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Discovery Alert: An Earth-sized World and Its Ultra-cool Star
4 min read
Our galaxy is a jewel box of red stars. More than 70% of the stars in the Milky Way are M dwarfs, also known as red dwarfs. These stars are cool and dim compared with our Sun, but they often…
Article4 days ago
Hubble Views the Dawn of a Sun-like Star
2 min read
Looking like a glittering cosmic geode, a trio of dazzling stars blaze from the hollowed-out cavity of a reflection nebula in this new image from NASA’s Hubble Space Telescope. The triple-star system is made up of the variable star HP…
Article4 days ago
NASA’s Chandra Releases Doubleheader of Blockbuster Hits
4 min read
New movies of two of the most famous objects in the sky — the Crab Nebula and Cassiopeia A — are being released from NASA’s Chandra X-ray Observatory. Each includes X-ray data collected by Chandra over about two decades. They…
Article4 weeks ago