Stars are hot, right? Not this star.

Stars are hot. But astronomers have found the coolest star - temperature-wise. This star is cooler than the human body.

International Space Station might be de-manned by November

International Space Station managers are being forced to adjust the space station's flight manifest following the August 24, 2011 crash of a Russian cargo ship in Siberia.

Has Comet Elenin split in two or disintegrated?

Infamous Comet Elenin might be self-destructing. Its core appears elongated, and its brightness has decreased - telltale signs of a cometary break-up.

A powerful supernova explodes relatively near to Earth

A supernova which exploded on August 24 is getting brighter. Scientists believe that in about seven to 10 days, it will be visible from Earth with binoculars.

Creating a Milky Way on a supercomputer

An experiment creating the first simulation of a galaxy like the Milky Way supports the cosmological model of a cold dark matter universe.

Striking image of The Eyes of the cosmic Virgin

ESO's Very Large Telescope has taken a striking image of a beautiful yet peculiar pair of galaxies nicknamed the Eyes.

SETI searches on

The search for signals from intelligent beings beyond Earth will continue when the SETI Institute reboots its array of 42 antennas north of San Francisco.

A diamond planet? One may be orbiting a pulsar

Capturing the radio waves from a pulsar spinning at super speed, astronomers find a companion planet likely made of diamond.

Swift sees black hole devour a star

Since March 2011, astronomers have been watching a high-energy beam of X-rays streaming toward Earth. They think it's a black hole eating a star.

Colliding galaxies or cosmic exclamation point?

NASA released this composite image this week. It's two galaxies in the early stages of colliding. Learn more about the colliding galaxies here.