Source: Telegraph (UK) (8-11-09)
A Nasa space telescope has found evidence of a high-speed collision between two forming planets orbiting a young star.

Astronomers say the cosmic pile-up is similar to the one that formed our Moon some four billion years ago, when a Mars-sized object crashed into Earth.

Telltale plumes of vaporised rock and lava leftover from the collision which happened a few thousand years ago were picked up by the telescope.

The details are to be published in the Astrophysical Journal.