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


Topic: California Institute of Technology in Pasadena

NASA reformats Mars Rover Opportunity’s onboard Flash Memory

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – After avoiding use of the rover’s flash memory for three months, the team operating NASA’s 11-year-old Mars Exploration Rover Opportunity has reformatted the vehicle’s flash memory banks and resumed storing some data overnight for transmitting later.

The team received confirmation from Mars on March 20th that the reformatting completed successfully. The rover switched to updated software earlier this month that will avoid using one of the seven banks of onboard flash memory.

This view from NASA's Opportunity Mars rover shows part of "Marathon Valley" as seen from an overlook north of the valley. It was taken by the rover's Pancam on March 13, 2015. (NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.)

This view from NASA’s Opportunity Mars rover shows part of “Marathon Valley” as seen from an overlook north of the valley. It was taken by the rover’s Pancam on March 13, 2015. (NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA successfully tests new Mars Landing Technology

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – It’s tricky to get a spacecraft to land exactly where you want. That’s why the area where the Mars rover Curiosity team had targeted to land was an ellipse that may seem large, measuring 12 miles by 4 miles (20 by 7 kilometers).

Engineers at NASA’s Jet Propulsion Laboratory in Pasadena, California, have been developing cutting-edge technologies that would enable spacecraft to land at a specific location on Mars — or any other planetary body — with more precision than ever before.

On December 9th, 2014, the Xombie rocket carrying the ADAPT system reached a maximum altitude of 1,066 feet (325 meters) before beginning its descent. (NASA Photo / Tom Tschida)

On December 9th, 2014, the Xombie rocket carrying the ADAPT system reached a maximum altitude of 1,066 feet (325 meters) before beginning its descent. (NASA Photo / Tom Tschida)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA looks into the mystery of the Sun’s Nanoflares

 

Written by Dr. Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – When you attach the prefix “nano” to something, it usually means “very small.” Solar flares appear to be the exception.

Researchers are studying a type of explosion on the sun called a ‘nanoflare.’  A billion times less energetic than ordinary flares, nanoflares have a power that belies their name.

“A typical ‘nanoflare’ has the same energy as 240 megatons of TNT,” says physicist David Smith of UC Santa Cruz. “That would be something like 10,000 atomic fission bombs.”

YouTube Preview Image «Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Soil Moisture Active Passive (SMAP) gets ready to monitor soil’s freeze, thaw cycles

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Those who feel as though they’ve been living in the never-ending winter of the movie “Frozen” this year may be glad to hear that the spring thaw is now typically arriving up to two weeks earlier in the Northern Hemisphere than it did 20 to 30 years ago.

But the changing date of the spring thaw has consequences far beyond reducing the number of mornings when you have to scrape off your windshield.

One ecosystem where scientists would most like to understand the effects of changing freeze/thaw cycles is boreal forests, the great ring of green covering the land nearest the North Pole.

SMAP will monitor the frozen or thawed state of the global landscape north of 45 degrees north latitude. (UCAR/Carlye Calvin)

SMAP will monitor the frozen or thawed state of the global landscape north of 45 degrees north latitude. (UCAR/Carlye Calvin)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Mars Curiosity rover uses arm to move sample rock powder to analyzing instrument

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Curiosity Mars rover used its robotic arm Wednesday, March 11th, to sieve and deliver a rock-powder sample to an onboard instrument. The sample was collected last month before the team temporarily suspended rover arm movement pending analysis of a short circuit.

The Chemistry and Mineralogy (CheMin) analytical instrument inside the rover received the sample powder. This sample comes from a rock target called “Telegraph Peak,” the third target drilled during about six months of investigating the “Pahrump Hills” outcrop on Mount Sharp. With this delivery completed, the rover team plans to drive Curiosity away from Pahrump Hills in coming days.

This area at the base of Mount Sharp on Mars includes a pale outcrop, called "Pahrump Hills," that NASA's Curiosity Mars rover investigated from September 2014 to March 2015, and the "Artist's Drive" route toward higher layers of the mountain. (NASA/JPL-Caltech/Univ. of Arizona)

This area at the base of Mount Sharp on Mars includes a pale outcrop, called “Pahrump Hills,” that NASA’s Curiosity Mars rover investigated from September 2014 to March 2015, and the “Artist’s Drive” route toward higher layers of the mountain. (NASA/JPL-Caltech/Univ. of Arizona)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Cassini spacecraft reveals Ocean on Saturn’s moon Enceladus may have Hydrothermal Activity

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft has provided scientists the first clear evidence that Saturn’s moon Enceladus exhibits signs of present-day hydrothermal activity which may resemble that seen in the deep oceans on Earth. The implications of such activity on a world other than our planet open up unprecedented scientific possibilities.

“These findings add to the possibility that Enceladus, which contains a subsurface ocean and displays remarkable geologic activity, could contain environments suitable for living organisms,” said John Grunsfeld, astronaut and associate administrator of NASA’s Science Mission Directorate in Washington. “The locations in our solar system where extreme environments occur in which life might exist may bring us closer to answering the question: are we alone in the universe.”

