As Voyager 1 recedes from the solar system, researchers are listening for "interstellar music" (a.k.a. plasma waves) to learn more about conditions outside the heliosphere.

Ordinary air travelers can be exposed to significant doses of radiation during solar storms. A new computer model developed by NASA aims to help protect the public by predicting space weather hazards to aviation.

To learn how you can help, visit isoncampaign.org. Comet ISON is still more than two months away from its spectacular close encounter with the sun. Already, the brightening comet has become a good target for backyard telescopes in the pre-dawn sky.

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

A new lightning observatory on the International Space Station is taking data to solve the mystery of Terrestrial Gamma-ray Flashes.

A NASA spacecraft slated for launch in September will fly to the Moon to investigate the tenuous lunar atmosphere. Researchers hope "LADEE" will solve a mystery that has been puzzling them since the days of Apollo.

Comet ISON is heading for a Thanksgiving Day brush with the sun, but first it's going to pay a visit to Mars. In this week's ScienceCast, researchers discuss what might happen when Comet ISON meets the Red Planet.

An exotic class of exoplanets called "hot Jupiters" are even weirder than astronomers imagined. While these worlds may have Earth-like blue skies, new data show that they are anything but Earth-like.

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

New research from NASA's Meteoroid Environment Office identifies the Perseids as the "fireball champion" of annual meteor showers. This year's Perseid display peaks on August 12th and 13th.