Star clusters are common structures throughout the Universe, each made up of hundreds of thousands of stars all bound together by gravity. This star-filled image, taken with the NASA/ESA Hubble Space Telescope's Wide Field Camera 3 (WFC3), shows one of them: NGC 1866.
This image combines Hubble observations of Messier 106 with additional information captured by amateur astronomers Robert Gendler and Jay GaBany. Gendler combined Hubble data with his own observations to produce this stunning colour image. Messier 106 is a relatively nearby spiral galaxy, a little over 20 million light-years away.
This image shows the galaxy Messier 94, which lies in the small northern constellation of the
The barred spiral galaxy NGC 1672, showing up clusters of hot young blue stars along its spiral arms, and clouds of hydrogen gas glowing in red. Delicate curtains of dust partially obscure and redden the light of the stars behind them. NGC 1672's symmetric look is emphasised by the four principal arms, edged by eye-catching dust lanes that extend out from the centre.