—Hubble was able to pick out individual stars for analysis. The discovery provides the tantalizing opportunity to study a relic of the past in fine detail, like shaking hands with an ancient ancestor. 

A large bright star is centered, with four long rays extending in an X shape. Between the rays on the right is a small blue peanut-shaped galaxy with some bright spots. Smaller similar stars and orange background galaxies fill image.

Peeking out from behind the glare of a bright foreground star, astronomers have uncovered the most extraordinary example yet of a nearby galaxy with characteristics that are more like galaxies in the distant, early universe. Only 1,200 light-years across, the tiny galaxy HIPASS J1131–31 has been nicknamed "Peekaboo" because of its emergence in the past 50-100 years from behind the fast-moving star that was obscuring astronomers' ability to detect it.

The discovery is a combined effort of telescopes on the ground and in space, including confirmation by NASA's Hubble Space Telescope. Together the research shows tantalizing evidence that the Peekaboo Galaxy is the nearest example of the galaxy formation processes that commonly took place not long after the big bang, 13.8 billion years ago. 

"Uncovering the Peekaboo Galaxy is like discovering a direct window into the past, allowing us to study its extreme environment and stars at a level of detail that is inaccessible in the distant, early universe," said astronomer Gagandeep Anand of the Space Telescope Science Institute in Baltimore, Maryland, co-author of the new study on Peekaboo's intriguing properties.

Astronomers describe galaxies like Peekaboo as "extremely metal-poor" (XMP). In astronomy, "metals" refers to all elements heavier than hydrogen and helium. The very early universe was almost entirely made up of primordial hydrogen and helium, elements forged in the big bang. Heavier elements were forged by stars over the course of cosmic history, building up to the generally metal-rich universe humans find ourselves in today. Life as we know it is made from heavier element "building blocks" like carbon, oxygen, iron, and calcium.

While the universe's earliest galaxies were XMP by default, similarly metal-poor galaxies have also been found in the local universe. Peekaboo caught astronomers' attention because, not only is it an XMP galaxy without a substantial older stellar population, but at only 20 million light-years from Earth it is located at least half the distance of the previously known young XMP galaxies. 

Peekaboo was first detected as a region of cold hydrogen more than 20 years ago with the Australian Parkes radio telescope Murriyang, in the HI Parkes All Sky Survey by professor Bärbel Koribalski, who is an astronomer at Australia's national science agency CSIRO and a co-author of the latest research study on Peekaboo's metallicity. Far-ultraviolet observations by NASA's space-based Galaxy Evolution Explorer (GALEX) mission showed it to be a compact blue dwarf galaxy.

"At first we did not realize how special this little galaxy is," Koribalski said of Peekaboo. "Now with combined data from the Hubble Space Telescope, the Southern African Large Telescope (SALT), and others, we know that the Peekaboo Galaxy is one of the most metal-poor galaxies ever detected."

NASA's Hubble Space Telescope was able to resolve about 60 stars in the tiny galaxy, almost all of which appear to be a few billion years old or younger. Measurements of Peekaboo's metallicity by SALT completed the picture. Together, these findings underline the major difference between Peekaboo and other galaxies in the local universe, which typically have ancient stars that are many billions of years old. Peekaboo's stars indicate that it is one of the youngest and least-chemically-enriched galaxies ever detected in the local universe. This is very unusual, as the local universe has had about 13 billion years of cosmic history to develop.

However, the picture is still a shallow one, Anand says, as the Hubble observations were made as part of a "snapshot" survey program called The Every Known Nearby Galaxy Surveyan effort to get Hubble data of as many neighboring galaxies as possible. The research team plans to use Hubble and the James Webb Space Telescope to do further research on Peekaboo, to learn more about its stellar populations and their metal-makeup. 

"Due to Peekaboo's proximity to us, we can conduct detailed observations, opening up possibilities of seeing an environment resembling the early universe in unprecedented detail," Anand said. 

The results are accepted for publication in the Monthly Notices of the Royal Astronomical Society.  

The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency (ESA). NASA's Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore conducts Hubble science operations. STScI is operated for NASA by the Association of Universities for Research in Astronomy, in Washington, D.C.


Credits: NASA, European Space Agency (ESA), STScI

Release Date: Dec. 6, 2022 


#NASA #ESA #Astronomy #Hubble #Space #Science #Star #TYC72151991 #Galaxy #DwarfGalaxy #HIPASSJ113131 #PeekabooGalaxy #XMPGalaxy #Hydra #Constellation #MilkyWayGalaxy #Cosmos #Universe #SpaceTelescope #GSFC #STScI #UnitedStates #Europe #STEM #Education

Tuesday, December 06, 2022

NASA Unfurls Largest Solar Cruiser Sail Quadrant Ever Deployed

NASA Unfurls Largest Solar Cruiser Sail Quadrant Ever Deployed

Solar Cruiser is a NASA mission launching in 2025 to test a large solar sail at an artificial orbit between the Earth and Sun.

Solar sails use the gentle push of sunlight for propulsion, giving them unlimited fuel to reach unique orbits and perhaps one day visit other stars.

Solar Cruiser’s sail will be the largest ever tested in space, covering an area of more than six tennis courts.

NASA and industry partners used two 100-foot lightweight composite booms to stretch out a 4,300-square-foot (400-square-meter) prototype solar sail quadrant for the first time in Building 4316 at NASA’s Marshall Space Flight Center in Huntsville, Alabama, on Oct. 13, 2022. Solar sails use the force of light—not rocket fuel—to fly in deep space. They get a gentle, constant push from sunlight particles, or photons, hitting their giant reflective surfaces. The fully deployed sail the covers an area larger than the surface of a tennis court with an aluminum-coated plastic material that’s thinner than a human hair. The full-scale prototype is only a quarter of the sail designed to fly the Solar Cruiser spacecraft towards the Sun and demonstrate orbits that would be difficult or impossible for conventional satellites to maintain.


Credit: NASA's Marshall Space Flight Center

Duration: 5 minutes

Release Date: Dec. 6, 2022


#NASA #ESA #Space #SolarCruiser #SolarSail #Sun #Earth #Asteroids #SolarSystem #Exploration #Artemis #Rideshare #DeepSpace #Science #Engineering #Technology #Exploration #HumanSpaceflight  #MSFC #UnitedStates #STEM #Education #HD #Video

Training for a New Moon Mission | NASA Johnson

Training for a New Moon Mission | NASA Johnson

While designers and engineers develop new spacecraft, astronauts who will fly the missions and the specialists who support their spaceflights get themselves ready the old fashioned way: practice, practice, practice. NASA teams have used simulations to prepare for every human spaceflight America has ever flown; take a closer look at today’s Mission Control Houston training team as they prepare for the Artemis flights that will return Americans to the surface of the Moon.


Credit: NASA's Johnson Space Center (JSC)

Duration: 2 minutes, 31 seconds

Release Date: Dec. 6, 2022


#NASA #ESA #Space #Earth #Moon #Artemis #ArtemisI #Orion #Spacecraft #DeepSpace #MoonToMars #JourneyToMars #Science #Engineering #Technology #Exploration #HumanSpaceflight #SolarSystem #UnitedStates #Europe #International #STEM #Education