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Solar Minimum is Coming Poster
Sun, Our Sun, Earth’s Space Environment
Jun 27, 2017
Intense solar activity such as sunspots and solar flares subsides during solar minimum, but that doesn’t mean the sun becomes dull. Solar activity simply changes form.
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
ISS
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
ScienceCasts: Unexpected Teleconnections in Noctilucent Clouds
Solar System
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.
Earth
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
Solar System
Mar 27, 2014
Earth and Mars are converging for a close encounter in April, an event astronomers call "the opposition of Mars."
ScienceCasts: The Opposition of Mars
Sun, Solar System
Mar 27, 2014
March 27, 2014:  For people in the United States, an extraordinary series of lunar eclipses is about to begin.
Solar System
Mar 20, 2014
A total lunar eclipse on April 15th marks the beginning of a remarkable series of eclipses all visible from North America.
ScienceCasts: A Tetrad of Lunar Eclipses
Universe
Mar 7, 2014
March 7, 2014:  More than 400 years ago, Galileo turned a primitive spyglass toward the sky, and in just a few nights learned more about the unseen heavens than all of the scientists and philosophers before him, combined.
Universe
Mar 6, 2014
Astronomers have figured out how to use the gravity of distant galaxies to bend light and magnify images, allowing them to see deeper into the cosmos than ever before.
ScienceCasts: A Telescope Bigger than a Galaxy
Universe
Mar 6, 2014
March 6, 2014: NASA's Hubble Space Telescope has recorded the never-before-seen break-up of an asteroid into as many as 10 smaller pieces. Fragile comets, comprised of ice and dust, have been seen falling apart as they approach the sun, but nothing like this has ever before been... Read More
Universe
Feb 26, 2014
Feb. 26, 2014: Years ago, before the launch of NASA’s Kepler spacecraft, astronomers were thrilled when they discovered a single planet. Today, the Kepler team announced 715. Kepler has always been good at finding planets. Even before the announcement... Read More
Universe
Feb 26, 2014
NASA announced a breakthrough addition to the catalog of new planets. Researchers using Kepler have confirmed 715 new worlds, almost quadrupling the number of planets previously confirmed by the planet-hunting spacecraft. Some of the new worlds are similar in size to Earth and orbit in... Read More
ScienceCasts: A Sudden Multiplication of Planets
Earth
Feb 26, 2014
Feb. 26, 2014:  As Arthur C. Clarke once remarked, "How inappropriate to call this planet Earth when it is quite clearly Ocean." Indeed, Earth is a water world.  The dry land most of us call home covers less than a third of the planet’s surface.... Read More