Friday, August 16, 2024

Cerro Tololo captura deslumbrante cúmulo galáctico en Chile

Cerro Tololo captura deslumbrante cúmulo galáctico en Chile

Cosmoview Episodio 85: La cámara de Energía Oscura captura una imagen del deslumbrante Cúmulo de Coma, llamado así por el cabello de la Reina Berenice II de Egipto. Este conjunto de galaxias no sólo es significativo en la mitología griega, sino que también fue fundamental para el descubrimiento de la materia oscura. La teoría surgió en 1937, cuando el astrónomo Fritz Zwicky observó que las galaxias del Cúmulo de Coma se comportaban como si estuvieran bajo la influencia de grandes cantidades de materia “oscura” inobservable.


Credit:

Images and Videos: CTIO/NOIRLab/DOE/NSF/AURA/T. Slovinský/S. Hall/A. Cuerden/N. Bartmann

Image Processing: D. de Martin & M. Zamani (NSF NOIRLab)

Duration: 1 minute, 26 seconds

Release Date: Aug. 14, 2024


#NASA #Astronomy #Space #Science #NASAenespañol #español #Galaxies #GalaxyClusters #ComaCluster #ACO1656 #DarkMatter #Astrophysics #ComaBerenices #Constellation #Universe #VictorBlancoTelescope #KPNO #NOIRLab #NSF #AURA #KittPeak #Arizona #UnitedStates #Europe #STEM #Education #HD #Video

The Coma Galaxy Cluster: Queen Berenice II’s Hair Tied Together by Dark Matter

The Coma Galaxy Cluster: Queen Berenice II’s Hair Tied Together by Dark Matter

Cosmoview Episode 85: The Dark Energy Camera captures an image of the dazzling Coma Cluster, named after the hair of Queen Berenice II of Egypt. Not only significant in Greek mythology, this collection of galaxies was also fundamental to the discovery of the existence of dark matter. The theory emerged in 1937 when Swiss astronomer Fritz Zwicky noticed that the Coma Cluster galaxies behaved as if they were under the influence of vast amounts of unobservable ‘dark’ matter.

Distance: 320 million light years


Credit:

Images and Videos: CTIO/NOIRLab/DOE/NSF/AURA/T. Slovinský/S. Hall/A. Cuerden/N. Bartmann

Image Processing: D. de Martin & M. Zamani (NSF NOIRLab)

Duration: 1 minute, 26 seconds

Release Date: Aug. 15, 2024


#NASA #Astronomy #Space #Science #Galaxies #GalaxyClusters #ComaCluster #ACO1656 #DarkMatter #Astrophysics #ComaBerenices #Constellation #Cosmos #Universe #VictorBlancoTelescope #KPNO #NOIRLab #NSF #AURA #KittPeak #Arizona #UnitedStates #Europe #STEM #Education #HD #Video

Zooming into The Coma Cluster | NOIRLab-DOE Dark Energy Camera

Zooming into The Coma Cluster | NOIRLab-DOE Dark Energy Camera


The Dark Energy Camera captured an image of the dazzling Coma Cluster, named after the hair of Queen Berenice II of Egypt. Not only significant in Greek mythology, this collection of galaxies was also fundamental to the discovery of the existence of dark matter. The theory emerged in 1937 when Swiss astronomer Fritz Zwicky noticed that the Coma Cluster galaxies behaved as if they were under the influence of vast amounts of unobservable ‘dark’ matter.

Distance: 320 million light years


Video Credit: CTIO/NOIRLab/DOE/NSF/AURA/N. Bartmann

Image Processing: D. de Martin & M. Zamani (NSF NOIRLab)

Duration: 1 minute
Release Date: Aug. 15, 2024


#NASA #Astronomy #Space #Science #Galaxies #GalaxyClusters #ComaCluster #ACO1656 #DarkMatter #Astrophysics #ComaBerenices #Constellation #Cosmos #Universe #VictorBlancoTelescope #KPNO #NOIRLab #NSF #AURA #KittPeak #Arizona #UnitedStates #Europe #STEM #Education #HD #Video

Pan on The Coma Cluster: Distance 320 million light years | Dark Energy Camera

Pan on The Coma Cluster: Distance 320 million light years | Dark Energy Camera

The Dark Energy Camera captured an image of the dazzling Coma Cluster, named after the hair of Queen Berenice II of Egypt. Not only significant in Greek mythology, this collection of galaxies was also fundamental to the discovery of the existence of dark matter. The theory emerged in 1937 when Swiss astronomer Fritz Zwicky noticed that the Coma Cluster galaxies behaved as if they were under the influence of vast amounts of unobservable ‘dark’ matter.


