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


Topic: California Institute of Technology in Pasadena

NASA says Rosetta Mission has selected Comet Landing Sites for Philae Lander

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – The European Space Agency’s Rosetta mission has chosen five candidate landing sites on comet 67P/Churyumov-Gerasimenko for its Philae lander. Philae’s descent to the comet’s nucleus, scheduled for this November, will be the first such landing ever attempted.

“This is the first time landing sites on a comet have been considered,” said Stephan Ulamec, Philae Lander Manager at the German Aerospace Center, Cologne, Germany. “The candidate sites that we want to follow up for further analysis are thought to be technically feasible on the basis of a preliminary analysis of flight dynamics and other key issues – for example, they all provide at least six hours of daylight per comet rotation and offer some flat terrain. Of course, every site has the potential for unique scientific discoveries.”

This annotated image depicts four of the five potential landing sites for Rosetta's Philae lander. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM)

This annotated image depicts four of the five potential landing sites for Rosetta’s Philae lander. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s New Horizons spacecraft passes Neptune’s Orbit on it’s way to Pluto

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s Pluto-bound New Horizons spacecraft has traversed the orbit of Neptune. This is its last major crossing en route to becoming the first probe to make a close encounter with distant Pluto on July 14th, 2015.

The sophisticated piano-sized spacecraft, which launched in January 2006, reached Neptune’s orbit — nearly 2.75 billion miles from Earth — in a record eight years and eight months. New Horizons’ milestone matches precisely the 25th anniversary of the historic encounter of NASA’s Voyager 2 spacecraft with Neptune on August 25th, 1989.

NASA's Pluto-bound New Horizons spacecraft captured this view of the giant planet Neptune and its large moon Triton on July 10, 2014, from a distance of about 2.45 billion miles (3.96 billion kilometers) - more than 26 times the distance between the Earth and sun. The 967-millisecond exposure was taken with the New Horizons telescopic Long-Range Reconnaissance Imager (LORRI). (NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.)

NASA’s Pluto-bound New Horizons spacecraft captured this view of the giant planet Neptune and its large moon Triton on July 10, 2014, from a distance of about 2.45 billion miles (3.96 billion kilometers) – more than 26 times the distance between the Earth and sun. The 967-millisecond exposure was taken with the New Horizons telescopic Long-Range Reconnaissance Imager (LORRI). (NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) observes Black Hole’s center lit up by nearby Corona

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA –  NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) has captured an extreme and rare event in the regions immediately surrounding a supermassive black hole. A compact source of X-rays that sits near the black hole, called the corona, has moved closer to the black hole over a period of just days.

“The corona recently collapsed in toward the black hole, with the result that the black hole’s intense gravity pulled all the light down onto its surrounding disk, where material is spiraling inward,” said Michael Parker of the Institute of Astronomy in Cambridge, United Kingdom, lead author of a new paper on the findings appearing in the Monthly Notices of the Royal Astronomical Society.

The regions around supermassive black holes shine brightly in X-rays. Some of this radiation comes from a surrounding disk, and most comes from the corona, pictured here in this artist's concept as the white light at the base of a jet. This is one possible configuration for a corona -- its actual shape is unclear. (NASA/JPL-Caltech)

The regions around supermassive black holes shine brightly in X-rays. Some of this radiation comes from a surrounding disk, and most comes from the corona, pictured here in this artist’s concept as the white light at the base of a jet. This is one possible configuration for a corona — its actual shape is unclear. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Cassini spacecraft ready to execute burn to target Saturn’s moon, Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft will execute the largest planned maneuver of the spacecraft’s remaining mission on Saturday, August 9th. The maneuver will target Cassini toward an August 21st encounter with Saturn’s largest moon, Titan.

The main engine firing will last about a minute and will provide a change in velocity of 41 feet per second (12.5 meters per second). This is the largest maneuver by Cassini in five years.

This is an artists concept of Cassini during the Saturn Orbit Insertion (SOI) maneuver, just after the main engine has begun firing. (NASA/JPL)

This is an artists concept of Cassini during the Saturn Orbit Insertion (SOI) maneuver, just after the main engine has begun firing. (NASA/JPL)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Mars Odyssey spacecraft adjusts orbit in lieu of Comet Siding Spring Flyby

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Mars Odyssey spacecraft has successfully adjusted the timing of its orbit around Mars as a defensive precaution for a comet’s close flyby of Mars on October 19th, 2014.

The orbiter fired thrusters for five and a half seconds on Tuesday, August 5th. The maneuver was calculated to place the orbiter behind Mars during the half hour on the flyby date when dust particles released from comet C/2013 A1 Siding Spring are most likely to reach Mars.

NASA's Mars Odyssey spacecraft passes above Mars' south pole in this artist's concept illustration. (NASA/JPL)

NASA’s Mars Odyssey spacecraft passes above Mars’ south pole in this artist’s concept illustration. (NASA/JPL)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Curiosity Mars Rover finishes second year on the Red Planet

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s most advanced roving laboratory on Mars celebrates its second anniversary since landing inside the Red Planet’s Gale Crater on August 5th, 2012, PDT (August 6th, 2012, EDT).

