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Puzzling X-rays in Perseus might point to dark matter
Astronomers have detected a mysterious X-ray anomaly that might be a signal of dark matter, the elusive, invisible stuff that makes up most of our universe.
June 25, 2014
Monster black hole trio discovered in distant galaxy
Researchers have discovered a distant galaxy with not one, but three supermassive black holes at its center.
June 25, 2014
Earth-sized diamond in space is coolest white dwarf star
The coldest, dimmest white dwarf star ever detected is so cool that its carbon has crystallized, forming - in effect - an Earth-sized diamond in space.
June 24, 2014
Should the Higgs boson have caused our universe to collapse?
British cosmologists have concluded that the universe should not have lasted for more than a second after the Big Bang.
June 24, 2014
Winners of International Earth & Sky Photo Contest!
This year's winners were selected from images taken in 55 countries during 2013 and 2014.
June 20, 2014
Rosetta spacecraft sees target comet wake up, then go quiet again
An April 2014 image of Comet 67P/Churyumov-Gerasimenko showed activity, as the comet nears the sun. But a June 4 image shows the comet has quieted again.
June 19, 2014
International Space Station sends a laser message from space
On June 5, astronauts aboard ISS used a beam of laser light to send an HD video to researchers waiting below.
June 19, 2014
Hubble Space Telescope to seek spacecraft target beyond Pluto
NASA okays the use of the Hubble Space Telescope in the search for an object the New Horizons spacecraft can visit after its Pluto encounter in 2015.
June 16, 2014
Physicist and artist unveil designs for warp-speed spacecraft
The technology needed to create a faster-than-light spacecraft doesn't exist yet. Will a spacecraft like this one someday carry humans to the stars?
June 16, 2014
Mercury passing in front of the sun, seen from Mars
Transit of planet Mercury across the sun on June 3, as seen from Mars by a camera on the Curiosity rover.
June 11, 2014