Credit: CTIO/NOIRLab/DOE/NSF/AURA/N. Bartmann

Image Processing: D. de Martin & M. Zamani (NSF NOIRLab)

Duration: 30 seconds
Release Date: Aug. 15, 2024


#NASA #Astronomy #Space #Science #Galaxies #GalaxyClusters #ComaCluster #ACO1656 #DarkMatter #Astrophysics #ComaBerenices #Constellation #Cosmos #Universe #VictorBlancoTelescope #KPNO #NOIRLab #NSF #AURA #KittPeak #Arizona #UnitedStates #Europe #STEM #Education #HD #Video

Coma Cluster: Held Together by Dark Matter | Victor Blanco Telescope

Coma Cluster: Held Together by Dark Matter | Victor Blanco Telescope

The Dark Energy Camera captures an image of the dazzling Coma Cluster, named after the hair of Queen Berenice II of Egypt. Not only significant in Greek mythology, this collection of galaxies was also fundamental to the discovery of the existence of dark matter. The theory emerged in 1937 when Swiss astronomer Fritz Zwicky noticed that the Coma Cluster galaxies behaved as if they were under the influence of vast amounts of unobservable ‘dark’ matter.

The Dark Energy Camera on the Victor Blanco Telescope has probed the Coma Cluster—a rich cluster of galaxies named for the hair of an ancient queen and an inspiration for the theory of dark matter. This densely populated image showcases an enormous cluster not of individual stars, but of entire galaxies, known as the Coma Cluster. The Coma Cluster is named for the constellation where it lies, Coma Berenices. It is the only one of the 88 IAU constellations to be named after a historical figure. Its namesake is Queen Berenice II of Egypt, or more precisely her hair, with ‘coma’ meaning ‘hair of the head’ in Latin.

Distance: 320 million light years

Berenice famously cut her hair off and presented it as a votive offering to the gods when her husband returned safely from war. The hair was placed in a temple, but went missing soon after. The court astronomer, Conon of Samos, claimed to identify Berenice’s lost tresses in a rather unlikely spot—the night sky—suggesting that the goddess Aphrodites had catasterized (literally turned into a constellation) the queen’s locks. This all took place around 245 BCE, meaning that Berenice’s hair has enjoyed celestial recognition for an extraordinarily long time.

The data used to build this detailed picture were collected by the Department of Energy-fabricated Dark Energy Camera (DECam). It is mounted on the U.S. National Science Foundation Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, a Program of the National Science Foundation's NOIRLab. The 570-megapixel camera was built to carry out the Dark Energy Survey (DES)—an amazing 758-night run of observations between 2013 and 2019. DES was conducted with the intention to better understand the nature of dark energy—the unknown entity that is causing the expansion of our Universe to accelerate.

The Coma Cluster is closely associated with dark energy’s equally mysterious counterpart: dark matter. Nearly a century ago, in 1937, Swiss astronomer Fritz Zwicky observed several galaxies within the Coma Cluster. He calculated an approximation of the cluster’s mass based on its luminous—in other words, observable—structures.  However, he encountered something strange. The cluster seemed to be missing mass. In fact, the galaxies within the cluster were behaving as though the cluster contained 400 times more mass than his estimates suggested.

Zwicky reached this conclusion by observing how fast the galaxies within the cluster were moving. To explain this further, it is helpful to briefly revisit a key point about the nature of gravity. Gravity is one of the four known fundamental interactions that exist between all entities with energy or mass. The more mass that an object has, the stronger the gravitational pull it will exert. Therefore, less massive objects that are within a certain distance to a more massive object will be pulled uncontrollably towards it.

However, there is an additional factor to consider: velocity. If an object is moving fast enough, it can escape the gravitational pull of other objects. It is this principle that enabled Zwicky to infer that the Coma Cluster appeared to be ‘missing’ matter. He found that the galaxies were moving so fast that they should be escaping the cluster if it were being held together only by the observable mass. This led him to postulate that the cluster must be held together by vast amounts of unobservable ‘dark’ matter, although this suggestion seemed far-fetched to much of the astronomical community.

