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NASA's Great Observatories Celebrate International Year of Astronomy
In celebration of this International Year of Astronomy, NASA is releasing images of the galactic center region as seen by its Great Observatories to more than 150 planetariums, museums, nature centers...
Physics and Astronomy |
Read moreStarburst galaxy sheds light on longstanding cosmic mystery
The gamma rays observed by the team have energies more than a trillion times higher than the energy of visible light and are the highest-energy photons ever detected from a galaxy undergoing large amo...
Physics and Astronomy | Read moreNASA's Fermi Telescope Detects Gamma-Rays From "Star Factories" in Other Galaxies
"Starburst galaxies have not been accessible in gamma rays before," said Fermi team member Seth Digel, a physicist at SLAC National Accelerator Laboratory in Menlo Park, Calif. "Most of...
Physics and Astronomy | Read moreSatellite reveals surprising cosmic 'weather' at edge of solar system
"Nature is full of surprises, and IBEX has been lucky to discover one of those surprises," said Priscilla Frisch, a senior scientist in astronomy & astrophysics at the University of Chicago....
Physics and Astronomy | Read moreUNH space scientists help catch the interstellar wind
The mission launched October 19, 2008 and carries two, ultra-high sensitivity, cameras containing important components designed and built at UNH. From a highly elliptical Earth orbit the IBEX satellit...
Physics and Astronomy | Read moreThe Protecting Cocoon of the Solar System: NASA Mission discovers unexpected structures
The solar wind engulves our solar system like a cocoon: This continuous plasma flow that emanates from the Sun is protecting us from the interstellar medium, especially from the cosmic rays. The bound...
Physics and Astronomy | Read moreCosmic Rays Hit Space Age High
"In 2009, cosmic ray intensities have increased 19% beyond anything we've seen in the past 50 years," says Richard Mewaldt of Caltech. "The increase is significant, and it could me...
Physics and Astronomy | Read moreNew Vista of Milky Way Center Unveiled
Permeating the region is a diffuse haze of X-ray light from gas that has been heated to millions of degrees by winds from massive young stars – which appear to form more frequently here than elsewhere...
Physics and Astronomy | Read moreFermi Large Area Telescope reveals pulsing gamma-ray sources
Using the Large Area Telescope (LAT), the primary instrument on NASA's Fermi Gamma-ray Space Telescope satellite, the discoveries were made by conducting blind frequency searches on the sparse ph...
Physics and Astronomy | Read moreIs the Milky Way doomed to be destroyed by galactic bombardment? Probably not, study says
That grisly fate is unlikely, a new study now suggests.While astronomers know that such collisions have probably occurred in the past, the new computer simulations show that instead of destroy...
Physics and Astronomy | Read moreCosmic dance helps galaxies lose weight
Dwarf spheroidal galaxies are small and very faint, containing few stars relative to their total mass. They appear to be made mostly of dark matter - a mysterious substance detectable only by its grav...
Studies and Analyses | Read moreApollo 11 Moon Rocks Still Crucial 40 Years Later
And he credits another WUSTL professor for the fact that the astronauts even collected the moon rocks in the first place.Randy L. Korotev, Ph.D., a research professor in the Department of Eart...
Physics and Astronomy | Read moreTurbulence responsible for black holes' balancing act
We live in a hierarchical Universe where small structures join into larger ones. Earth is a planet in our Solar System, the Solar System resides in the Milky Way Galaxy, and galaxies combine into grou...
Physics and Astronomy | Read moreTurbulence responsible for black holes' balancing act
We live in a hierarchical Universe where small structures join into larger ones. Earth is a planet in our Solar System, the Solar System resides in the Milky Way Galaxy, and galaxies combine into grou...
Physics and Astronomy | Read moreAstrophysicists Solve Mystery in Milky Way Galaxy
In two separate scientific papers, the most recent of which appears in the July 10 issue of the journal Physical Review Letters, the astrophysicists show that this distribution of gamma rays can be ex...
Physics and Astronomy | Read more
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