Liquid water has been found in a lake just below the surface of Jupiter's moon Europa, with important implications for the search for extraterrestrial life.

Nov 17, 2011 – John Austin

A lunar eclipse darknes the night, two meteors showers brighten it again, and the solstice brings winter to the Northern Hemisphere.

Nov 16, 2011 – Kelly Whitt

Given Jupiter's gaseous composition and 54,000 degree internal temperature, it's almost in the sub-category between planet and star. Almost.

Nov 11, 2011 – Walter McLaughlin

Few subjects have captured the imagination of people more than the possibility of alien life. Some scientists say city lights are the key to finding aliens.

Nov 8, 2011 – Harvey Craft

This article explores Michio Kaku's theory that a multi-layered force field should be possible in the near future.

Nov 7, 2011 – Janice Heffernan

UFO fanatics have long touted the face on the surface of Mars as proof of extraterrestrial life. But it is often debunked as shadows.

Nov 4, 2011 – Brenda Gargus

The longest isolation experiment in space history ended as the hatch of the Mars500 project opened in Moscow after 520 days "in space".

Nov 4, 2011 – David Hein

Sky and Telescope's "Pocket Sky Atlas" is a wonderful resource for all amateur astronomers. These challenges are designed for spicing up your observing.

Oct 31, 2011 – John Kulczycki

A partial solar eclipse, a couple meteor showers, and bright planets highlight the month of November.

Oct 30, 2011 – Kelly Whitt

Bacterial life may be common in the universe, with Earth's amino acids having cosmic origin. But intelligent life? Some astronomers think it's worth a look.

Oct 29, 2011 – Catherine E Whitehead

In October 2008, a meteoroid impacted the Earth in Sudan. This marked the first time in history when mankind has predicted the strike of a celestial object.

Oct 23, 2011 – Kitty Grey

With the new discovery of titanium on the moon, it is looking more lucrative to own the moon. Is it possible to own the moon? And if so, will China?

Oct 21, 2011 – Shelly Lange

Measurements now show ozone in the atmospheres of Venus, Earth and Mars, helping to refine the future search for life elsewhere.

Oct 9, 2011 – John Austin

Andromeda was tied to a rock and sacrificed to Cetus, the sea monster, when Perseus on Pegasus turned it to stone with the head of Medusa, saving Argos.

Oct 8, 2011 – Michael Manning

After the formation of the solar system, the Earth was hot and dry. Comets from the Kuiper belt probably supplied much of Earth's water.

Oct 6, 2011 – John Austin

Saturn is one of the most fascinating planets in our solar system. It is quite mysterious and intricate.

Oct 3, 2011 – Daniel Morales

A black hole can easily be described as a star that has collapsed within itself.

Oct 3, 2011 – Daniel Morales

The Milky Way galaxy is easily the most important galaxy in the universe.

Oct 3, 2011 – Daniel Morales

The impending supernova of Betelgeuse - some time over the next million years - will offer a spectacular display in the sky. Why link it to Mayan's 2012?

Oct 2, 2011 – Barry Curtis

U.S. reusable rockets to help propel men to Mars and China's launch of its test space lab were announced yesterday (Sept. 29, 2011). What is the impact?

Sep 30, 2011 – Rosemary E. Bachelor