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Topic: NASA’s WISE Spacecraft

NASA Data used by Citizen Scientists to find several Brown Dwarfs

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – We’ve never met some of the Sun’s closest neighbors until now. In a new study, astronomers report the discovery of 95 objects known as brown dwarfs, many within a few dozen light-years of the Sun.

They’re well outside the solar system, so don’t experience heat from the Sun, but still inhabit a region astronomers consider our cosmic neighborhood. This collection represents some of the coldest known examples of these objects, which are between the sizes of planets and stars.

In this illustration, the small white orb represents a white dwarf (a remnant of a long-dead Sun-like star), while the foreground object is its newly discovered brown dwarf companion, spotted by citizen scientists working with a NASA-funded project called Backyard Worlds: Planet 9. (NOIRLab/NSF/AURA/P. Marenfeld/Acknowledgement: William Pendrill)

In this illustration, the small white orb represents a white dwarf (a remnant of a long-dead Sun-like star), while the foreground object is its newly discovered brown dwarf companion, spotted by citizen scientists working with a NASA-funded project called Backyard Worlds: Planet 9. (NOIRLab/NSF/AURA/P. Marenfeld/Acknowledgement: William Pendrill)

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NASA Space Telescopes discover Three Black Holes on Collision Course

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA says astronomers have spotted three giant black holes within a titanic collision of three galaxies. The unusual system was captured by several observatories, including three NASA space telescopes.

“We were only looking for pairs of black holes at the time, and yet, through our selection technique, we stumbled upon this amazing system,” said Ryan Pfeifle of George Mason University in Fairfax, Virginia, the first author of a new paper in The Astrophysical Journal describing these results. “This is the strongest evidence yet found for such a triple system of actively feeding supermassive black holes.”

X-ray. (NASA/CXC/George Mason Univ./R. Pfeifle et al.; Optical: SDSS & NASA/STScI)

X-ray. (NASA/CXC/George Mason Univ./R. Pfeifle et al.; Optical: SDSS & NASA/STScI)

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NASA study discovers Galaxy that is devouring it’s smaller neighbors

 

NASA Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The most luminous galaxy ever discovered is cannibalizing not one, not two, but at least three of its smaller neighbors, according to a new study published today (November 15th) in the journal Science and coauthored by scientists from NASA’s Jet Propulsion Laboratory in Pasadena, California. The material that the galaxy is stealing from its neighbors is likely contributing to its uber-brightness, the study shows.

Discovered by NASA’s space-based Wide-field Infrared Survey Explorer (WISE) in 2015, the galaxy, called WISE J224607.55-052634.9, is by no means the largest or most massive galaxy we know of, but it radiates at 350 trillion times the luminosity of the Sun.

This artist's impression shows galaxy WISE J224607.55-052634.9, the most luminous galaxy ever discovered. A new study using data from the Atacama Large Millimeter/submillimeter Array (ALMA) shows that this galaxy is syphoning dust and other material from three of its smaller galactic neighbors. )(NRAO/AUI/NSF) S. Dagnello)

This artist’s impression shows galaxy WISE J224607.55-052634.9, the most luminous galaxy ever discovered. A new study using data from the Atacama Large Millimeter/submillimeter Array (ALMA) shows that this galaxy is syphoning dust and other material from three of its smaller galactic neighbors. )(NRAO/AUI/NSF) S. Dagnello)

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NASA’s WISE spacecraft reveals nearly five times more comets have passed the Sun then previously predicted

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Comets that take more than 200 years to make one revolution around the Sun are notoriously difficult to study. Because they spend most of their time far from our area of the solar system, many “long-period comets” will never approach the Sun in a person’s lifetime.

In fact, those that travel inward from the Oort Cloud — a group of icy bodies beginning roughly 186 billion miles (300 billion kilometers) away from the Sun — can have periods of thousands or even millions of years.

NASA’s WISE spacecraft, scanning the entire sky at infrared wavelengths, has delivered new insights about these distant wanderers.

This illustration shows how scientists used data from NASA's WISE spacecraft to determine the nucleus sizes of comets. They subtracted a model of how dust and gas behave in comets in order to obtain the core size. (NASA/JPL-Caltech)

This illustration shows how scientists used data from NASA’s WISE spacecraft to determine the nucleus sizes of comets. They subtracted a model of how dust and gas behave in comets in order to obtain the core size. (NASA/JPL-Caltech)

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