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New Year's Fireworks Poster 1
Solar System, Sky Watching, Meteor Showers
Dec 30, 2016
Earth will pass through a stream of debris from comet 2003 EH1 on January 3, 2017, producing a shower of meteors known as the Quadrantids.
Universe
Sep 5, 2014
Sept. 5, 2014:  A NASA instrument aboard the European Space Agency’s (ESA's) Rosetta orbiter has successfully made its first delivery of science data from comet 67P/Churyumov-Gerasimenko.
Earth
Sep 4, 2014
Almost 30 years after the Montreal Protocol put the brakes on ozone-depleting chemicals, one compound remains stubbornly and mysteriously abundant in the atmosphere. NASA scientists are tracking down the source and studying its effect on the ozone layer.
ScienceCasts: Mystery in the Ozone Layer
Universe
Aug 26, 2014
August 26, 2014:  The European Space Agency's Rosetta mission has chosen five candidate landing sites on comet 67P/Churyumov-Gerasimenko for its Philae lander. Philae's descent to the comet's nucleus, scheduled for this November, will be the first such landing ever attempted.
5 of the potential landing spots for Rosetta's Philae lander
Universe
Aug 26, 2014
August 26, 2014:  Once every 50 years, more or less, a massive star explodes somewhere in the Milky Way.  The resulting blast is terrifyingly powerful, pumping out more energy in a split second than the sun emits in a million years.  At its peak, a supernova can outshine the entire Milky Way... Read More
Solar System
Aug 25, 2014
August 25, 2014:  NASA’s Pluto-bound New Horizons spacecraft has traversed the orbit of Neptune. This is its last major crossing en route to becoming the first probe to make a close encounter with distant Pluto on July 14, 2015.
Universe
Aug 25, 2014
A NASA sounding rocket has confirmed that the solar system is inside an ancient supernova remnant. Life on Earth survived despite the nearby blasts.
ScienceCasts: Evidence for Supernovas Near Earth
Universe
Aug 18, 2014
August 18, 2014:  Barely 30 years ago, the only planets astronomers had found were located right here in our own solar system.  The Milky Way is chock-full of stars, millions of them similar to our own sun.  Yet the tally of known worlds in other star systems was exactly zero. What a difference a... Read More
Universe
Aug 18, 2014
Astronomers are not only discovering planets around distant suns, they are also starting to measure those worlds with astonishing precision. The diameter of a super-Earth named Kepler 93B is now known to within an accuracy of 148 miles.
ScienceCasts: Sizing up an Exoplanet
Universe, Sun, Solar System
Aug 15, 2014
August 15, 2014:  Sleeping late is one of the simple pleasures of summer vacation.  This week, waking up early will be a pleasure, too.
Universe
Aug 15, 2014
Wake up early in mid-August to see Venus and Jupiter shining side-by-side.
ScienceCasts: Beautiful Conjunction
Solar System
Aug 12, 2014
August 12, 2014:  On October 19, 2014, Comet Siding Spring will pass by Mars only 139,500 km away--which would be like a comet passing about 1/3 of the distance between Earth and the Moon. The nucleus of the comet won't hit Mars, but there could be a different kind of collision. "We hope to... Read More
Solar System
Aug 6, 2014
Comet Siding Spring is about to fly historically close to Mars. The encounter could spark Martian auroras, a meteor shower, and other unpredictable effects. Whatever happens, NASA's fleet of Mars satellites will have a ringside seat.
ScienceCasts: Mars vs Comet Siding Spring
Universe
Aug 6, 2014
August 6, 2014:  Today, after a decade-long journey chasing its target, the European Space Agency's Rosetta probe, carrying three NASA instruments, became the first spacecraft to rendezvous with a comet, 67P/Churyumov-Gerasimenko. "After 10 years, five months and four days... Read More
Universe
Aug 2, 2014
This news release is reprinted courtesy of the European Space Agency, which is leading the Rosetta mission to Comet 67P.