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The Cheshire Cat group of galaxies
A lot of dark matter lies between us and these distant galaxies. Light distortion from gravitational lensing creates the "cat."
November 23, 2015
Day on Pluto, day on Charon
Best currently available images of Pluto and Charon - taken during New Horizons' flyby - combined to create a view of a full rotation of each of these worlds.
November 23, 2015
El Niño déjà vu or something new?
NASA scientists weigh in on whether this year's El Niño will rival the monster El Niño of 1997-98.
November 23, 2015
A nearby dark matter galaxy?
Measurements of the velocities of just six stars in a galaxy of only 1,000 visible stars suggest the highest concentration of dark matter of any known galaxy. Holy grail? Or is there another explanation?
November 22, 2015
Hole-punch cloud over Massachusetts
Hole-punch clouds are sometimes called fallstreak holes. They are often-circular patches of clear sky, surrounded by clouds. Airplanes create them.
November 22, 2015
Report from Zimbabwe: Second rain
More than two weeks after the first rain of the season, another rainfall. Peter Lowenstein in Mutare, Zimbabwe reports.
November 21, 2015
Tiny, ultracool star is super stormy
"If we lived around a star like this one, we wouldn't have any satellite communications. In fact, it might be extremely difficult for life to evolve at all ..." said Harvard astrophysicist.
November 20, 2015
Texas telescope to explore dark energy
A mysterious and largely unknown dark energy is thought to pervade our universe. A telescope in West Texas is poised to survey a million galaxies, to explore it.
November 20, 2015
Eastern coyote’s a hybrid, but ‘coywolf’ is not a thing
There’s a hybrid canid living in the eastern US, the result of an amazing evolution story unfolding right in front of us. But it’s not a new species – yet - says biologist.
November 20, 2015
How a year in space changes bodies
Astronauts are spending a year aboard the International Space Station, and researchers are looking at what happens to their bodies at the molecular level.
November 20, 2015
