Clarksville, TN Online: News, Opinion, Arts & Entertainment.


Topic: Greenbelt MD

NASA’s MAVEN spacecraft captures images of Martian Night Sky Pulsing in Ultraviolet Light

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Vast areas of the Martian night sky pulse in ultraviolet light, according to images from NASA’s MAVEN spacecraft. The results are being used to illuminate complex circulation patterns in the Martian atmosphere.

The MAVEN team was surprised to find that the atmosphere pulsed exactly three times per night, and only during Mars’ spring and fall. The new data also revealed unexpected waves and spirals over the winter poles, while also confirming the Mars Express spacecraft results that this nightglow was brightest over the winter polar regions.

This is an image of the ultraviolet “nightglow” in the Martian atmosphere. Green and white false colors represent the intensity of ultraviolet light, with white being the brightest. The nightglow was measured at about 70 kilometers (approximately 40 miles) altitude by the Imaging UltraViolet Spectrograph instrument on NASA’s MAVEN spacecraft. (NASA/MAVEN/Goddard Space Flight Center/CU/LASP)

This is an image of the ultraviolet “nightglow” in the Martian atmosphere. Green and white false colors represent the intensity of ultraviolet light, with white being the brightest. The nightglow was measured at about 70 kilometers (approximately 40 miles) altitude by the Imaging UltraViolet Spectrograph instrument on NASA’s MAVEN spacecraft. (NASA/MAVEN/Goddard Space Flight Center/CU/LASP)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Hubble Space Telescope use Moon to observe Earth’s Ozone Layer

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Taking advantage of a total lunar eclipse, astronomers using NASA’s Hubble Space Telescope have detected Earth’s own brand of sunscreen – ozone – in our atmosphere. This method simulates how astronomers and astrobiology researchers will search for evidence of life beyond Earth by observing potential “biosignatures” on exoplanets (planets around other stars).

Hubble did not look at Earth directly. Instead, the astronomers used the Moon as a mirror to reflect sunlight, which had passed through Earth’s atmosphere, and then reflected back towards Hubble.

This illustration shows the Hubble Space Telescope superimposed on an image of the Moon, seen during a lunar eclipse. Taking advantage of a total lunar eclipse in January 2019, astronomers using NASA's Hubble Space Telescope have detected ozone in Earth's atmosphere. This method serves as a proxy for how they will observe Earth-like planets transiting in front of other stars in search of life. (M. Kornmesser (ESA/Hubble), NASA, and ESA)

This illustration shows the Hubble Space Telescope superimposed on an image of the Moon, seen during a lunar eclipse. Taking advantage of a total lunar eclipse in January 2019, astronomers using NASA’s Hubble Space Telescope have detected ozone in Earth’s atmosphere. This method serves as a proxy for how they will observe Earth-like planets transiting in front of other stars in search of life. (M. Kornmesser (ESA/Hubble), NASA, and ESA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s OSIRIS-REx Spacecraft to make second practice run before landing on Asteroid Bennu

 

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s first asteroid sampling spacecraft is making final preparations to grab a sample from asteroid Bennu’s surface. Next week, the OSIRIS-REx mission will conduct a second rehearsal of its touchdown sequence, practicing the sample collection activities one last time before touching down on Bennu this fall.

On August 11th, the mission will perform its “Matchpoint” rehearsal – the second practice run of the Touch-and-Go (TAG) sample collection event. The rehearsal will be similar to the April 14th “Checkpoint” rehearsal, which practiced the first two maneuvers of the descent, but this time the spacecraft will add a third maneuver, called the Matchpoint burn, and fly even closer to sample site Nightingale – reaching an altitude of approximately 131 ft (40 m) – before backing away from the asteroid.

