New Horizons Becomes Closest Spacecraft to Approach Pluto

Progress Resupply Craft Lost After Launch

Amateur astronomer glimpses an alien solar system

No new contact with stranded Mars probe

A black hole unmasked

Fire Burns Differently in Space, Space Station Experiment Shows

Skywatcher Snaps Photos of Stranded Russian Mars Probe

Los Alamos instrument to shine light on Mars habitability

The human cost of Russia's lost spacecraft

'Heartbeat' of Earth's Atmosphere Detected from Space

Scientists Discover Huge Martian Water Deposit—Could Be Used By Human Explorers

Astronomers discover 18 huge new planets

Mars Science Laboratory Mission Status Report: Course Excellent, Adjustment Postponed

"The Earth Strain" --Have NASA Missions Contaminated Mars?

The Milky Way is 'still hungry' - how our galaxy keeps devouring its smaller neighbours

Q&A: How to Rate the Habitability of Other Planets

New Horizons Becomes Closest Spacecraft to Approach Pluto

Hi-Res Global Topographic Map of Moon

Epic Alien Storm on Saturn -- Captured by Cassini Space Probe

Airships Offer Alternative Stairway to Space

Orange Sun Oozing

Jealousy a Problem During 'Mars Mission'

An Elegant Plea for Space Exploration

One of the galaxy’s youngest stars surrounds itself with massive nebula

Long Space Missions Can Give Astronauts Blurry Vision, Study Finds

Slideshow: 6 Everyday Things that Happen Strangely In Space

NASA Hitches a Ride on a Russian Craft, and Begins a New Dependent Phase

NASA Sets Mars Science Laboratory Launch Coverage

Astronauts falling on the moon

Chinese hackers took control of NASA satellite for 11 minutes

8 mysterious images of Mars

Treasure trove of Space Age artifacts landing at NYC museum

High Resolution Global Topographic Map of Moon

A mind-boggling infographic of all the missions from Earth to Mars, and where they wound up

Planetary probe hall of fame

Saturn's Northern Storm

Exoplanet Count Sails Past 700 Alien Worlds

How Did They Install the Most Amazing Window Ever Created By Humankind