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Rho Ophiuchi Cloud Complex | James Webb Space Telescope
This first anniversary image from the NASA/European Space Agency/Canadian Space Agency James Webb Space Telescope displays star birth like it has never been seen before, full of detailed, impressionistic texture. The subject is the Rho Ophiuchi cloud complex, the closest star-forming region to Earth. It is a relatively small, quiet stellar nursery, but you would never know it from Webb’s chaotic close-up. Jets bursting from young stars crisscross the image, impacting the surrounding interstellar gas and lighting up molecular hydrogen, shown in red. Some stars display the telltale shadow of a circumstellar disc, the makings of future planetary systems.
The young stars at the center of many of these discs are similar in mass to the Sun or smaller. The heftiest in this image is the star S1, which appears amid a glowing cave it is carving out with its stellar winds in the lower half of the image. The lighter-colored gas surrounding S1 consists of polycyclic aromatic hydrocarbons, a family of carbon-based molecules that are among the most common compounds found in space.
Image Description: Red dual opposing jets coming from young stars fill the darker top half of the image, while a glowing pale-yellow, cave-like structure is bottom center, tilted toward two o’clock, with a bright star at its center. The dust of the cave structure becomes wispy toward eight o’clock. Above the arched top of the dust cave three groupings of stars with diffraction spikes are arranged. A dark cloud sits at the top of the arch of the glowing dust cave, with one streamer curling down the right-hand side. The dark shadow of the cloud appears pinched in the center, with light emerging in a triangle shape above and below the pinch, revealing the presence of a star inside the dark cloud. The image’s largest jets of red material emanate from within this dark cloud, thick and displaying structure like the rough face of a cliff, glowing brighter at the edges. At the top center of the image, a star displays another, larger pinched dark shadow, this time vertically. To the left of this star is a more wispy, indistinct region.
Webb is an international partnership between NASA, the European Space Agency (ESA), and the Canadian Space Agency (CSA).
NASA's New Artemis Crew Transport Electric Vehicles | Kennedy Space Center
Three specially designed, fully electric, environmentally friendly crew transportation vehicles for Artemis missions arrived at NASA’s Kennedy Space Center in Florida on July 11, 2023.
One of the zero-emission vehicles is shown here at Launch Pad 39B. From left are Jeremy Graeber, Artemis assistant launch director; Charlie Blackwell-Thompson, Artemis launch director; and Tony Aquila, chairman and CEO, Canoo Technologies Inc.
With the Vehicle Assembly Building (VAB) in the background, the three specially designed, fully electric, environmentally-friendly crew transportation vehicles for Artemis missions arrived at NASA’s Kennedy Space Center in Florida on July 11, 2023. The zero-emission vehicles, which will carry astronauts to Launch Complex 39B for Artemis missions, were delivered by the manufacturer, Canoo Technologies Inc. of Torrance, California.
The Anvil of Creation: Star Formation 3D Computer Simulation | NOIRLab
[No Audio] This computer simulation shows the evolution of a star formation region over several million years. It is the most realistic, highest-resolution 3D simulation of star formation to date. It is the first time an entire gas cloud—100 times more massive than previously possible and full of vibrant colors—has been simulated and also the first simulation which simultaneously models star formation, evolution and dynamics while accounting for stellar feedback, including jets, radiation, wind and nearby supernovae activity.
The color of the represented gas is determined by how turbulent the gas is (purple=low, yellow=high) and the lightness increases with the density of the gas.
Due to turbulence and gravity the cloud quickly develops a filamentary structure. In these dense filaments the gravitational force overpowers pressure forces, causing the gas to collapse and form stars. Gas continues to fall onto newly formed stars, but interactions with the local magnetic field cause a portion of the infalling gas to be launched away from the star. These high velocity materials form protostellar jets. Jets stir and disrupt the flow of gas in the cloud, allowing more stars to form.
Massive stars launch powerful stellar winds, which both heat and push away the nearby gas. Once a number of massive stars have formed, their combined effect becomes powerful enough to disrupt star formation in the entire cloud and expel the remaining gas. With most of the gas flung out, the gravitational force weakens in the remaining star cluster, leading to its expansion and eventual dissolution. Massive stars live only a relatively short time, a few million years, after which they explode as supernovae. Even one of these extremely powerful explosions could disrupt the cloud and expel all gas. However, by the time they occur the cloud has already been destroyed by radiation and stellar winds from massive stars.
Note: The full dome video display format is designed for projection systems in planetariums.
Credit: NOIRLab/STARFORGE cooperation/Planetarium Mannheim/National Science Foundation (NSF)
Exploring the Cosmic Jewels of Irregular Dwarf Galaxy Sextans A | Mayall Telescope
CosmoView Episode 29: The dwarf galaxy Sextans A is a cosmic jewelry box filled with bright young stars. Located around 4.4 million light-years from Earth, it has been contorted by several supernova explosions that give it a peculiar square shape. The galaxy overflows with young, blue stars and red-hued star-forming regions. This glittering image was taken at the 4-meter Nicholas U. Mayall Telescope at Kitt Peak National Observatory in Arizona.
