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Close Approach Comets Poster
Solar System, Sky Watching
Apr 20, 2017
In 2017 and 2018, three comets will pass near the Earth providing the opportunity to observe and study these icy interlopers.
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
Earth
Feb 21, 2014
NASA and JAXA are about to launch a new satellite that can see through storms, tracking rain and snow around the globe better than any previous observatory. The Global Precipitation Measurement Core Observatory is scheduled to lift off from Japan on Feb. 27th.
ScienceCasts: Follow the Water
Universe
Feb 19, 2014
Feb. 19, 2014:  A longstanding mystery of astronomy, how supernovas explode, might finally have been solved with the help of NASA's Nuclear Spectroscopic Telescope Array (NuSTAR).  The high-energy X-ray observatory has mapped radioactive material in the supernova... Read More
Solar System
Feb 14, 2014
Feb. 14, 2014:  What if a rock that looked like a jelly doughnut suddenly appeared on Mars? That's just what happened in front of Mars rover Opportunity last month. Researchers have since determined that the "doughnut" is a piece of a larger rock broken and moved by the... Read More
Universe, Earth
Feb 14, 2014
Feb. 14, 2014: A lot can happen in 10 years. Over the past decade an international laboratory, widely known but often under-appreciated, has been producing results at an extraordinary rate. Using its unique capabilities,
ISS
Feb 13, 2014
With the space station no longer "under construction," the world's most advanced orbital laboratory is open for business. The station has just received a 10-year extension from NASA, giving researchers the time they need to take full advantage of its unique capabilities.
ScienceCasts: 10 More Years