It took until the 1980s for the majority of astronomers to be convinced of the existence of dark matter. The consensus moved as several studies came out reporting the same curious mass inconsistency that Zwicky observed, but on the scale of single galaxies rather than entire galaxy clusters. One such study was done in 1970 by U.S. astronomers Kent Ford and Vera C. Rubin, who found evidence of invisible matter in the Andromeda Galaxy. And in 1979, astronomers Sandra Faber and John Gallagher performed a robust analysis of the mass-to-light ratio for over 50 spiral and elliptical galaxies. This led them to conclude that, “the case for invisible mass in the Universe is very strong and getting stronger.”

The existence of dark matter and dark energy is now widely accepted, and understanding their elusive nature is a main focus of modern astrophysics. A deeper understanding may be on the horizon with the upcoming 10-year Legacy Survey of Space and Time. It will be conducted by NSF–Department of Energy Vera C. Rubin Observatory, named after the inspirational female astronomer that helped show the world that there is so much more to the Universe than meets the eye.


Image Credit: CTIO/NOIRLab/DOE/NSF/AURA

Image Processing: D. de Martin & M. Zamani (NSF NOIRLab)

Release Date: Aug. 14, 2024


#NASA #Astronomy #Space #Science #Galaxies #GalaxyClusters #ComaCluster #ACO1656 #DarkMatter #Astrophysics #ComaBerenices #Constellation #Cosmos #Universe #VictorBlancoTelescope #KPNO #NOIRLab #NSF #AURA #KittPeak #Arizona #UnitedStates #Europe #STEM #Education

NASA's Space to Ground: A Greener Space | Week of Aug. 16, 2024

NASA's Space to Ground: A Greener Space | Week of Aug. 16, 2024

NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. A Russian cargo craft is orbiting Earth packed with nearly three tons of cargo to resupply the International Space Station. 

The Roscosmos Progress 89 space freighter launched at 11:20 p.m. EDT on Wednesday from the Baikonur Cosmodrome in Kazakhstan beginning a two-day space delivery to the orbital outpost. Cosmonauts Oleg Kononenko and Nikolai Chub will be on duty monitoring Progress when it completes its automated approach and docking 1:56 a.m. on Saturday. Progress will remain docked to the aft port of the Zvezda service module for six months of cargo operations.

Expedition 71 Updates:

https://blogs.nasa.gov/spacestation/

Expedition 71 Crew
Station Commander: Oleg Kononenko (Russia)
Roscosmos (Russia): Nikolai Chub, Alexander Grebenkin (Russia)
NASA: Tracy Dyson, Matthew Dominick, Mike Barrett, Jeanette Epps
NASA’s Boeing Crew Flight Test astronauts Suni Williams and Butch Wilmore

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

Science, Technology, Engineering, Math (STEM)


Video Credit: NASA's Johnson Space Center (JSC)

Duration: 4 minutes, 17 seconds

Release Date: Aug. 16, 2024

#NASA #Space #ISS #Science #Earth #CargoSpacecraft #Союз #Progress89Mission #ProgressMS28Spacecraft #Astronauts #UnitedStates #SpaceLaboratory #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #InternationalCooperation #Expedition71 #STEM #Education #HD #Video

Thursday, August 15, 2024

Pacific Ocean by Moonlight | International Space Station

Pacific Ocean by Moonlight | International Space Station

The Moon's glint beams off the Pacific Ocean as stars glitter in the background above the Earth's airglow. The Moon is obscured behind a solar array in this photograph from the International Space Station as it orbited 264 miles above.

Expedition 71 Updates:

https://blogs.nasa.gov/spacestation/

Expedition 71 Crew
Station Commander: Oleg Kononenko (Russia)
Roscosmos (Russia): Nikolai Chub, Alexander Grebenkin (Russia)
NASA: Tracy Dyson, Matthew Dominick, Mike Barrett, Jeanette Epps
NASA’s Boeing Crew Flight Test astronauts Suni Williams and Butch Wilmore

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

Science, Technology, Engineering, Math (STEM)


Image Credit: NASA's Johnson Space Center (JSC)

Image Date: July 18, 2024 


#NASA #Space #ISS #Science #Stars #Moon #Earth #Airglow #PacificOcean #MoonGlint #SolarArrays #Astronauts #AstronautPhotography #UnitedStates #SpaceLaboratory #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #InternationalCooperation #Expedition71 #STEM #Education

