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The nearest galaxy to our own Milky Way has been revealed. It is so close that the Milky Way is gradually consuming it by pulling in its stars. But it will be few billion years before it is entirely swallowed up. The previously unknown galaxy lies about 25,000 light years from Earth and 42,000 light years from the centre of the Milky Way, beyond the stars in the constellation Canis Major. It is twice as close to the centre of our galaxy than the previous record holder, the Sagittarius Dwarf Galaxy, which was discovered in 1994. Geraint Lewis, at the...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 March 23 Alpha Centauri: The Closest Star System Credit: 1-Meter Schmidt Telescope, ESO Explanation: The closest star system to the Sun is the Alpha Centauri system. Of the three stars in the system, the dimmest -- called Proxima Centauri -- is actually the nearest star. The bright stars Alpha Centauri A and B form a close binary as they are separated by only 23 times the Earth-...