This cutaway view of Saturn's moon Enceladus is an artist's rendering that depicts possible hydrothermal activity that may be taking place on and under the seafloor of the moon's subsurface ocean, based on recently published results from NASA's Cassini mission. (NASA/JPL-Caltech)

This cutaway view of Saturn’s moon Enceladus is an artist’s rendering that depicts possible hydrothermal activity that may be taking place on and under the seafloor of the moon’s subsurface ocean, based on recently published results from NASA’s Cassini mission. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Mars Curiosity rover to begin using it’s arm again

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Managers of NASA’s Curiosity Mars rover mission expect to approve resumption of rover arm movements as early as next week while continuing analysis of what appears to be an intermittent short circuit in the drill.

A fluctuation in current on February 27th triggered a fault-protection response that immediately halted action by the rover during the mission’s 911th Martian day, or sol.

Since then, the rover team has avoided driving Curiosity or moving the rover’s arm, while engineers have focused on diagnostic tests. Science observations with instruments on the rover’s mast have continued, along with environmental monitoring by its weather station.

This March 4, 2015, image from the Navcam on NASA's Curiosity Mars rover shows the position in which the rover held its arm for several days after a transient short circuit triggered onboard fault-protection programming to halt arm activities on Feb. 27th. (NASA/JPL-Caltech/MSSS)

This March 4, 2015, image from the Navcam on NASA’s Curiosity Mars rover shows the position in which the rover held its arm for several days after a transient short circuit triggered onboard fault-protection programming to halt arm activities on Feb. 27th. (NASA/JPL-Caltech/MSSS)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA researchers study of Ionosphere may help improve GPS Communications

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – When you don’t know how to get to an unfamiliar place, you probably rely on a smart phone or other device with a Global Positioning System (GPS) module for guidance. You may not realize that, especially at high latitudes on our planet, signals traveling between GPS satellites and your device can get distorted in Earth’s upper atmosphere.

Researchers at NASA’s Jet Propulsion Laboratory, Pasadena, California, in collaboration with the University of New Brunswick in Canada, are studying irregularities in the ionosphere, a part of the atmosphere centered about 217 miles (350 kilometers) above the ground that defines the boundary between Earth and space.

The Aurora Borealis viewed by the crew of Expedition 30 on board the International Space Station. The sequence of shots was taken on February 7, 2012 from 09:54:04 to 10:03:59 GMT, on a pass from the North Pacific Ocean, west of Canada, to southwestern Illinois. (NASA/JSC)

The Aurora Borealis viewed by the crew of Expedition 30 on board the International Space Station. The sequence of shots was taken on February 7, 2012 from 09:54:04 to 10:03:59 GMT, on a pass from the North Pacific Ocean, west of Canada, to southwestern Illinois. (NASA/JSC)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Mars Curiosity Rover takes powder sample from rock at Telegraph Peak

 

Written by Guy Webster
NASA’ Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Curiosity Mars rover used its drill on Tuesday, February 24th to collect sample powder from inside a rock target called “Telegraph Peak.” The target sits in the upper portion of “Pahrump Hills,” an outcrop the mission has been investigating for five months.

The Pahrump Hills campaign previously drilled at two other sites. The outcrop is an exposure of bedrock that forms the basal layer of Mount Sharp. Curiosity’s extended mission, which began last year after a two-year prime mission, is examining layers of this mountain that are expected to hold records of how ancient wet environments on Mars evolved into drier environments.

This hole, with a diameter slightly smaller than a U.S. dime, was drilled by NASA's Curiosity Mars rover into a rock target called "Telegraph Peak." (NASA/JPL-Caltech/MSSS)

This hole, with a diameter slightly smaller than a U.S. dime, was drilled by NASA’s Curiosity Mars rover into a rock target called “Telegraph Peak.” (NASA/JPL-Caltech/MSSS)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Dawn spacecraft takes new pictures of dwarf planet Ceres

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Craters and mysterious bright spots are beginning to pop out in the latest images of Ceres from NASA’s Dawn spacecraft. These images, taken February 12th at a distance of 52,000 miles (83,000 kilometers) from the dwarf planet, pose intriguing questions for the science team to explore as the spacecraft nears its destination.

“As we slowly approach the stage, our eyes transfixed on Ceres and her planetary dance, we find she has beguiled us but left us none the wiser,” said Chris Russell, principal investigator of the Dawn mission, based at UCLA. “We expected to be surprised; we did not expect to be this puzzled.”

These two views of Ceres were acquired by NASA's Dawn spacecraft on Feb. 12, 2015, from a distance of about 52,000 miles (83,000 kilometers) as the dwarf planet rotated. The images have been magnified from their original size. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

These two views of Ceres were acquired by NASA’s Dawn spacecraft on Feb. 12, 2015, from a distance of about 52,000 miles (83,000 kilometers) as the dwarf planet rotated. The images have been magnified from their original size. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

«Read the rest of this article»

Sections: Technology | No Comments
 


Page 2 of 3112345...»

Personal Controls

Archives