May 30, 2018
A neutron star comes from a large star that has run out of fuel, and exploded as a supernova. First it becomes a radio pulsar and later becomes a magnetar. Or maybe it’s the other way around!
Apr 28, 2014
Two years ago, an intense solar storm narrowly missed Earth. If it had hit, researchers say, we could still be picking up the pieces.
Apr 26, 2014
Apr. 26, 2014: It's spring, and all around the northern hemisphere gardeners are planting seeds, tilling soil, and watering crops. Imagine a gardener's surprise, however, if water from the hose, instead of hitting the soil and sinking in, floated up to the sky. Or if the soil... Read More
Universe, Solar System
Apr 25, 2014
April 25, 2014: NASA's Wide-field Infrared Survey Explorer (WISE) and Spitzer Space Telescope have discovered what appears to be the coldest "brown dwarf" known -- a dim, star-like body that surprisingly is as frosty as Earth's North Pole. Named "WISE J085510.83-071442.5... Read More
Apr 25, 2014
A new life form is taking root on the ISS, and its name is "Outregeous." The space-faring lettuce was delivered to the space station by a SpaceX Dragon capsule on April 20th.
Universe, Solar System
Apr 17, 2014
April 17, 2014: Using NASA's Kepler Space Telescope, astronomers have discovered the first Earth-size planet orbiting in the "habitable zone" of another star. The planet, named "Kepler-186f" orbits an M dwarf, or red dwarf, a class of stars that makes up 70 percent of the stars... Read More
Apr 16, 2014
April 16, 2014: Earth's poles are separated by four oceans, six continents and more than 12,000 nautical miles. Turns out, that's not so far apart. New data from NASA's AIM spacecraft have revealed "teleconnections" in Earth's atmosphere that stretch all... Read More
Apr 14, 2014
April 14, 2014: NASA's Cassini spacecraft has documented the formation of a small icy object within the rings of Saturn. Informally named "Peggy," the object may be a new moon. Details of the observations were published online today by the journal Icarus.
Apr 11, 2014
NASA's AIM spacecraft is discovering unexpected "teleconnections" in Earth's atmosphere that link weather and climate across vast distances.
Apr 10, 2014
April 10, 2014: Consider a pair of brothers, identical twins. One gets a job as an astronaut and rockets into space. The other gets a job as an astronaut, too, but on this occasion he decides to stay home. After a year in space, the traveling twin returns... Read More
Apr 7, 2014
Next year, with the assistance of the world's only twin astronauts, NASA will conduct an unprecedented experiment in human biology. While one twin remains on the ground, the other will circle Earth onboard the International Space Station for a full year. Will the twins still be identical when... Read More
Apr 3, 2014
April 3, 2014: NASA's Cassini spacecraft and Deep Space Network have uncovered evidence that Saturn's moon Enceladus harbors a large underground ocean, furthering scientific interest in the moon as a potential home to extraterrestrial microbes.
Apr 1, 2014
April 1, 2014: A new study by researchers from the National Snow and Ice Data Center (NSIDC) and NASA shows that the length of the melt season for Arctic sea ice is growing by several days each decade. An earlier start to the melt season is allowing the Arctic Ocean to... Read More
Sun, Solar System
Mar 28, 2014
March 28, 2014: By the time you finish reading this story, you'll be about 1,000 km closer to the planet Mars. Earth and Mars are converging for a close encounter. As March gives way to April, the distance between the two planets is shrinking by about 300 km... Read More
Mar 27, 2014
Earth and Mars are converging for a close encounter in April, an event astronomers call "the opposition of Mars."