Russia launches 'biggest-ever' space telescope

The Russian RadioAstron space telescope - effectively, the biggest ever - has been successfully launched from Baikonur in Kazakhstan.

Astronomers 'weigh' heaviest black hole yet

Astronomers have measured the most massive known black hole in our cosmic neighborhood, weighing in at the equivalent of 6.6 billion suns.

Comet McNaught was biggest yet

British scientists reckon they've identified the largest comet yet, using data from the ESA/NASA Ulysses spacecraft to measure the region of space disturbed by the its presence.