Credit: KPNO/NOIRLab/NSF/AURA, P. Marenfeld
Data obtained and processed by: P. Massey (Lowell Obs.), G. Jacoby, K. Olsen, & C. Smith (AURA/NSF)
Image Processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)
The Cosmic Jewels of Irregular Dwarf Galaxy Sextans A | Mayall Telescope
This glittering image captured by the 4-meter Nicholas U. Mayall Telescope at Kitt Peak National Observatory, a program of the National Science Foundation’s NOIRLab, shows the irregular dwarf galaxy Sextans A, which lies around 4.4 million light-years from Earth. This galaxy, which is only a fraction of the size of the Milky Way, has been contorted by successive waves of supernova explosions into the roughly square shape we see from Earth—a cosmic jewelry box filled with bright young stars.
Sextans A is displayed in style in this gorgeous image, which showcases the irregular shape of this dwarf galaxy. Irregular galaxies such as Sextans A do not have the regular appearance of spiral or elliptical galaxies, but instead display a range of weird and wonderful shapes. These galaxies are relatively small, and they are often susceptible to distortions resulting from close encounters or collisions with larger galaxies—sometimes leading to their irregular shapes. Sextans A is particularly small, measuring only about 5,000 light-years across.
Credit: KPNO/NOIRLab/NSF/Association of Universities for Research in Astronomy (AURA)
Data Obtained & Processed by: P. Massey (Lowell Obs.), G. Jacoby, K. Olsen, & C. Smith (AURA/NSF)
Image Processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)
Why is our Sun so active now? No one is certain. An increase in surface activity was expected because our Sun is approaching solar maximum in 2025. However, last month our Sun sprouted more sunspots than in any month during the entire previous 11-year solar cycle—even dating back to 2002. The picture is a composite of images taken every day from January to June 2023 by NASA's Solar Dynamic Observatory.
Showing a high abundance of sunspots, large individual spots can be tracked across the Sun's disk, left to right, over about two weeks. As a solar cycle continues, sunspots typically appear closer to the equator. Sunspots are just one way that our Sun displays surface activity. NASA also tracks solar flares and coronal mass ejections (CMEs) that expel particles out into the Solar System. Since these particles can affect astronauts and electronics, we most closely monitor these surface disturbances. Conversely, solar activity can have very high aesthetic value in the Earth's atmosphere when they trigger aurora.
Image Credit: NASA, Solar Dynamic Observatory (SDO)
Dark Shrouds in Orion: LDN 1622 | Mayall Telescope
The shadowy clouds of LDN 1622 are pictured in this observation from the 4-meter Nicholas U. Mayall Telescope at Kitt Peak National Observatory (KPNO) in Arizona, produced through a program of the National Science Foundation’s NOIRLab.
LDN 1622 is a dark nebula, so called because these dense interstellar clouds of gas and dust blot out light from background objects, appearing as ink-dark clouds against a backdrop of stars. This enigmatic cosmic cloud lies 1,300 light-years from Earth in the nearby Orion complex, a star-forming region thronging with young stars and other dark nebulae.
Credit: KPNO/NOIRLab/NSF/Association of Universities for Research in Astronomy (AURA)/T. A. Rector
Image Processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)
Pan of Serene Supernova Aftermath: Galaxy UGC 11860 | Hubble
The spiral galaxy UGC 11860 seems to float serenely against a field of background galaxies in this image from the NASA/European Space Agency Hubble Space Telescope. UGC 11860 lies around 184 million light-years away in the constellation Pegasus, and its untroubled appearance is deceiving; this galaxy recently played host to an almost unimaginably energetic stellar explosion.
Credit: European Space Agency (ESA)/Hubble & NASA, A. Filippenko, J. D. Lyman
Planet Mars Images: July 9-10, 2023 | NASA's Perseverance Rover | JPL
Mars2020 - sol 654
Mars2020 - sol 848
Mars2020 - sol 847
Mars2020 - sol 846
Mars2020 - sol 843
Mars2020 - sol 847
Timekeeping on Mars
Sol (borrowed from the Latin word for sun) is a solar day on Mars; that is, a Mars-day. A sol is the apparent interval between two successive returns of the Sun to the same meridian (sundial time) as seen by an observer on Mars. It is one of several units for timekeeping on Mars.
A sol is slightly longer than an Earth day. It is approximately 24 hours, 39 minutes, 35 seconds long. A Martian year is approximately 668 sols, equivalent to approximately 687 Earth days or 1.88 Earth years.
NASA's Mars Curiosity and Perseverance rovers all counted the sol of touchdown as "Sol 0."
2+ Years on Mars (2021-2023)
Mission Name: Mars 2020
Rover Name: Perseverance
Main Job: Seek signs of ancient life and collect samples of rock and regolith (broken rock and soil) for possible return to Earth.