This artist’s concept shows the trajectory and configuration of NASA’s OSIRIS-REx spacecraft during Matchpoint rehearsal, which is the final time the mission will practice the initial steps of the sample collection sequence before touching down on asteroid Bennu. (NASA/Goddard/University of Arizona)

This artist’s concept shows the trajectory and configuration of NASA’s OSIRIS-REx spacecraft during Matchpoint rehearsal, which is the final time the mission will practice the initial steps of the sample collection sequence before touching down on asteroid Bennu. (NASA/Goddard/University of Arizona)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Lucy Mission Passes Critical Mission Milestone

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Lucy mission last week marked the completion of a major milestone on the path to spacecraft assembly, test, and launch operations.

The Systems Integration Review ensured segments, components, and subsystems, scientific instrumentation, electrical and communication systems, and navigation systems are on schedule to be integrated into the system. It confirmed that facilities, support personnel, and plans and procedures are on schedule to support integration.

NASA's Lucy spacecraft poses in front of the orbit trajectory for her 12-year mission to study the Trojan Asteroids. Lucy will be featured in her own cartoon series coming soon. (NASA's Goddard Space Flight Center)

NASA’s Lucy spacecraft poses in front of the orbit trajectory for her 12-year mission to study the Trojan Asteroids. Lucy will be featured in her own cartoon series coming soon. (NASA’s Goddard Space Flight Center)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Aqua Satellite watches Hurricane Douglas as it heads toward Hawaii

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Aqua satellite provided a visible image of Hurricane Douglas is it continued on its track toward Hawaii. The storm is now a Category 2 hurricane and warnings were posted on July 25th, 2020 as the storm approaches.

The Central Pacific Hurricane Center has posted warnings for Douglas.

A Tropical Storm Warning is in effect for Hawaii County, Maui County, including the islands of Maui, Lanai, Molokai and Kahoolawe.

On July 24 at 12:30pm CT, the MODIS instrument aboard NASA's Aqua satellite provided a visible image of Hurricane Douglas as it continued on a track toward the Hawaiian Islands. The image showed a clear eye with a circular structure. (NASA Worldview, Earth Observing System Data and Information System (EOSDIS))

On July 24 at 12:30pm CT, the MODIS instrument aboard NASA’s Aqua satellite provided a visible image of Hurricane Douglas as it continued on a track toward the Hawaiian Islands. The image showed a clear eye with a circular structure. (NASA Worldview, Earth Observing System Data and Information System (EOSDIS))

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA installs Robotic Tool Stowage unit aboard International Space Station

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA says storage is just as important aboard the International Space Station as it is on Earth. While the space station is about the size of a football field, the living space inside is much smaller than that.

Just as you wouldn’t store garden tools in a house when you could store them in a shed outside, astronauts now have a “housing unit” in which they can store tools for use on the exterior of the space station.

The Mobile Base System moves on the Mobile Transporter rail car along truss rails covering the length of the space station. It provides a movable platform for Canadarm2 and Dextre and can access any of eight worksites that feature power connections. (NASA)

The Mobile Base System moves on the Mobile Transporter rail car along truss rails covering the length of the space station. It provides a movable platform for Canadarm2 and Dextre and can access any of eight worksites that feature power connections. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA, ESA’s Solar Orbiter Returns First Data, Snaps Closest Pictures of the Sun

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – The first images from ESA/NASA’s Solar Orbiter are now available to the public, including the closest pictures ever taken of the Sun.

Solar Orbiter is an international collaboration between the European Space Agency, or ESA, and NASA, to study our closest star, the Sun. Launched on February 9th, 2020 (EST), the spacecraft completed its first close pass of the Sun in mid-June.

This image shows a view of the Sun captured with the Extreme Ultraviolet Imager (EUI) on ESA/NASA's Solar Orbiter on May 30, 2020. They show the Sun’s appearance at a wavelength of 17 nanometers, which is in the extreme ultraviolet region of the electromagnetic spectrum. (Solar Orbiter/EUI Team (ESA & NASA); CSL, IAS, MPS, PMOD/WRC, ROB, UCL/MSSL)

This image shows a view of the Sun captured with the Extreme Ultraviolet Imager (EUI) on ESA/NASA’s Solar Orbiter on May 30, 2020. They show the Sun’s appearance at a wavelength of 17 nanometers, which is in the extreme ultraviolet region of the electromagnetic spectrum. (Solar Orbiter/EUI Team (ESA & NASA); CSL, IAS, MPS, PMOD/WRC, ROB, UCL/MSSL)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Disk Detective project lets public help find Planet Forming Disks

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA says Planets form from gas and dust particles swirling around baby stars in enormous spinning disks. But because this process takes millions of years, scientists can only learn about these disks by finding and studying a lot of different examples.

