hubble

Rings, Auroras and Uranus

This is a composite image of Uranus by Voyager 2 and two different observations made by Hubble — one for the ring and one for the auroras. Ever since Voyager 2 beamed home spectacular images…


A heated and expanding debate

It was the early 1990s, and the Carnegie Observatories in Pasadena, California, had emptied out for the Christmas holiday. Wendy Freedman was toiling alone in the library on an immense and thorny problem: the expansion…


Spiral, lenticular and massive

This NASA/ESA Hubble Space Telescope image showcases the remarkable galaxy UGC 12591. Classified as an S0/Sa galaxy, UGC 12591 sits somewhere between a lenticular and a spiral. It lies just under 400 million light-years away…


Even a supernova grows old

… in a way… And this is how it looks. Thirty years ago, on 23 February 1987, the light from a stellar explosion marking the death of a massive star arrived at Earth to shine…


Back to the 80’s

Located in the Large Magellanic Cloud, a satellite galaxy of the Milky Way, Supernova SN 1987A is the nearest supernova explosion observed in hundreds of years. It marked the end of the life of a…


Casting an exoshadow

Eerie mysteries in the universe can be betrayed by simple shadows. The wonder of a solar eclipse is produced by the moon’s shadow, and over 1,000 planets around other stars have been cataloged by the…


Megamaser in sight

This galaxy has a far more exciting and futuristic classification than most — it hosts a megamaser. Megamasers are intensely bright, around 100 million times brighter than the masers found in galaxies like the Milky…