The Eyes Galaxies: NGC 4438 & 4435 | NASA's Chandra X-ray Observatory

The Eyes Galaxies: NGC 4438 & 4435 | NASA's Chandra X-ray Observatory

This composite image features a pair of merging galaxies, each resembling a brilliant white dot, earning the pair the nickname ‘The Eyes’. Near our lower left is the galaxy NGC 4438. This bright white dot is surrounded by a neon purple cloud of hot gas seen with Chandra. An inky black cloud nestled in a vertical strip of haze partially blocks our view of the neon purple, superheated gas. At our upper right is the second galaxy, NGC 4435. This bright white dot is surrounded by a thin, neon purple ring. The galaxy sits in the center of a glowing white streak, at the heart of a misty white pool. Flecks of white and neon purple speckle the image, set against the blackness of space.

This system contains a pair of merging galaxies in the Virgo Cluster and the multimillion-degree gas emits X-rays detected by NASA's Chandra x-ray observatory. In this image, x-rays from Chandra (purple) and optical light from the European Southern Observatory (red, green, blue) are visible.


Credit: X-ray: NASA/CXC/SAO; Optical: ESO

Image Processing: NASA/CXC/SAO/J. Major

Image Date: Aug. 15, 2024


#NASA #ESO #Astronomy #Space #Science #Galaxies #EyesGalaxies #InteractingGalaxies #NGC4438 #NGC4435 #VirgoCluster #Constellation #Virgo #Cosmos #Universe #NASAChandra #ChandraObservatory #Xray #SpaceTelescope #UnitedStates #STEM #Education

Aurora over Indian Ocean | International Space Station

Aurora over Indian Ocean | International Space Station


An aurora radiates brightly above the Indian Ocean in this photograph from the International Space Station as it soared 270 miles above the Earth's surface and about 1,280 miles southwest of Perth, Australia. In the foreground, is the Soyuz MS-25 crew ship docked to the Prichal docking module. It is itself attached to the Nauka science module. The European robotic arm is also connected to Nauka.

Expedition 71 Updates:

https://blogs.nasa.gov/spacestation/

Expedition 71 Crew
Station Commander: Oleg Kononenko (Russia)
Roscosmos (Russia): Nikolai Chub, Alexander Grebenkin (Russia)
NASA: Tracy Dyson, Matthew Dominick, Mike Barrett, Jeanette Epps
NASA’s Boeing Crew Flight Test astronauts Suni Williams and Butch Wilmore

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

Science, Technology, Engineering, Math (STEM)


Image Credit: NASA's Johnson Space Center (JSC)

Release Date: Aug. 11, 2024


#NASA #Space #ISS #Science #Sun #Earth #IndianOcean #Aurora #SoyuzCrewSpacecraft #Astronauts #AstronautPhotography #UnitedStates #SpaceLaboratory #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #InternationalCooperation #Expedition71 #STEM #Education

A Look Back at Storm Debby | NOAA

A Look Back at Storm Debby | NOAA

Throughout last week, National Oceanic and Atmospheric Administration (NOAA) satellites monitored Debby, a storm that struck Florida’s Big Bend region near Steinhatchee before moving up the East Coast where it brought widespread flooding and damaging winds that reached as far north as New York state along with a few destructive tornadoes along the way. 


Video Credits: NOAA, NASA, Cooperative Institute for Research in the Atmosphere (CIRA)

Duration: 2 minutes

Release Date: Aug. 15, 2024

#NASA #NOAA #Space #Science #Satellites #GOESEast #GOES16 #JPSS #Earth #Planet #Atmosphere #Florida #UnitedStates #Canada #NorthAmerica #GulfOfMexico #AtlanticOcean #Hurricanes #Storms #HurricaneDebby #Weather #Meteorology #RemoteSensing #EarthObservation #STEM #Education #HD #Video

Russian Soyuz Progress Cargo Spacecraft Launches to International Space Station

Russian Soyuz Progress Cargo Spacecraft Launches to International Space Station

An unpiloted Russian Progress 89 cargo craft launched to the International Space Station on a Soyuz rocket from the Baikonur Cosmodrome in Kazakhstan at 11:20 p.m. EDT Wednesday, Aug. 14, 2024. After a two-day in-orbit journey to the station, the spacecraft will automatically dock to the aft port of the orbiting laboratory’s Zvezda Service module at 1:56 a.m., Saturday, Aug. 17.

