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In this October, 2014 photo, the Hubble Space Telescope shows the 'ghost light' from stars ripped apart in ancient galaxies 4 billion light years away. The destruction happened inside an immense collection of nearly 500 galaxies nicknamed 'Pandora's Cluster,' also known as Abell 2744. (NASA photo)
Pillars of Creation - three giant columns of cold gas bathed in the scorching ultraviolet light from a cluster of young, massive stars in a small region of the Eagle Nebula, or M16.
Thousands of stars are forming in the cloud of gas and dust known as the Orion nebula. More than 3,000 stars of various sizes appear in this image. Some of them have never been seen in visible light.
Denoted N 49, or DEM L 190, this remnant is from a massive star that died in a supernova blast whose light would have reached Earth thousands of years ago. This filamentary material will eventually be recycled into building new generations of stars. Our own sun and planets are constructed from similar debris of supernovae that exploded in the Milky Way billions of years ago.
The Andromeda galaxy is the closest major galaxy to ours. Excluding the Large and Small Magellanic Clouds, which can't be seen from northerly latitudes, the Andromeda galaxy - also known as M31 - is the brightest galaxy in all the heavens. It's the most distant thing you can see with your unaided eye, at 2.3 million light-years. To the eye, it appears as a smudge of light larger than a full moon.
Andromeda image assembled together into a mosaic image using 7,398 exposures taken over 411 individual pointings.
Hubble's High-Definition Panoramic View of the Andromeda Galaxy (01/05/2015) - Full mosaic
Hubble's High-Definition Panoramic View of the Andromeda Galaxy (01/05/2015) - Panchromatic Hubble Andromeda Treasury (PHAT) Hubble Space Telescope (HST)/Advanced Camera For Surveys (ACS)/Wide Field Camera (WFC)
48,000-light-year-long stretch of the galaxy in its natural visible-light color.
See more at:
HubbleSite - Reference Desk - Glossary
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Hubble Heritage - Most visibly appealing images.
The Hubble Deep Fieldlast updated 12 June 2014
Hubble Ultra Deep Field in 3D