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Distant planet has four suns
Were it possible to see the skies from this world, the four parent stars would look like one small sun and two very bright stars visible in the daylight.
March 7, 2015
Mars lost ocean of water to space
About 4 billion years ago, a primitive ocean on Mars held more water than Earth's Arctic Ocean, say researchers, but Mars has lost 87 percent of it to space.
March 7, 2015
How often does a solar eclipse happen on the March equinox?
A total solar eclipse happened on the day of the March equinox in 2015. When is the next one after this, and how often do we get an equinox-eclipse?
March 7, 2015
Dawn spacecraft arrives at Ceres!
The Dawn spacecraft has made history. It has become the first mission to visit a dwarf planet when it successfully slipped into Ceres' orbit on March 6.
March 6, 2015
Methane-based lifeforms on Saturn’s moon?
Scientists offer a template for life that could thrive in the harsh, cold world of Titan, the giant moon of Saturn. It’s not life as we know it.
March 3, 2015
Rosetta spacecraft glimpses its own shadow
It's a spacecraft shadow on a comet! Rosetta caught its own shadow encircled in a wreath of light, on the icy surface of Comet 67P/Churyumov-Gerasimenko.
March 3, 2015
Missed the spacewalks? Here’s video, photos
On Sunday, NASA astronauts completed their third spacewalk in eight days. Cool video and gorgeous pics from the trio of spacewalks.
March 2, 2015
Touching NASA tributes to Leonard Nimoy’s passing
Nimoy’s character Mr. Spock on Star Trek inspired generations of astronauts, space scientists and engineers, as well as space fans around the globe.
March 2, 2015
Monster black hole at cosmic dawn
A black hole 12 billion times more massive than our sun - at the heart of the brightest quasar in the early universe - as the dark ages of the universe were just ending.
February 27, 2015
Another breathtaking view of Comet Lovejoy
The comet was 51 million miles from Earth at the time – a short distance for the Dark Energy Camera, which is sensitive to light 8 billion light-years away.
February 27, 2015
