Astronomers have learned that our Local Group of galaxies - known to be part of the Virgo Supercluster - is also part of an even-larger supercluster. The newly identified supercluster is called Laniakea, which is Hawaiian for "immense heaven."

Submit your message on the future of communications or solar system exploration. It might be chosen for a time capsule aboard an asteroid sample return mission.

National Radio Astronomy Observatory astronomers used a tried-and-true method - stellar parallax - to resolve a controversy over the Pleiades' distance.

A NASA sounding rocket has confirmed that the solar system is inside an ancient supernova remnant. Life on Earth survived despite the nearby blasts.

Using telescopes on the ground and in space, astronomers have obtained the best-yet view of a galaxy collision that happened when the universe was half its current age.

Scientists test a device on an Alaska glacier that could be used to explore an icy moon of Jupiter.

NASA says this is New Horizons' last major crossing en route to becoming the first probe to make a close encounter with distant Pluto on July 14, 2015.

Five finalists named as potential landing sites this November for Philae lander in ESA's fabulous Rosetta comet mission. Comet 67P/Churyumov–Gerasimenko, here we come.

On the anniversary of Voyager 2's encounter with Neptune and Triton ... an awesome collection of restored Voyager 2 images, plus the link between Triton and Pluto.

The longest lunar month of 2014 starts with the August 25 new moon and ends September 24. All you need to know about the varying lengths of the lunar months, here.