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Showing results 151 - 160 of 236
Seyfert galaxies
Radio Telescopes Reveal Unseen Galactic Cannibalism
June 23, 2008 at 3:58 pm | News Release

Radio-telescope images have revealed previously-unseen galactic cannibalism — a triggering event that leads to feeding frenzies by gigantic black holes at the cores of galaxies.

SN 2007uy and NGC 2770 before SN 2008D exploded
Luck Reveals Stellar Explosion’s First Moments
May 21, 2008 at 3:41 pm | News Release

Through a stroke of luck, astronomers have witnessed the first violent moments of a stellar explosion known as a supernova.

VLA Images of G1.9+0.3 in 1985 and 2008
Youngest Stellar Explosion in Our Galaxy Discovered
May 14, 2008 at 3:20 pm | News Release

Astronomers have found the remains of the youngest supernova, or exploded star, in our Galaxy.

Very Large Array Retooling for 21st-Century Science
Very Large Array Retooling for 21st-Century Science
February 18, 2008 at 3:07 pm | Announcement

An international project to make the world’s most productive ground-based telescope 10 times more capable has reached its halfway mark and is on schedule to provide astronomers with an extremely powerful new tool for exploring the Universe.

IC2575
New VLA Images Unlocking Galactic Mysteries
January 10, 2008 at 2:49 pm | News Release

Astronomers have produced a scientific gold mine of detailed, high-quality images of nearby galaxies that is yielding important new insights into many aspects of galaxies, including their complex structures, how they form stars, the motions of gas in the galaxies, the relationship of normal matter to unseen dark matter, and many others.

Graphic showing the "Hole in the Universe"
Astronomers Find Enormous Hole in the Universe
August 23, 2007 at 7:17 pm | News Release

Astronomers have found an enormous hole in the Universe, nearly a billion light-years across, empty of both normal matter such as stars, galaxies, and gas, and the mysterious, unseen dark matter.

NRAO Teams With NASA Gamma-Ray Satellite
NRAO Teams With NASA Gamma-Ray Satellite
June 5, 2007 at 6:42 pm | Announcement

The National Radio Astronomy Observatory is teaming with NASA’s upcoming Gamma-ray Large Area Space Telescope to allow astronomers to use both the orbiting facility and ground-based radio telescopes to maximize their scientific payoff.

The VLA
Star Cluster Holds Midweight Black Hole, VLA Indicates
May 28, 2007 at 6:32 pm | News Release

Astronomers using the National Science Foundation’s Very Large Array radio telescope have greatly strengthened the case that supermassive black holes at the cores of galaxies may have formed through mergers of smaller black holes.

NGC 5291
Missing Mass Found in Recycled Dwarf Galaxies
May 10, 2007 at 6:27 pm | News Release

Astronomers studying dwarf galaxies formed from the debris of a collision of larger galaxies found the dwarfs much more massive than expected, and think the additional material is missing mass that theorists said should not be present in this kind of dwarf galaxy.

Artist's conception of "mini-aurorae" at poles of brown dwarf
Brown Dwarfs: A New Class of Stellar Lighthouse
April 17, 2007 at 6:16 pm | News Release

Brown dwarfs, thought just a few years ago to be incapable of emitting any significant amounts of radio waves, have been discovered putting out extremely bright lighthouse beams of radio waves, much like pulsars.

Showing results 151 - 160 of 236