This spacecraft will deliver about three tons of food, fuel, and supplies to the International Space Station.

Expedition 71 Updates:

https://blogs.nasa.gov/spacestation/

Expedition 71 Crew
Station Commander: Oleg Kononenko (Russia)
Roscosmos (Russia): Nikolai Chub, Alexander Grebenkin (Russia)
NASA: Tracy Dyson, Matthew Dominick, Mike Barrett, Jeanette Epps
NASA’s Boeing Crew Flight Test astronauts Suni Williams and Butch Wilmore

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

Science, Technology, Engineering, Math (STEM)


Video Credit: Credit: NASA TV

Duration: 1 minute, 45 seconds

Release Date: Aug. 14, 2024


#NASA #Space #ISS #Science #Roscosmos #Роскосмос #CargoSpacecraft #SoyuzRocketLaunch #Союз #Progress89Mission #ProgressMS28Spacecraft #Cosmonauts #Astronauts #HumanSpaceflight #UnitedStates #Russia #Россия #Europe #Japan #Expedition70 #SpaceLaboratory #BaikonurCosmodrome #Kazakhstan #STEM #Education #HD #Video

The Light, Dark & Dusty Trifid Nebula

The Light, Dark & Dusty Trifid Nebula

Messier 20, popularly known as the Trifid Nebula, lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid illustrates three types of astronomical nebulae; red emission nebulae dominated by light from hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhouette. The reddish emission region, roughly separated into three parts by obscuring dust lanes, is what lends the Trifid its popular name. 

This cosmic cloud complex is over 40 light-years across and would cover the area of a full moon on planet Earth's sky. However, the Trifid Nebula is too faint to be seen by the unaided eye. Over 75 hours of image data captured under dark night skies was used to create this stunning telescopic view.


Image Credit & Copyright: Robert Edelmaier and Gabriele Gegenbauer

Website: https://www.astropicture.at

Release Date: Aug. 10, 2024


#NASA #Astronomy #Space #Science #Nebula #TrifidNebula #Messier20 #M20 #NGC6514 #EmissionNebulae #ReflectionNebulae #DarkNebulae #Sagittarius #Constellation #MilkyWayGalaxy #Universe #Telescope #Astrophotography #RobertEdelmaier #GabrieleGegenbauer #Astrophotographers #STEM #Education #APoD

NASA's "Espacio a Tierra" | Entrega: 9 de agosto 2024

NASA's "Espacio a Tierra" | Entrega: 9 de agosto 2024

Espacio a Tierra, la versión en español de las cápsulas Space to Ground de la NASA, te informa semanalmente de lo que está sucediendo en la Estación Espacial Internacional.

Aprende más sobre la ciencia a bordo de la estación espacial: https://www.nasa.gov/international-space-station/space-station-research-and-technology/ciencia-en-la-estacion/

Para obtener más información sobre la ciencia de la NASA, suscríbete al boletín semanal: 

https://www.nasa.gov/suscribete

Ciencia de la NASA: https://ciencia.nasa.gov


Video Credit: NASA's Johnson Space Center (JSC)

Duration: 3 minutes, 44 seconds

Release Date: Aug. 14, 2024


#NASA #Space #ISS #Science #NASAenespañol #español #NorthropGrumman #SSDickScobee #CygnusCargoSpacecraft #SpaceLaboratory #SpaceTechnology #Astronauts #UnitedStates #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #InternationalCooperation #Expedition71 #STEM #Education #HD #Video

Wednesday, August 14, 2024

Light Trails | International Space Station

Light Trails | International Space Station

This long-duration photograph of the Russian Soyuz MS-25 spacecraft with light trails on Earth below and stars trails above the horizon was taken by NASA astronaut Matthew Dominick as the International Space Station soared 262 miles above a sparsely populated region of Queensland, Australia.

