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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

"Mini Supernova" Explosion Could Have Big Impact

This is GK Persei, an object that became a sensation in the astronomical world in 1901 when it suddenly appeared as one of the brightest stars in the sky for a few days, before gradually fading away in brightness. Today, astronomers cite GK Persei as an example of a “classical nova,” an outburst produced by a thermonuclear explosion on the surface of a white dwarf star, the dense remnant of a Sun-like star.

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

NASA.gov brings you the latest images, videos and news from America's space agency. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind.

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

Progress 45 Resupply Vehicle /by NASA #ISS #progress #spaceship

DNews: Is Another Planet Lurking Beyond Neptune? 11/21/14 : Discovery News

Astronaut Rick Mastracchio During the 5-hour, 28-minute spacewalk on 15 Aug. 2007, STS-118 mission specialist, participates in the mission’s third planned session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. Spacewalks – Blue Sky: credit: NASA

An expended Saturn IVB stage being used as a target for simulated docking maneuvers over Sonora, Mexico, during Apollo 7's second revolution around Earth on Oct. 11, 1968. [4120 × 4164]