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


Topic: University of Colorado

NASA’s Kepler Space Telescope provides additional data on system with 7 Earth Size Planets

 

Written by Michele Johnson
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – On February 22nd, astronomers announced that the ultra-cool dwarf star, TRAPPIST-1, hosts a total of seven Earth-size planets that are likely rocky, a discovery made by NASA’s Spitzer Space Telescope in combination with ground-based telescopes.

NASA’s planet-hunting Kepler space telescope also has been observing this star since December 2016. Today these additional data about TRAPPIST-1 from Kepler are available to the scientific community.

This illustration shows the seven TRAPPIST-1 planets as they might look as viewed from Earth using a fictional, incredibly powerful telescope. (NASA/JPL-Caltech)

This illustration shows the seven TRAPPIST-1 planets as they might look as viewed from Earth using a fictional, incredibly powerful telescope. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA to use Super Low Temperatures to slow Atoms for observation on International Space Station

 

Written by Andrew Good
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – This summer, an ice chest-sized box will fly to the International Space Station, where it will create the coolest spot in the universe.

Inside that box, lasers, a vacuum chamber and an electromagnetic “knife” will be used to cancel out the energy of gas particles, slowing them until they’re almost motionless. This suite of instruments is called the Cold Atom Laboratory (CAL), and was developed by NASA’s Jet Propulsion Laboratory in Pasadena, California. CAL is in the final stages of assembly at JPL, ahead of a ride to space this August on SpaceX CRS-12.

Its instruments are designed to freeze gas atoms to a mere billionth of a degree above absolute zero. That’s more than 100 million times colder than the depths of space.

Artist's concept of an atom chip for use by NASA's Cold Atom Laboratory (CAL) aboard the International Space Station. CAL will use lasers to cool atoms to ultracold temperatures. (NASA)

Artist’s concept of an atom chip for use by NASA’s Cold Atom Laboratory (CAL) aboard the International Space Station. CAL will use lasers to cool atoms to ultracold temperatures. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s MAVEN spacecraft makes adjustment to avoid Mars Moon Phobos

 

Written by Nancy Neal Jones
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s MAVEN spacecraft performed a previously unscheduled maneuver this week to avoid a collision in the near future with Mars’ moon Phobos.

The Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft has been orbiting Mars for just over two years, studying the Red Planet’s upper atmosphere, ionosphere and interactions with the sun and solar wind. On Tuesday, February 28th, the spacecraft carried out a rocket motor burn that boosted its velocity by 0.4 meters per second (less than 1 mile per hour).

This artist's sketch shows NASA's MAVEN spacecraft above Mars. (NASA)

This artist’s sketch shows NASA’s MAVEN spacecraft above Mars. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA’s Global Land Ice Velocity Extraction project provides near real time view of Glacier movement

 

Written by Kate Ramsayer
NASA Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Glaciers and ice sheets move in unique and sometimes surprising patterns, as evidenced by a new capability that uses satellite images to map the speed of flowing ice in Greenland, Antarctica and mountain ranges around the world.

With imagery and data from Landsat 8, a joint mission of NASA and the U.S. Geological Survey, scientists are providing a near-real-time view of every large glacier and ice sheet on Earth.

The NASA-funded Global Land Ice Velocity Extraction project, called GoLIVE, is a collaboration between scientists from the University of Colorado, the University of Alaska, and NASA’s Jet Propulsion Laboratory in Pasadena, California.

The texture on the surface of flowing ice, such as Heimdal Glacier in southern Greenland, allows Landsat 8 to map nearly all the flowing ice in the world. (NASA/John Sonntag)

The texture on the surface of flowing ice, such as Heimdal Glacier in southern Greenland, allows Landsat 8 to map nearly all the flowing ice in the world. (NASA/John Sonntag)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA researchers observe Arctic losing it’s older Sea Ice

 

Written by Maria-José Viñas
NASA’s Earth Science News Team

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Arctic sea ice, the vast sheath of frozen seawater floating on the Arctic Ocean and its neighboring seas, has been hit with a double whammy over the past decades: as its extent shrunk, the oldest and thickest ice has either thinned or melted away, leaving the sea ice cap more vulnerable to the warming ocean and atmosphere.

“What we’ve seen over the years is that the older ice is disappearing,” said Walt Meier, a sea ice researcher at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

Compare the extension of older sea ice in the Arctic in September 1984 and September 2016. The older ice is thicker and more resistant to melt than new ice, so it protects the sea ice cap during warm summers. In September 1984, there were 1.86 million square kilometers of old ice (5 years or older) left throughout the Arctic sea ice cap during its yearly minimum extent; in September 2016, there were only 110,000 square kilometers of older sea ice left. (NASA'S Scientific Visualization Studio)

Compare the extension of older sea ice in the Arctic in September 1984 and September 2016. The older ice is thicker and more resistant to melt than new ice, so it protects the sea ice cap during warm summers. In September 1984, there were 1.86 million square kilometers of old ice (5 years or older) left throughout the Arctic sea ice cap during its yearly minimum extent; in September 2016, there were only 110,000 square kilometers of older sea ice left. (NASA’S Scientific Visualization Studio)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Kepler Spacecraft discovers 104 Planets outside our Solar System

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – An international team of astronomers has discovered and confirmed a treasure trove of new worlds using NASA’s Kepler spacecraft on its K2 mission. Out of 197 initial planet candidates, scientists have confirmed 104 planets outside our solar system. Among the confirmed is a planetary system comprising four promising planets that could be rocky.

