Watch Galaxies Form
5.09.1996

Snips and snails and puppy dog tails, is that what galaxies were made of? In a report released yesterday and soon to be published in Nature, astronomers have imaged an interesting distant patch of sky with the orbiting Hubble Space Telescope.

Galaxy Zoo Catalogs the Universe
26.10.2009

You, too, can Zoo. The Galaxy Zoo project has been enabling citizen scientists -- inquisitive people like yourself armed with only a web browser-- to sort through the universe. Specifically, after a brief training session...

APOD: 2026 March 21 Б Galaxies in the River: NGC 1300 and NGC 1297
21.03.2026

Spiral NGC 1300 and elliptical NGC 1297 are galaxies that lie on the banks of the southern constellation Eridanus (The River). At 70 million light-years distant or more, both are members of the Eridanus Galaxy Cluster.

Black Hole Safety Video
1.10.2019

If you were a small one-eyed monster, would you want to visit a black hole? Well the one in this video does -- but should it? No, actually, but since our little friend is insistent on going, the video informs it what black holes really are, and how to be as safe as possible when visiting.

A Total Lunar Eclipse Corona
9.06.2021

This moon appears multiply strange. This moon was a full moon, specificallyбcalled a Flower Moon at this time of the year. But that didn't make it strange -- full moons occur once a month (moon-th).

NGC4039: Starbirth and Galaxy Death
6.05.1997

Do star clusters form when galaxies collide? Quite possibly, according to Hubble Space Telescope observations of the "Antennae", two galaxies thought to be in the early stages of a collision.

Centaurus A: Young Blue Star Stream
17.10.2002

Almost lost in this cosmic jumble of stars, gas and dust is a faint but definite blue arc -- a stream of young stars whose formation was probably triggered as a small dwarf galaxy was torn apart approaching the giant elliptical galaxy Centaurus A.

X-Rays From IC 443
2.05.1997

The life-cycles of stars help drive the ecology of our Galaxy, churning, processing, and redistributing matter. Massive stars reach a spectacular evolutionary endpoint - supernovae explosions which blast off their outer layers, violently merging stellar material with the gas and dust of the Milky Way. The supernova remnant IC 443 is typical of the aftermath.

X-Rays From Antennae Galaxies
18.08.2000

A bevy of black holes and neutron stars shine as bright, point-like sources against bubbles of million degree gas in this false-color x-ray image from the orbiting Chandra Observatory. The striking picture shows...

X Rays From Antennae Galaxies
3.02.2004

A bevy of black holes and neutron stars shine as bright, point-like sources against bubbles of million degree gas in this false-color x-ray image from the orbiting Chandra Observatory. The striking picture spans about...