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Topic: California Institute of Technology in Pasadena

NASA’s Opportunity Rover takes picture of ‘Wdowiak Ridge’ on Mars

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The latest fieldwork site for NASA’s Mars Exploration Rover Opportunity, which has been examining a series of Martian craters since 2004, is on the slope of a prominent hill jutting out of the rim of a large crater and bearing its own much smaller crater. It’s called “Wdowiak Ridge.”

“Wdowiak Ridge sticks out like a sore thumb. We want to understand why this ridge is located off the primary rim of Endeavour Crater and how it fits into the geologic story of this region,” said Opportunity science-team member Jim Rice of the Planetary Science Institute, Tucson, Arizona.

This vista from NASA's Mars Exploration Rover Opportunity shows "Wdowiak Ridge," from left foreground to center, as part of a northward look with the rover's tracks visible at right. (NASA/JPL-Caltech/Cornell Univ./Arizona State Univ)

This vista from NASA’s Mars Exploration Rover Opportunity shows “Wdowiak Ridge,” from left foreground to center, as part of a northward look with the rover’s tracks visible at right. (NASA/JPL-Caltech/Cornell Univ./Arizona State Univ)

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NASA’s Cassini Spacecraft was bathed in beam of electrons during flyby of Saturn’s moon Hyperion

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Static electricity is known to play an important role on Earth’s airless, dusty moon, but evidence of static charge building up on other objects in the solar system has been elusive until now.

A new analysis of data from NASA’s Cassini mission has revealed that, during a 2005 flyby of Saturn’s moon Hyperion, the spacecraft was briefly bathed in a beam of electrons coming from the moon’s electrostatically charged surface.

Cassini obtained this false-color view of Saturn's chaotically tumbling moon Hyperion during a flyby on Sept. 26, 2005. The spacecraft detected a strong electrostatic charge on the moon's surface, a first for any body other than Earth's moon. (NASA/JPL-Caltech/Space Science Institute)

Cassini obtained this false-color view of Saturn’s chaotically tumbling moon Hyperion during a flyby on Sept. 26, 2005. The spacecraft detected a strong electrostatic charge on the moon’s surface, a first for any body other than Earth’s moon. (NASA/JPL-Caltech/Space Science Institute)

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NASA reports Rosetta Spacecraft takes Selfie with Comet

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A camera aboard the European Space Agency’s Philae lander snapped this “selfie” of one of the Rosetta spacecraft’s 52-foot-long (16-meter) solar arrays, with comet 67P/Churyumov-Gerasimenko hovering in the background some 10 miles (16 kilometers) away.

The image, taken by the Comet Infrared and Visible Analyser (CIVA), was taken on October 7th. Philae, which is connected to the Rosetta orbiter at this time, will make its descent to the surface of the comet on November 12th.

A composite image from a camera on the Rosetta mission's Philae comet lander shows a solar array, with comet 67P/Churyumov-Gerasimenko in the background. (ESA/Rosetta/Philae/CIVA)

A composite image from a camera on the Rosetta mission’s Philae comet lander shows a solar array, with comet 67P/Churyumov-Gerasimenko in the background. (ESA/Rosetta/Philae/CIVA)

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NASA Scientists work with new material “Metallic Glasses” that can be molded like Plastic but retains strength of Metal

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Open a door and watch what happens — the hinge allows it to open and close, but doesn’t permanently bend. This simple concept of mechanical motion is vital for making all kinds of movable structures, including mirrors and antennas on spacecraft.

Material scientists at NASA’s Jet Propulsion Laboratory in Pasadena, California, are working on new, innovative methods of creating materials that can be used for motion-based mechanisms.

When a device moves because metal is flexing but isn’t permanently deformed, that’s called a compliant mechanism.

This image shows components of a mirror structure that can be rotated very precisely by flexing parts made of a material scientists call "bulk metallic glass." (NASA/JPL-Caltech)

This image shows components of a mirror structure that can be rotated very precisely by flexing parts made of a material scientists call “bulk metallic glass.” (NASA/JPL-Caltech)

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NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) finds brightest Dead Star every recorded

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have found a pulsating, dead star beaming with the energy of about 10 million suns. This is the brightest pulsar – a dense stellar remnant left over from a supernova explosion – ever recorded. The discovery was made with NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR.

“You might think of this pulsar as the ‘Mighty Mouse’ of stellar remnants,” said Fiona Harrison, the NuSTAR principal investigator at the California Institute of Technology in Pasadena. “It has all the power of a black hole, but with much less mass.”

The discovery appears in a new report in the Thursday, October 9th, issue of the journal Nature.

