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Galactic cannibalism brings an exoplanet of extragalactic origin within astronomers' reach.
Astronomers at the European Southern Observatory (ESO) have discovered five planets orbiting a star in what is being called "the biggest discovery of so-called exoplanets since the first was logged 15 years ago."
Astronomers, including one at The University of Arizona, have successfully predicted the existence of an unknown planet, the first since Neptune was predicted in the 1840s. This planet, however, is outside our own solar system, circling a star a little more than 200 light years from Earth.
Astronomers have spotted a swirling debris cloud around a sun-like star where terrestrial planets similar to Earth may be forming in a process that could shed light on the birth of the solar system.
NASA's Spitzer Space Telescope has spotted what may be the dusty spray of asteroids banging together in a belt that orbits a star like our Sun. The discovery offers astronomers a rare glimpse at a distant star system that resembles our home, and may represent a significant step toward learning if and where other Earths form.
- A volcanic mudflow.