You can't survive a passage into a black hole ... or can you? A UC Berkeley mathematician says you could enter certain types of black holes, but your past would be obliterated and you'd have an infinite number of possible futures.
Astronomers assumed supermassive black holes and their host galaxies evolve together and affect each other. They call it "co-evolution." But it's not happening in the distant galaxy WISE1029.
The long-lived Opportunity Mars rover keeps finding surprises, including these possible stone stripes. On Earth, similar features result from repeated freezing and thawing of wet soil.
Supernovae - exploding stars - are unpredictable. But an amateur astronomer in Argentina happened to catch one just as it began to explode. "It's like winning the cosmic lottery," one astronomer said.
In the 1980s, Voyager 2 discovered a dark storm in Neptune's dense atmosphere, and now the Hubble Space Telescope is tracking Neptune's storms. More in this NASA video.
For decades, astronomers have been talking about of galaxies with supermassive black holes at their cores. Now they say they've clearly confirmed a black hole's encircling, dusty, spinning disk of gas.