High-energy X-rays streaming from a rare and mighty pulsar (magenta), the brightest found to date, can be seen in this new image combining multi-wavelength data from three telescopes. (NASA/JPL-Caltech/SAO/NOAO)

High-energy X-rays streaming from a rare and mighty pulsar (magenta), the brightest found to date, can be seen in this new image combining multi-wavelength data from three telescopes. (NASA/JPL-Caltech/SAO/NOAO)

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NASA reports Rosetta Spacecraft’s target Comet begins Jet Activity

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The four images that make up a new montage of comet 67P/Churyumov-Gerasimenko were taken on September 26th, 2014 by the European Space Agency’s Rosetta spacecraft. At the time, Rosetta was about 16 miles (26 kilometers) from the center of the comet.

In the montage, a region of jet activity can be seen at the neck of the comet. These jets, originating from several discrete locations, are a product of ices sublimating and gases escaping from inside the nucleus.

An image taken by the ESA Rosetta spacecraft shows jets of dust and gas escaping from the nucleus of comet 67P/Churyumov-Gerasimenko. (ESA/Rosetta/NAVCAM)

An image taken by the ESA Rosetta spacecraft shows jets of dust and gas escaping from the nucleus of comet 67P/Churyumov-Gerasimenko. (ESA/Rosetta/NAVCAM)

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NASA’s Cassini Spacecraft finds giant Cloud circling south pole of Saturn’s moon Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists analyzing data from NASA’s Cassini mission have discovered that a giant, toxic cloud is hovering over the south pole of Saturn’s largest moon, Titan, after the atmosphere there cooled dramatically.

The scientists found that this giant polar vortex contains frozen particles of the toxic compound hydrogen cyanide, or HCN.

“The discovery suggests that the atmosphere of Titan’s southern hemisphere is cooling much faster than we expected,” said Remco de Kok of Leiden Observatory and SRON Netherlands Institute for Space Research, lead author of the study published today in the journal Nature.

These two views of Saturn's moon Titan show the southern polar vortex, a huge, swirling cloud that was first observed by NASA's Cassini spacecraft in 2012. (NASA/JPL-Caltech/ASI/University of Arizona/SSI/Leiden Observatory and SRON)

These two views of Saturn’s moon Titan show the southern polar vortex, a huge, swirling cloud that was first observed by NASA’s Cassini spacecraft in 2012. (NASA/JPL-Caltech/ASI/University of Arizona/SSI/Leiden Observatory and SRON)

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NASA’s Cassini spacecraft observes strange feature in sea on Saturn’s moon Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft is monitoring the evolution of a mysterious feature in a large hydrocarbon sea on Saturn’s moon Titan. The feature covers an area of about 100 square miles (260 square kilometers) in Ligeia Mare, one of the largest seas on Titan.

It has now been observed twice by Cassini’s radar experiment, but its appearance changed between the two apparitions.

These three images, created from Cassini Synthetic Aperture Radar (SAR) data, show the appearance and evolution of a mysterious feature in Ligeia Mare, one of the largest hydrocarbon seas on Saturn's moon Titan. (NASA/JPL-Caltech/ASI/Cornell)

These three images, created from Cassini Synthetic Aperture Radar (SAR) data, show the appearance and evolution of a mysterious feature in Ligeia Mare, one of the largest hydrocarbon seas on Saturn’s moon Titan. (NASA/JPL-Caltech/ASI/Cornell)

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NASA reports Rosetta Spacecraft to release Philae Lander to Comet’s surface November 12th

 

Written by DC Agle/Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The European Space Agency’s Rosetta mission will deploy its lander, Philae, to the surface of comet 67P/Churyumov-Gerasimenko on November 12th.

Rosetta is an international mission spearheaded by the European Space Agency with support and instruments provided by NASA.

Philae’s landing site, currently known as Site J, is located on the smaller of the comet’s two “lobes,” with a backup site on the larger lobe. The sites were selected just six weeks after Rosetta’s August 6th arrival at the comet, following the spacecraft’s 10-year journey through the solar system.

Image depicts the primary landing site on comet 67P/Churyumov-Gerasimenko chosen for the European Space Agency's Rosetta mission. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

Image depicts the primary landing site on comet 67P/Churyumov-Gerasimenko chosen for the European Space Agency’s Rosetta mission. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

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NASA’s Hubble, Spitzer and Kepler Telescopes discovers water vapor on Exoplanet outside our solar system

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers using data from three of NASA’s space telescopes — Hubble, Spitzer and Kepler — have discovered clear skies and steamy water vapor on a gaseous planet outside our solar system. The planet is about the size of Neptune, making it the smallest planet from which molecules of any kind have been detected.

“This discovery is a significant milepost on the road to eventually analyzing the atmospheric composition of smaller, rocky planets more like Earth,” said John Grunsfeld, assistant administrator of NASA’s Science Mission Directorate. “Such achievements are only possible today with the combined capabilities of these unique and powerful observatories.”

A Neptune-size planet with a clear atmosphere is shown crossing in front of its star in this artist's depiction. (NASA/JPL-Caltech)

A Neptune-size planet with a clear atmosphere is shown crossing in front of its star in this artist’s depiction. (NASA/JPL-Caltech)

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