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Supermassive black hole is serial exploder
Astronomers see cavities - like giant bubbles - in hot gas around galaxy cluster NGC 5813, caused by multiple eruptions over millions of years of a black hole.
June 16, 2015
Don’t miss jaw-dropping Venus/Jupiter encounter
Venus and Jupiter are converging for a must-see close encounter at the end of June. It could be the best backyard sky show of 2015.
June 15, 2015
Cosmic ray observatory to explore hotspot
Utah scientists propose an expansion for their cosmic ray observatory, to speed up studies of a mysterious source of ultrahigh-energy cosmic rays.
June 15, 2015
Philae comet lander is awake!
Seven months after it lost contact with Earth, the Rosetta mission's Philae lander hibernating on comet 67P has woken up and tweeted, "Hello Earth!"
June 15, 2015
New map confirms 4 Milky Way arms
Although we can't see it from the outside, astronomers know our galaxy has an overall spiral structure. For years, they've been trying to pin down the number of Milky Way spiral arms. Now they say ... 4.
June 14, 2015
Faces of Pluto emerge in new images
As the New Horizons spacecraft speeds closer to its July flight through the Pluto system, we're seeing an increasingly complex surface. Best views yet.
June 12, 2015
Is the universe really accelerating?
New research questions the claim that the universe is accelerating. But this new work isn't as strong as some claim.
June 10, 2015
Latest image of Ceres bright spots
Scientists are having fun contemplating the spots along with the rest of us. NASA wants you to vote on what you think the spots might be.
June 10, 2015
Will Mars glass reveal life signs?
NASA spacecraft discovered deposits of impact glass preserved in Martian craters, possibly preserving ancient signs of life.
June 9, 2015
Video: Fine dining in microgravity
An astronaut aboard the ISS prepares one of her favorite meals - quinoa salad with tomato, mackerel and leek cream in a warm tortilla. Here's how it's done in space.
June 9, 2015