These four planets, all between 20 and 50 percent larger than Earth by diameter, are orbiting the M dwarf star K2-72, found 181 light-years away in the direction of the Aquarius constellation. The host star is less than half the size of the sun and less bright.

This artist's concept shows NASA's Kepler Space Telescope on its K2 mission. In July 2016, an international team of astronomers announced they had discovered more than 100 new planets using this telescope. (NASA/JPL-Caltech)

This artist’s concept shows NASA’s Kepler Space Telescope on its K2 mission. In July 2016, an international team of astronomers announced they had discovered more than 100 new planets using this telescope. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

Many drugs can cause or worsen heart failure, cautions new statement from American Heart Association

 

American Heart Association Scientific Statement

American Heart AssociationDallas, TX – Commonly used medications and nutritional supplements may cause or worsen heart failure, according to the first scientific statement from the American Heart Association to provide guidance on avoiding drug-drug or drug-condition interactions for people with heart failure.

The statement provides comprehensive information about specific drugs and “natural” remedies that may have serious unintended consequences for heart failure patients.

Patients with heart failure should consult with a health professional before starting or stopping any medication. (American Heart Association)

Patients with heart failure should consult with a health professional before starting or stopping any medication. (American Heart Association)

«Read the rest of this article»

Sections: News | No Comments
 


NASA’s Kepler Space Telescope discovers newly formed Exoplanet

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have discovered the youngest fully formed exoplanet ever detected. The discovery was made using NASA’s Kepler Space Telescope and its extended K2 mission, as well as the W. M. Keck Observatory on Mauna Kea, Hawaii. Exoplanets are planets that orbit stars beyond our sun.

The newfound planet, K2-33b, is a bit larger than Neptune and whips tightly around its star every five days. It is only 5 to 10 million years old, making it one of a very few newborn planets found to date.

K2-33b, shown in this illustration, is one of the youngest exoplanets detected to date. (NASA/JPL-Caltech)

K2-33b, shown in this illustration, is one of the youngest exoplanets detected to date. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Kepler space telescope data reveals insights into Planet Migration

 

Written by Steve Koppes
University of Chicago

NASA - National Aeronautics and Space AdministrationChicago, IL – The four planets of the Kepler-223 star system appeared to have little in common with the planets of our own solar system today. But a new study using data from NASA’s Kepler space telescope suggests a possible commonality in the distant past.

The Kepler-223 planets orbit their star in the same configuration that Jupiter, Saturn, Uranus and Neptune may have had in the early history of our solar system, before migrating to their current locations.

Sean Mills (left) and Daniel Fabrycky (right), researchers at the University of Chicago, describe the complex orbital structure of the Kepler-223 system in a new study. (Nancy Wong/University of Chicago)

Sean Mills (left) and Daniel Fabrycky (right), researchers at the University of Chicago, describe the complex orbital structure of the Kepler-223 system in a new study. (Nancy Wong/University of Chicago)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Kepler Space Telescope discovers biggest unnamed dwarf planet in our Solar System

 

Written by Michele Johnson
NASA’s Ames Research Center

NASA - National Aeronautics and Space AdministrationMoffett Field, CA – Dwarf planets tend to be a mysterious bunch. With the exception of Ceres, which resides in the main asteroid belt between Mars and Jupiter, all members of this class of minor planets in our solar system lurk in the depths beyond Neptune.

They are far from Earth – small and cold – which makes them difficult to observe, even with large telescopes. So it’s little wonder astronomers only discovered most of them in the past decade or so.

Pluto is a prime example of this elusiveness. Before NASA’s New Horizons spacecraft visited it in 2015, the largest of the dwarf planets had appeared as little more than a fuzzy blob, even to the keen-eyed Hubble Space Telescope.

New K2 results peg 2007 OR10 as the largest unnamed body in our solar system and the third largest of the current roster of about half a dozen dwarf planets. The dwarf planet Haumea has an oblong shape that is wider on its long axis than 2007 OR10, but its overall volume is smaller. (Konkoly Observatory/András Pál, Hungarian Astronomical Association/Iván Éder, NASA/JHUAPL/SwRI)

New K2 results peg 2007 OR10 as the largest unnamed body in our solar system and the third largest of the current roster of about half a dozen dwarf planets. The dwarf planet Haumea has an oblong shape that is wider on its long axis than 2007 OR10, but its overall volume is smaller. (Konkoly Observatory/András Pál, Hungarian Astronomical Association/Iván Éder, NASA/JHUAPL/SwRI)

«Read the rest of this article»

Sections: Technology | No Comments
 


Page 1 of 612345...»

  • Visit Us On FacebookVisit Us On TwitterVisit Us On GooglePlusVisit Us On PinterestVisit Us On YoutubeCheck Our Feed
  • Personal Controls

    Archives