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Solar System
Nov 27, 2013

"Rock Comet" 3200 Phaethon has sprouted a tail, proving that the mysterious object is the source of the annual Geminid meteor shower.
Oct 24, 2013

Astronauts aren't the only ones who need to worry about solar flares. Ordinary air travelers can also be exposed to significant doses of radiation...
Solar System
Sep 15, 2013

The full Moon closest to the northern autumnal equinox is coming this week. Don't miss the Harvest Moon.
Aug 5, 2013

Something big is happening on the sun. The sun's global magnetic field is about to flip, a sign that Solar Max has arrived.
Jun 7, 2013

Glowing electric-blue at the edge of space, noctilucent clouds have surprised researchers by appearing early this year. The unexpected apparition...
May 2, 2013

Can plants adapt to the novelty of climate change? Researchers seeking to answer this question have sent genetically engineered plants to the ISS...
Mar 7, 2013

Forecasters say solar maximum is due in 2013. To prepare, the UN is organizing an international response to stormy space weather.
Solar System
Jan 28, 2013

On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys...
Jan 7, 2013

Researchers studying thunderstorms have made a surprising discovery: The lightning we see with our eyes has a dark competitor that discharges storm...
Nov 8, 2012

NASA has an unusual candidate for the astronaut corps--a rubber chicken. Seriously. Beloved by schoolchildren around the country, Camilla the rubber...