Mars Helicopter (Ingenuity)
Launch: July 30, 2020
Landing: Feb. 18, 2021, Jezero Crater, Mars
For more information on NASA's Mars missions, visit: mars.nasa.gov
Image Credits: NASA/JPL-Caltech/Arizona State University/Malin Space Science Systems (MSSS)
The Evolution of Supergiant Star Eta Carinae | Hubble
Hubblecast 122 Light: This Hubblecast explores the various observations the NASA/European Space Agency Hubble Space Telescope has made of the Eta Carinae in various wavelengths. Eta Carinae is located 7,500 light-years away in the constellation Carina. It is within the Carina Nebula, a giant star-forming region in the Carina–Sagittarius Arm of the Milky Way.
NASA's X-59 Supersonic Research Aircraft Prepared for Testing
NASA’s X-59 was moved to Run Stall 5. Technicians check out the X-59 supersonic aircraft as it sits near the runway at Lockheed Martin Skunk Works in Palmdale, California.
NASA’s X-59 aircraft is parked near the runway at Lockheed Martin Skunk Works in Palmdale, California, on June 19, 2023. This is where the X-59 will be housed during ground and initial flight tests.
NASA's X-59 supersonic research aircraft parked inside the hangar with a head-on view
NASA’s X-59 research aircraft has moved from its construction site to the flight line—or the space between the hangar and the runway—at Lockheed Martin Skunk Works in Palmdale, California, on June 16, 2023. This milestone kicks off a series of ground tests to ensure the X-59 is safe and ready to fly.
The X-59 is designed to fly faster than Mach 1 while reducing the resulting sonic boom to a thump for people on the ground. NASA will evaluate this technology during flight tests as part of the agency’s Quesst mission, which helps enable commercial supersonic air travel over land.
For more information about NASA's quiet supersonic mission, visit:
Zooming in on Star Formation in the Southern Milky Way | ESO
This zoom sequence takes the viewer deep into the spectacular southern Milky Way in the constellation of Carina (The Keel). We see two regions where stars are forming, the very rich cluster NGC 3603 and its surroundings and the strange glowing gas clouds known as NGC 3576. The final detailed views come from images taken with the Wide Field Imager on the MPG/ESO 2.2-meter telescope at the European Southern Observatory’s La Silla Observatory in Chile.
The star cluster NGC 3603 is located 20,000 light-years away in the Carina–Sagittarius spiral arm of the Milky Way galaxy. The collection of glowing gas clouds, known as NGC 3576, lies only about half as far from Earth.
Credit: European Southern Observatory (ESO)/G. Beccari/N. Risinger (skysurvey.org)
A Close-up Look at Star Formation in the Southern Milky Way | ESO
This pan video gives a close-up view of a spectacular mosaic of images from the Wide Field Imager on the MPG/ESO 2.2-meter telescope at the European Southern Observatory’s La Silla Observatory in Chile that shows two dramatic star formation regions in the southern Milky Way. The first is of these, on the left, is dominated by the star cluster NGC 3603, located 20,000 light-years away, in the Carina–Sagittarius spiral arm of the Milky Way galaxy. The second object, on the right, is a collection of glowing gas clouds known as NGC 3576 that lies only about half as far from Earth.
Credit: European Southern Observatory (ESO)/G. Beccari
This mosaic of images from the Wide Field Imager on the MPG/ESO 2.2-meter telescope at the European Southern Observatory’s La Silla Observatory in Chile shows two dramatic star formation regions in the southern Milky Way. The first of these, on the left, is dominated by the star cluster NGC 3603, located about 20,000 light-years away, in the Carina–Sagittarius spiral arm of the Milky Way galaxy. The second object, on the right, is a collection of glowing gas clouds known as NGC 3576 that lies only about half as far from Earth.
Credit: European Southern Observatory (ESO)/G. Beccari
The Eta Aquariids meteor shower was captured in this stunning image by astrophotographer Petr Horálek. It was taken near San Pedro de Atacama, a Chilean town about 50 km away from the Chajnantor observatory site, where APEX and ALMA, astronomical facilities co-owned by the European Southern Observatory (ESO), are located. The Eta Aquariids meteors are caused by leftover debris from Halley’s comet and make up the bright, arrow-like darts of light in the photo.
The luminous object towards the bottom of the sky is Venus. Above it, arranged in a satisfying line, are several planets in conjunction. Directly above Venus is Jupiter, followed by the bright red Mars, and then Saturn. Conjunctions such as this are rare, often occurring decades apart. The planets also trace the zodiacal light, the faint glow stretching like a pillar, up towards the bright stellar-dense center of the Milky Way, our home galaxy.
Zodiacal light is often seen from dark sites like ESO observatories just after sunset, or before sunrise, and is the reflected sunlight from dust particles in the plane of the Solar System. The dust comes from asteroids, passing comets, and even from other inner Solar System planets, such as Mars. Here we see the zodiacal light paired with the red sunset over the mountains and volcanoes surrounding the Chajnantor site, a spectacular backdrop to this dreamy night sky.
Credit: European Southern Observatory (ESO)/P. Horalek