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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.
Earth
Oct 9, 2014
Oct. 9, 2014: NASA’s extensive fleet of science assets, particularly those orbiting and roving Mars, have front row seats to image and study a once-in-a-lifetime comet flyby on Sunday, Oct. 19. Comet C/2013 A1, also known as comet Siding Spring, will pass within about 87,000 miles... Read More
Solar System
Oct 8, 2014
NASA's MAVEN spacecraft has reached Mars and it is beaming back "First Light" images of the Red Planet's upper atmosphere. The data could help researchers understand what transformed Mars from a hospitable planet billions of years ago into a desiccated wasteland today.
ScienceCasts: First Light for MAVEN
Earth
Oct 7, 2014
Oct 7, 2014: Sea ice surrounding Antarctica reached a new record high extent this year, covering more of the southern oceans than it has since scientists began a long-term satellite record to map sea ice extent in the late 1970s. The upward trend in the Antarctic, however, is only about a... Read More
Earth
Oct 6, 2014
Oct. 6, 2014: The cold waters of Earth’s deep ocean have not warmed measurably since 2005, according to a new NASA study, leaving unsolved the mystery of why global warming appears to have slowed in recent years.
Earth, ISS
Sep 24, 2014
The weekend launch of ISS-RapidScat onboard SpaceX-4 has kickstarted a new era for the International Space Station as a giant Earth-observing satellite.
ScienceCasts: A Giant Among Earth Satellites
Earth
Sep 24, 2014
Sept. 24, 2014: The International Space Station has been called a stepping stone to other worlds. NASA hasn't forgotten, however, that the behemoth space station is also on the doorstep of Earth. "We're seeing the space station come into its own as an Earth-observing platform," says Julie... Read More
Solar System
Sep 22, 2014
Sept. 22, 2014:  NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft successfully entered Mars’ orbit at 10:24 p.m. EDT Sunday, Sept. 21, where it now will prepare to study the Red Planet’s upper atmosphere as never done before. MAVEN is the first spacecraft dedicated to... Read More
Earth
Sep 22, 2014
Sept. 22, 2014: Arctic sea ice coverage continued its below-average trend this year as the ice declined to its annual minimum on Sept. 17, according to the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder. "Arctic sea ice coverage in... Read More
Earth, Sun, Solar System
Sep 18, 2014
Sept. 18, 2014:  On Wednesday morning, Oct. 8th, not long before sunrise, the bright full Moon over North America will turn a lovely shade of celestial red.  It's a lunar eclipse—visible from all parts of the USA. "It promises to be a stunning sight, even from the most light polluted cities,"... Read More
Solar System
Sep 17, 2014
Mark your calendar: On Oct. 8th, the Moon will pass through the shadow of Earth for a total lunar eclipse. Sky watchers in the USA will see the Moon turn a beautiful shade of celestial red and maybe turquoise, too.
ScienceCasts: A Colorful Lunar Eclipse
Sep 10, 2014
Sept. 10, 2014:  Fire is inanimate, yet anyone staring into a flame could be excused for thinking otherwise: Fire dances and swirls.  It reproduces, consumes matter, and produces waste. It adapts to its environment. It needs oxygen to survive. In short, fire is uncannily lifelike... Read More
ISS
Sep 9, 2014
Astronauts onboard the International Space Station report seeing flames that behave like jellyfish. Video of the microgravity phenomenon is a must-see.
ScienceCasts: Jellyfish Flame on the International Space Station
Earth
Sep 5, 2014
Sept. 5, 2014: A small asteroid, designated 2014 RC, will safely pass very close to Earth on Sunday, Sept. 7, 2014.  At the time of closest approach, based on current calculations to be about 2:18 p.m. EDT (11:18 a.m. PDT / 18:18 UTC), the asteroid will be roughly over New Zealand.  From its... Read More
Earth
Sep 5, 2014
Sept. 5, 2014:  High above Earth, more than 20 miles above sea level, a diaphanous layer of ozone surrounds our planet, absorbing energetic UV rays from the sun.  It is, essentially, sunscreen for planet Earth. Without the ozone layer, we would be bathed in dangerous radiation on a daily... Read More