NASA's Nancy Grace Roman Space Telescope has just successfully completed the critical design review of the mission’s ground systems, which are spread over multiple institutions including the Space Telescope Science Institute in Baltimore,...
29-Jul-2021 10:05 AM EDT Add to Favorites
Located ½-billion miles from the Sun, the water ice on Ganymede's surface is frozen solid in frigid temperatures as low as minus 300 degrees Fahrenheit. This makes the ice as hard as rock. Still, a rain of charged particles from the Sun is enough...
26-Jul-2021 11:05 AM EDT Add to Favorites
Planetary systems are very busy places. In addition to the planets orbiting their host star, planetary systems are chock full of dust and other fragments left over from planet formation – a debris disk. Our own solar system includes the Kuiper...
21-Jul-2021 10:05 AM EDT Add to Favorites
These early snapshots demonstrate Hubble's return to full science operations, following correction of a computer anomaly aboard the spacecraft. Normal science observations were restarted on July 17, at 1:18 pm EDT.
19-Jul-2021 4:05 PM EDT Add to Favorites
Outshining all the stars in their host galaxies combined, quasars are among the brightest objects in the universe. These brilliant, distant and active supermassive black holes shape the galaxies in which they reside. Shortly after its launch,...
23-Jun-2021 10:15 AM EDT Add to Favorites
Hubble astronomers say they confirmed that an oddball
galaxy mysteriously lacks dark matter—the glue that holds stars and gas together in galaxies. This confirmation challenges the standard ideas of how researchers think galaxies work.
17-Jun-2021 11:00 AM EDT Add to Favorites
Researchers used the giant W. M. Keck Observatory in Hawaii to observe a nearby brown dwarf in infrared light. They found that the dwarf’s atmosphere has a layer-cake structure with clouds of different composition at different altitudes.
9-Jun-2021 4:35 PM EDT Add to Favorites
The magnificent spiral galaxy NGC 2276 looks a bit lopsided in this Hubble Space Telescope snapshot. A bright hub of older yellowish stars normally lies directly in the center of most spiral galaxies. But the bulge in NGC 2276 looks offset to the...
27-May-2021 7:00 AM EDT Add to Favorites
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