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Rosetta’s comet has daily water-ice cycle
"We found a mechanism that replenishes the surface of the comet with fresh ice at every rotation. This keeps the comet 'alive'," said a researcher.
September 25, 2015
Milky Way’s black hole is more active!
The black hole at the Milky Way's heart recently blasted out 10 times its normal rate of X-ray flares. Is it due to the close passage of a mysterious, dusty object?
September 25, 2015
Supersonic stars reveal Milky Way’s heart
Harvard astronomers want to examine the radio waves from supersonic stars at the Milky Way's core, to learn more about this hidden region of space.
September 25, 2015
This date in science: India and Mars
Mars Orbiter Mission (MOM) is India's first interplanetary mission. It began orbiting Mars a year ago today. Mission goals - and spectacular images - here.
September 24, 2015
Watch an exoplanet orbit its star
A series of images has been made into a video, showing Beta Pictoris b moving through 18 months of its 22-year orbit around its star. Very cool!
September 22, 2015
Fact and fiction of Martian dust storms
Andy Weir’s book The Martian - soon to be released as a movie - begins with a huge dust storm that strands a fictional astronaut on Mars. Could it happen?
September 21, 2015
New tree of life for 2.3 million species
An initial draft, a collaborative effort from scientists at 11 institutions, of a new, comprehensive evolutionary tree of life. Plus ...
September 21, 2015
2015 wildfire season a record-breaker
Worst recorded years for U.S. wildfires are 2005, 2006, 2007, 2011 and 2012. This year has already joined that list, and wildfire season is still going strong.
September 21, 2015
Mercury rotates faster than expected
Analysis of data from the MESSENGER spacecraft reveals that, along with the sun, distant Jupiter may be influencing Mercury's orbit and spin.
September 19, 2015
Global ocean on Saturn moon Enceladus
Active water and ice geysers on Enceladus now are believed to spew from a planet-wide, liquid ocean beneath this moon's icy crust.
September 19, 2015