Expedition 71 Updates:

https://blogs.nasa.gov/spacestation/

Expedition 71 Crew
Station Commander: Oleg Kononenko (Russia)
Roscosmos (Russia): Nikolai Chub, Alexander Grebenkin (Russia)
NASA: Tracy Dyson, Matthew Dominick, Mike Barrett, Jeanette Epps
NASA’s Boeing Crew Flight Test astronauts Suni Williams and Butch Wilmore

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

Science, Technology, Engineering, Math (STEM)


Image Credit: NASA's Johnson Space Center (JSC)

Image Date: Aug. 3, 2024


#NASA #Space #ISS #Science #Stars #Earth #SoyuzCrewSpacecraft #Astronaut #MatthewDominick #AstronautPhotography #Timelapse #UnitedStates #SpaceLaboratory #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #InternationalCooperation #Expedition71 #STEM #Education

NASA Telescopes Reveal Black Hole's Snacking Schedule

NASA Telescopes Reveal Black Hole's Snacking Schedule

Astronomers have correctly forecast when a giant black hole finished its last meal—and predicted when its next snack will occur. By using new data from NASA’s Chandra X-ray Observatory and Neil Gehrels Swift Observatory as well as the European Space Agency’s XMM-Newton, a team of researchers have made important headway in understanding how—and when—this supermassive black hole consumes material.

This result is based on studies of a supermassive black hole—with about 50 million times more mass than the sun—in the center of a galaxy located about 860 million light-years from Earth.

In 2018, the optical ground-based survey ASAS-SN noticed this system had become much brighter. After observing it with NASA’s NICER and Chandra, and XMM-Newton, researchers determined that the surge in brightness came from a “tidal disruption event,” or TDE, which signals that a star was completely torn apart and partially ingested after flying too close to a black hole. They called it AT2018fyk.

When material from the destroyed star approached close to the black hole, it got hotter and produced X-ray and ultraviolet, or UV, light. These signals then faded, agreeing with the idea that nothing was left of the star for the black hole to digest.

However, about two years later, the X-ray and UV light from the galaxy became much brighter again. This meant, according to astronomers, that the star likely survived the initial gravitational grab by the black hole and then entered a highly elliptical orbit with the black hole. During its second close approach to the black hole, additional material was pulled off and produced more X-ray and UV light.

Initially the researchers thought this was a garden-variety case of a black hole totally ripping a star apart. However, the star appears to be living to die another day.

Based on what they had learned about the star and its orbit, a team of astronomers predicted that the black hole’s second meal would end in August 2023 and applied for Chandra observing time to check. Chandra observations on August 14, 2023, indeed showed the telltale sign of the black hole feeding coming to an end with a sudden drop in X-rays. The researchers also obtained a better estimate of how long it takes the star to complete an orbit, and predicted future mealtimes for the black hole.

They think this process will repeat each time the star returns to its point of closest approach, approximately every 3.5 years, until the star is completely gone.


Video Credit: Chandra X-ray Observatory/NASA's Marshall Space Flight Center (MSFC)

Duration: 2 minutes, 55 seconds 

Release Date: Aug. 14, 2024


#NASA #ESA #Space #Astronomy #Science #Galaxies #Stars #BlackHoles #BlackHole #AT2018fyk #Grus #Constellation #Cosmos #Universe #NASAChandra #ChandraObservatory #SwiftObservatory #XMMNewton #SpaceTelescopes #Xray #MSFC #UnitedStates #STEM #Education #Art #Animation #HD #Video

Artemis II Crew Launch Emergency Egress Demonstration | NASA Kennedy

Artemis II Crew Launch Emergency Egress Demonstration | NASA Kennedy








Teams at NASA’s Kennedy Space Center in Florida practice the Artemis mission emergency escape or egress procedures during a series of integrated system verification and validation tests at Launch Complex 39B on Friday, Aug. 9, 2024. Simulated flight crew members practice getting out of the emergency egress basket and into the emergency transport vehicle to drive them to safety in the event of an unlikely emergency during launch countdown.

The Artemis II test flight will be NASA’s first mission with crew, sending NASA astronauts Victor Glover, Christina Koch, and Reid Wiseman, as well as Canadian Space Agency (CSA) astronaut Jeremy Hansen, on a 10-day journey around the Moon and back.

Check the NASA Artemis II Mission page for updates:

https://www.nasa.gov/mission/artemis-ii/

For more information about the Space Launch System (SLS), visit: 

https://www.nasa.gov/sls


Image Credit: NASA/Kim Shiflett

Capture Date: Aug. 9, 2024


#NASA #ESA #CSA #Space #Moon #ArtemisProgram #ArtemisIIMission #ArtemisII #SLS #DeepSpace #Astronauts #EmergencyTraining #Egress #MoonToMars #Science #SpaceExploration #HumanSpaceflight #NASAKennedy #LaunchComplex39B #Spaceport #Florida #UnitedStates #Canada #Europe #STEM #Education