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


Topic: NASA’s Jet Propulsion Laboratory

NASA’s Mars Curiosity Rover set to drill into Mineral Crystal Rock on Mars

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A rock target where NASA’s Curiosity Mars rover is using its sample-collection drill this week may have a salty story to tell.

This target, called “Mojave,” displays copious slender features, slightly smaller than grains of rice, that appear to be mineral crystals. A chance to learn their composition prompted the Curiosity science team to choose Mojave as the next rock-drilling target for the 29-month-old mission investigating Mars’ Gale Crater. The features might be a salt mineral left behind when lakewater evaporated.

This week, Curiosity is beginning a “mini-drill” test to assess the rock’s suitability for deeper drilling, which collects a sample for onboard laboratory analysis.

This view from the wide-angle Hazard Avoidance Camera on the front of NASA's Curiosity Mars Rover shows the rover's drill in position for a mini-drill test to assess whether a rock target called "Mojave" is appropriate for full-depth drilling to collect a sample. (NASA/JPL-Caltech)

This view from the wide-angle Hazard Avoidance Camera on the front of NASA’s Curiosity Mars Rover shows the rover’s drill in position for a mini-drill test to assess whether a rock target called “Mojave” is appropriate for full-depth drilling to collect a sample. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Near Earth Object Program reports Asteroid to Safely Fly By on January 26th, 2015

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – An asteroid, designated 2004 BL86, will safely pass about three times the distance of Earth to the moon on January 26th. From its reflected brightness, astronomers estimate that the asteroid is about a third of a mile (0.5 kilometers) in size.

The flyby of 2004 BL86 will be the closest by any known space rock this large until asteroid 1999 AN10 flies past Earth in 2027.

At the time of its closest approach on January 26th, the asteroid will be approximately 745,000 miles (1.2 million kilometers) from Earth.

This graphic depicts the passage of asteroid 2004 BL86, which will come no closer than about three times the distance from Earth to the moon on Jan. 26th, 2015. Due to its orbit around the sun, the asteroid is currently only visible by astronomers with large telescopes who are located in the southern hemisphere. But by Jan. 26th, the space rock's changing position will make it visible to those in the northern hemisphere. (NASA/JPL-Caltech)

This graphic depicts the passage of asteroid 2004 BL86, which will come no closer than about three times the distance from Earth to the moon on Jan. 26th, 2015. Due to its orbit around the sun, the asteroid is currently only visible by astronomers with large telescopes who are located in the southern hemisphere. But by Jan. 26th, the space rock’s changing position will make it visible to those in the northern hemisphere. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA reports Astronomers now using Machines to learn about Stars

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers are enlisting the help of machines to sort through thousands of stars in our galaxy and learn their sizes, compositions and other basic traits.

The research is part of the growing field of machine learning, in which computers learn from large data sets, finding patterns that humans might not otherwise see. Machine learning is in everything from media-streaming services that predict what you want to watch, to the post office, where computers automatically read handwritten addresses and direct mail to the correct zip codes.

Astronomers have turned to a method called "machine learning" to help them understand the properties of large numbers of stars. (NASA/JPL-Caltech)

Astronomers have turned to a method called “machine learning” to help them understand the properties of large numbers of stars. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s SMAP instrument ready to measure Earth’s Soil Moisture

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A new NASA satellite that will peer into the topmost layer of Earth’s soils to measure the hidden waters that influence our weather and climate is in final preparations for a January 29th dawn launch from California.

The Soil Moisture Active Passive (SMAP) mission will take the pulse of a key measure of our water planet: how freshwater cycles over Earth’s land surfaces in the form of soil moisture.

The mission will produce the most accurate, highest-resolution global maps ever obtained from space of the moisture present in the top 2 inches (5 centimeters) of Earth’s soils.

Artist's rendering of the SMAP instrument. (NASA)

Artist’s rendering of the SMAP instrument. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA reports Saturn and it’s system of Moons mapped with high accuracy

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists have paired NASA’s Cassini spacecraft with the National Science Foundation’s Very Long Baseline Array (VLBA) radio-telescope system to pinpoint the position of Saturn and its family of moons to within about 2 miles (4 kilometers).

The measurement is some 50 times more precise than those provided by ground-based optical telescopes. The feat improves astronomers’ knowledge of Saturn’s orbit and benefits spacecraft navigation and basic physics research.

Researchers have determined the location of the Saturn system's center of mass to within just a couple of miles (or kilometers), a factor of 50 improvement over previous knowledge. (NASA/JPL/Space Science Institute)

Researchers have determined the location of the Saturn system’s center of mass to within just a couple of miles (or kilometers), a factor of 50 improvement over previous knowledge. (NASA/JPL/Space Science Institute)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Mars Opportunity Rover reaches highest point of it’s career on Mars

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – After completing two drives this week, NASA’s Mars Exploration Rover Opportunity has paused to photograph the panoramic vista from the highest point the rover has reached during its 40 months of exploring the western rim of Mars’ Endeavour Crater.

