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NASA Embraces Small Satellites Poster
Earth, Sun
Mar 20, 2017
NASA is embracing small satellite designs, from tiny CubeSats to micro-satellites. These miniature marvels are providing many ways to collect science data and to demonstrate new technologies.
Nov 7, 2013
Nov. 7, 2013:  Astronomers viewing our solar system's asteroid belt with NASA's Hubble Space Telescope have seen for the first time an asteroid with six comet-like tails of dust. Designated P/2013 P5, the asteroid resembles a rotating lawn sprinkler.
Sun, Solar System
Nov 1, 2013
Nov. 1, 2013:  Scifi movies are sometimes criticized when explosions in the void make noise.  As the old saying goes, “in space, no one can hear you scream.” Without air there is no sound. But if that’s true, what was space physicist Don... Read More
Oct 31, 2013
Oct. 31, 2013:  Some Halloweens are scarier than others. Ten years ago, in late October 2003, space weather forecasters experienced a frission of dread when two gigantic sunspots appeared. Both had complex magnetic fields that harbored energy for strong... Read More
Oct 31, 2013
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.
ScienceCasts: The Sounds of Interstellar Space
Earth, Sun
Oct 25, 2013
Oct. 25, 2013:  The next time you step onto an airplane, consider the following:  In any given year, the pilot of your aircraft probably absorbs as much radiation as a worker in a nuclear power plant.  And you are about to follow him wherever he goes... Read More
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 during solar storms. A new computer model developed by NASA aims to help protect the public by predicting space weather hazards to aviation.
ScienceCasts: The Effects of Space Weather on Aviation
Solar System
Sep 24, 2013
Sept. 24, 2013:  Anticipation is building as Comet ISON approaches the sun for a close encounter on Thanksgiving Day (Nov. 28). No one knows if the blast of solar heating ISON receives will turn it into one of the finest comets in years--or destroy the icy visitor from the... Read More
Solar System
Sep 23, 2013
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.
ScienceCasts: Amateur Astonomers See Comet ISON Approaching the Sun
Sun, Solar System
Sep 16, 2013
Sept. 16, 2013:  According to folklore, every full Moon has a special name.  There's the Wolf Moon, the Snow Moon, the Worm Moon,  the Sprouting Grass Moon,  the Flower Moon,  the Strawberry Moon, the Thunder Moon,  the Sturgeon Moon, the Harvest... Read More
Solar System
Sep 15, 2013
The full Moon closest to the northern autumnal equinox is coming this week. Don't miss the Harvest Moon.
ScienceCasts: The Harvest Moon
Universe, Earth, Sun
Sep 12, 2013
Sept. 12, 2013:  NASA's Voyager 1 spacecraft officially is the first human-made object to venture into interstellar space. The 36-year-old probe is about 12 billion miles (19 billion kilometers) from our sun.
Earth, Sun
Sep 10, 2013
Sept. 10, 2013:  We all know what comes out of the bottom of thunderstorms: bolts of lightning. Jagged columns of light plunge Earthward, heating the air to 50,000 degrees F, about five times hotter than the surface of the sun. Claps of thunder announce this process... Read More
Sep 9, 2013
Sometimes, Earth mimics a supernova, producing a Terrestrial Gamma-ray Flash from the tops of thunderstorms. A new lightning sensor on the International Space Station could solve the mystery of these energetic bursts.
ScienceCasts: ISS Firestation to Explore the Tops of Thunderstorms
Sep 3, 2013
Sept. 3, 2013:  A NASA-led team of scientists has uncovered strong evidence that soot from a rapidly industrializing Europe caused the abrupt retreat of mountain glaciers in the European Alps that began in the 1860s, a period often thought of as the end of the Little Ice... Read More