Through a project called Disk Detective, you can help. Anyone, regardless of background or prior knowledge, can assist scientists in figuring out the mysteries of planet formation. Disk Detective is an example of citizen science, a collaboration between professional scientists and members of the public.

This illustration shows a young, Sun-like star encircled by its planet-forming disk of gas and dust. (NASA/JPL-Caltech)

This illustration shows a young, Sun-like star encircled by its planet-forming disk of gas and dust. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Parker Solar Probe takes a look at Comet NEOWISE

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Parker Solar Probe was at the right place at the right time to capture a unique view of comet NEOWISE on July 5th, 2020. Parker Solar Probe’s position in space gave the spacecraft an unmatched view of the comet’s twin tails when it was particularly active just after its closest approach to the Sun, called perihelion.

The comet was discovered by NASA’s Near-Earth Object Wide-field Infrared Survey Explorer, or NEOWISE, on March 27th. Since then, the comet — called comet C/2020 F3 NEOWISE and nicknamed comet NEOWISE — has been spotted by several NASA spacecraft, including Parker Solar Probe, NASA’s Solar and Terrestrial Relations Observatory, the ESA/NASA Solar and Heliospheric Observatory, and astronauts aboard the International Space Station.

An unprocessed image from the WISPR instrument on board NASA’s Parker Solar Probe shows comet NEOWISE on July 5, 2020, shortly after its closest approach to the Sun. The Sun is out of frame to the left. The faint grid pattern near the center of the image is an artifact of the way the image is created. The small black structure near the lower left of the image is caused by a grain of dust resting on the imager’s lens. (NASA/Johns Hopkins APL/Naval Research Lab/Parker Solar Probe/Brendan Gallagher)

An unprocessed image from the WISPR instrument on board NASA’s Parker Solar Probe shows comet NEOWISE on July 5, 2020, shortly after its closest approach to the Sun. The Sun is out of frame to the left. The faint grid pattern near the center of the image is an artifact of the way the image is created. The small black structure near the lower left of the image is caused by a grain of dust resting on the imager’s lens. (NASA/Johns Hopkins APL/Naval Research Lab/Parker Solar Probe/Brendan Gallagher)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA says Two Bizarre Brown Dwarfs Found With Citizen Scientists’ Help

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – With the help of citizen scientists, astronomers have discovered two highly unusual brown dwarfs, balls of gas that are not massive enough to power themselves the way stars do.

Participants in the NASA-funded Backyard Worlds: Planet 9 project helped lead scientists to these bizarre objects, using data from NASA’s Near-Earth Object Wide-Field Infrared Survey Explorer (NEOWISE) satellite along with all-sky observations collected between 2009 and 2011 under its previous moniker, WISE. Backyard Worlds: Planet 9 is an example of “citizen science,” a collaboration between professional scientists and members of the public.

This artist's concept shows a brown dwarf, a ball of gas not massive enough to power itself the way stars do. Despite their name, brown dwarfs would appear magenta or orange-red to the human eye if seen close up. (William Pendrill (CC BY))

This artist’s concept shows a brown dwarf, a ball of gas not massive enough to power itself the way stars do. Despite their name, brown dwarfs would appear magenta or orange-red to the human eye if seen close up. (William Pendrill (CC BY))

«Read the rest of this article»

Sections: Technology | No Comments
 



  • Visit Us On FacebookVisit Us On TwitterVisit Us On PinterestVisit Us On YoutubeCheck Our FeedVisit Us On Instagram
  • Personal Controls

    Archives

      August 2020
      S M T W T F S
      « Jul    
       1
      2345678
      9101112131415
      16171819202122
      23242526272829
      3031