The view is one of the grandest in Opportunity’s Martian career of nearly 11 years and more than 25.8 miles (41.6 kilometers).

The rover has been having trouble with a section of its flash memory, the type of memory that can store data even when power is switched off.

NASA's Mars Exploration Rover Opportunity recorded this view of the summit of "Cape Tribulation," on the western rim of Endeavour Crater on the day before the rover drove to the top. This crest is about 440 feet higher in elevation than the plain surrounding the crater. (NASA/JPL-Caltech)

NASA’s Mars Exploration Rover Opportunity recorded this view of the summit of “Cape Tribulation,” on the western rim of Endeavour Crater on the day before the rover drove to the top. This crest is about 440 feet higher in elevation than the plain surrounding the crater. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA reports possible Black Hole Merger

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The central regions of many glittering galaxies, our own Milky Way included, harbor cores of impenetrable darkness — black holes with masses equivalent to millions, or even billions, of suns.

What’s more, these supermassive black holes and their host galaxies appear to develop together, or “co-evolve.” Theory predicts that as galaxies collide and merge, growing ever more massive, so too do their dark hearts.

An artist's conception of a black hole binary in a heart of a quasar, with the data showing the periodic variability superposed. (Santiago Lombeyda, Center for Data-Driven Discovery, Caltech)

An artist’s conception of a black hole binary in a heart of a quasar, with the data showing the periodic variability superposed. (Santiago Lombeyda, Center for Data-Driven Discovery, Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Kepler Space Telescope discovers it’s 1,000th Exoplanet

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – How many stars like our sun host planets like our Earth? NASA’s Kepler Space Telescope continuously monitored more than 150,000 stars beyond our solar system, and to date has offered scientists an assortment of more than 4,000 candidate planets for further study — the 1,000th of which was recently verified.

Using Kepler data, scientists reached this millenary milestone after validating that eight more candidates spotted by the planet-hunting telescope are, in fact, planets. The Kepler team also has added another 554 candidates to the roll of potential planets, six of which are near-Earth-size and orbit in the habitable zone of stars similar to our sun.

Of the more than 1,000 verified planets found by NASA's Kepler, eight are less than twice Earth-size and in their stars' habitable zone. All eight orbit stars cooler and smaller than our sun. The search continues for Earth-size habitable zone worlds around sun-like stars. (NASA Ames/W Stenzel)

Of the more than 1,000 verified planets found by NASA’s Kepler, eight are less than twice Earth-size and in their stars’ habitable zone. All eight orbit stars cooler and smaller than our sun. The search continues for Earth-size habitable zone worlds around sun-like stars. (NASA Ames/W Stenzel)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA study shows Tropical Forests may remove more Carbon Dioxide from Atmosphere than expected

 

Written by Carol Rasmussen
NASA Earth Science News Team

NASA - National Aeronautics and Space AdministrationPasadena, CA – A new NASA-led study shows that tropical forests may be absorbing far more carbon dioxide than many scientists thought, in response to rising atmospheric levels of the greenhouse gas.

The study estimates that tropical forests absorb 1.4 billion metric tons of carbon dioxide out of a total global absorption of 2.5 billion — more than is absorbed by forests in Canada, Siberia and other northern regions, called boreal forests.

A new NASA study suggests that tropical forests, like this one in Malaysia, absorb more atmospheric carbon dioxide than is absorbed by forests in Alaska, Canada and Siberia. (Wikimedia Commons)

A new NASA study suggests that tropical forests, like this one in Malaysia, absorb more atmospheric carbon dioxide than is absorbed by forests in Alaska, Canada and Siberia. (Wikimedia Commons)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Soil Moisture Active Passive (SMAP) instrument to be launched into space in January

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – It’s active. It’s passive. And it’s got a big, spinning lasso.

Scheduled for launch on January 29th, 2015, NASA’s Soil Moisture Active Passive (SMAP) instrument will measure the moisture lodged in Earth’s soils with an unprecedented accuracy and resolution. The instrument’s three main parts are a radar, a radiometer and the largest rotating mesh antenna ever deployed in space.

Remote sensing instruments are called “active” when they emit their own signals and “passive” when they record signals that already exist.

NASA's Soil Moisture Active Passive (SMAP) instrument to be launched into space in January

NASA’s Soil Moisture Active Passive (SMAP) instrument to be launched into space in January

«Read the rest of this article»

Sections: Technology | No Comments
 


Page 2 of 7412345...»

Personal Controls

Archives