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The youngest exoplanet yet discovered is less than 1 million years old.
More than 800 extrasolar planets have been discovered.
On Feb. 13th at 1738 UT, sunspot 1158 unleashed the strongest solar flare of the year so far, an M6.6-category X-ray irradiance magnitude blast. NASA's Solar Dynamics Observatory recorded an intense flash of extreme ultraviolet radiation. The source of th
The sun's unceasing activity affects our planet beyond providi...
Skywatcher James Tse snapped this view of the partial solar eclipse on Nov. 25, 2011 from Christchurch, New Zealand.
Total solar eclipses are one of Nature’s grandest events. What...
Astronomers use the huge Arecibo Observatory, a radio telescope in Puerto Rico, to study the close flyby of Earth by asteroids.
Arecibo Observatory has been used to send a SETI message as we...
Hubble Finds Dark Matter Ring in Galaxy Cluster
Dark matter emits no light, and cannot be directly observed, b...
Dark Energy Mystery Illuminated By Cosmic Lens
Dark energy is a mysterious quantity that makes up, along with...