Ralph Waldo Emerson once penned the words “If the stars should appear one night in a thousand years, how would men believe ...

NASA has discovered an interstellar comet that's wandered into our backyard. Luckily, it won't get near enough to be a threat ...

The venture, privately funded to start, is now run by the University of Arizona. And today, scientists there are quietly ...

The CRIRES+ instrument on the European Southern Observatory’s Very Large Telescope (ESO’s VLT) has been used to measure the ...

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

University of Arizona astrophysicist Erika Hamden takes readers on a romp through a "Weird Universe" in her debut popular ...

CAPE CANAVERAL, Fla. (AP) — NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency ...

The U.S. Geological Survey’s office building in Hilo also is the temporary home of the agency’s Hawaiian Volcano Observatory, which for more than 100 years has been tracking the movements of ...