Media playback is unsupported on your device

Comet's 'goosebumps' give formation clue

Scientists studying the Comet 67P, which is being tracked by the Rosetta space probe, may have found evidence of how it was first formed 4.5 billion years ago.

Researchers say pictures being sent back by the probe are showing what they are calling the comet's "goosebumps".

They are believed to be the original blocks of material that came together to form the comet.

Pallab Ghosh reports.

  • 23 Jan 2015
Go to next video: Comet's 'dunes, drifts and goosebumps'