The star-forming region NGC 3603 - seen here in the latest Hubble Space Telescope image - contains one of the most impressive massive young star clusters in the Milky Way. Bathed in gas and dust the cluster formed in a huge rush of star formation thought to have occurred around a million years ago.
A century ago, Albert Einstein published his famous theory of relativity.
This craggy fantasy mountaintop enshrouded by wispy clouds looks like a bizarre landscape from Tolkien's The Lord of the Rings.
This image, not unlike a pointillist painting, shows the star-studded centre of the Milky Way towards the constellation of Sagittarius