This image shows the planet K2-18B, it's host star and an accompanying planet in this system. K2-18B is now the only super-Earth exoplanet known to host both water and temperatures that could support life
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.
This Hubble image shows RS Puppis, a type of variable star known as a Cepheid variable. As variable stars go, Cepheids have comparatively long periods — RS Puppis, for example, varies in brightness by almost a factor of five every 40 or so days
This NASA/ESA Hubble Space Telescope image shows a globular cluster known as NGC 104 - or, more commonly, 47 Tucanae, since it is part of the constellation of Tucana (The Toucan) in the southern sky.