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Tiny, but still densest known galaxies
Smaller in width than our Milky Way, their stars are packed 10,000 to a million times more densely than in our sun's neighborhood. Imagine the night sky!
July 27, 2015
Latest images of Pluto’s flowing ice
Latest images from NASA's July 14, 2015 flyby of Pluto by the New Horizons spacecraft, showing evidence of an active surface on Pluto with flowing nitrogen ice.
July 27, 2015
Pulsar punches hole in stellar disk
Two stars in a double system are not playing nice. One star, a pulsar, has punched a hole in the disk of the other, sending debris outward at 7% of light speed!
July 26, 2015
Kepler-452b is older, bigger Earth cousin
The Kepler mission has confirmed the first near-Earth-size planet in the habitable zone - or zone where liquid water can exist - around a sunlike star.
July 23, 2015
What black holes like to eat
Astronomers have caught a monster black hole in the act of eating a star. But, they say, stars are not standard fare for black holes.
July 23, 2015
More ice mountains in Pluto’s heart
A second range of ice mountains has been found on Pluto, in images from New Horizons.
July 22, 2015
Closest views yet of Nix and Hydra
Pluto has five known moons, and it's a bit surprising that New Horizons hasn't found any new ones yet. Newly released images show small moons Nix and Hydra.
July 22, 2015
Philae comet lander falls silent
The Rosetta team is hoping that a software patch will help re-establish reliable contact with the little Philae lander, lodged somewhere on the comet's surface.
July 20, 2015
Unprecedented $100 million to SETI
Breakthrough Listen initiative, announced Monday, will scan the nearest million stars, plus stars in 100 other galaxies, for signs of an advanced civilization.
July 20, 2015