During its first year of operations, the Curiosity rover fulfilled its major science goal of determining whether Mars ever offered environmental conditions favorable for microbial life.

Clay-bearing sedimentary rocks on the crater floor in an area called Yellowknife Bay yielded evidence of a lake bed environment billions of years ago that offered fresh water, all of the key elemental ingredients for life, and a chemical source of energy for microbes, if any existed there.

This image from the Navigation Camera on NASA's Curiosity Mars rover shows wheel tracks printed by the rover as it drove on the sandy floor of a lowland called "Hidden Valley" on the route toward Mount Sharp. The image was taken on Aug. 4, 2014.

This image from the Navigation Camera on NASA’s Curiosity Mars rover shows wheel tracks printed by the rover as it drove on the sandy floor of a lowland called “Hidden Valley” on the route toward Mount Sharp. The image was taken on Aug. 4, 2014.

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA observes Three Large Volcanic Eruptions on Jupiter’s Moon Io

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Three massive volcanic eruptions occurred on Jupiter’s moon Io within a two-week period in August of last year. This led astronomers to speculate that such “outbursts,” which can send material hundreds of miles above the surface, might be much more common than they thought.

“We typically expect one huge outburst every one or two years, and they’re usually not this bright,” said Imke de Pater, professor and chair of astronomy at the University of California, Berkeley, and lead author of one of two papers describing the eruptions. “Here we had three extremely bright outbursts, which suggest that if we looked more frequently we might see many more of them on Io.”

Jupiter's moon Io saw three massive volcanic eruptions within a two-week period last August. (Katherine de Kleer/UC Berkeley/Gemini Observatory)

Jupiter’s moon Io saw three massive volcanic eruptions within a two-week period last August. (Katherine de Kleer/UC Berkeley/Gemini Observatory)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) finishes it’s 2nd Year in Space

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, a premier black-hole hunter among other talents, has finished up its two-year prime mission, and will be moving onto its next phase, a two-year extension.

“It’s hard to believe it’s been two years since NuSTAR launched,” said Fiona Harrison, the mission’s principal investigator at the California Institute of Technology in Pasadena. “We achieved all the mission science objectives and made some amazing discoveries I never would have predicted two years ago.”

Artist's concept of NuSTAR on orbit. NuSTAR has a 10-m (30') mast that deploys after launch to separate the optics modules (right) from the detectors in the focal plane (left). The spacecraft, which controls NuSTAR's pointings, and the solar panels are with the focal plane. NuSTAR has two identical optics modules in order to increase sensitivity. The background is an image of the Galactic center obtained with the Chandra X-ray Observatory.

Artist’s concept of NuSTAR on orbit. NuSTAR has a 10-m (30′) mast that deploys after launch to separate the optics modules (right) from the detectors in the focal plane (left). The spacecraft, which controls NuSTAR’s pointings, and the solar panels are with the focal plane. NuSTAR has two identical optics modules in order to increase sensitivity. The background is an image of the Galactic center obtained with the Chandra X-ray Observatory.

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Mars Curiosity rover moves toward bedrock outcrop at Mount Sharp

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – As it approaches the second anniversary of its landing on Mars, NASA’s Curiosity rover is also approaching its first close look at bedrock that is part of Mount Sharp, the layered mountain in the middle of Mars’ Gale Crater.

The mission made important discoveries during its first year by finding evidence of ancient lake and river environments. During its second year, it has been driving toward long-term science destinations on lower slopes of Mount Sharp.

This full-circle panorama of the landscape surrounding NASA's Curiosity Mars rover on July 31, 2014, offers a view into sandy lower terrain called "Hidden Valley," which is on the planned route ahead. It combines several images from Curiosity's Navigation Camera. South is at the center. (NASA/JPL-Caltech)

This full-circle panorama of the landscape surrounding NASA’s Curiosity Mars rover on July 31, 2014, offers a view into sandy lower terrain called “Hidden Valley,” which is on the planned route ahead. It combines several images from Curiosity’s Navigation Camera. South is at the center. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA reports Rosetta spacecraft captures pictures of Coma surrounding it’s target Comet

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Less than a week before Rosetta’s rendezvous with comet 67P/Churyumov-Gerasimenko, images obtained by OSIRIS, the spacecraft’s onboard scientific imaging system, show clear signs of a coma surrounding the comet’s nucleus.

A new image from July 25th, 2014, clearly reveals an extended coma shrouding 67P’s nucleus. “Our coma images cover an area of 150 by 150 square kilometers (90 by 90 square miles),” said Luisa Lara from the Institute of Astrophysics in Andalusia, Spain.

The nucleus of comet 67P/Churyumov-Gerasimernko as seen by Rosetta's OSIRIS instrument from a distance of 1,210 miles (1,950 kilometers) on July 29, 2014. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

The nucleus of comet 67P/Churyumov-Gerasimernko as seen by Rosetta’s OSIRIS instrument from a distance of 1,210 miles (1,950 kilometers) on July 29, 2014. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

«Read the rest of this article»

Sections: Technology | No Comments
 


Page 2 of 2412345...»

Personal Controls

Archives