Science

When a city-size star becomes a black hole's lunch, the universe roils
It's a smackdown of one space monster by another: Scientists have made unprecedented observations of two black holes gobbling two neutron stars — among the weirdest space collisions ever detected.
Yellow crazy ants, an enemy to seabirds, have been wiped out on a remote Pacific atoll
After more than a decade, the terrorizing reign of the yellow crazy ant is over on the Johnston Atoll National Wildlife Refuge. The invasive insect had been threatening ground-nesting seabirds on the Pacific atoll since at least 2010.
UFO report: No sign of aliens, but 143 mystery objects defy explanation
A U.S. government report on UFOs, released Friday, said it found no evidence of aliens, but acknowledged 143 reports of "unidentified aerial phenomena" since 2004 that could not be explained.
Potentially, observers in plenty of star systems could have detected Earth sometime in the last 5,000 years. More stars will soon move into positions that would let them see our planet.
Hubble trouble: NASA can't figure out what's causing computer issues on the telescope
"It's just the inefficiency of trying to fix something which is orbiting 400 miles over your head instead of in your laboratory," said Paul Hertz, the director of astrophysics for NASA.