Particles Retain Weight for Billions of Years
New data from a distant galaxy provide evidence that the mass of fundamental bits of matter has not changed since the universe was half its age.
Stakeholders Meet to Ensure Longevity of Space Station
Asteroid Cruises Past Earth ... With a Partner!
NASA Sticks a Fork in Mars
Sun's Not Screwy, Scientist Says
Water Discovered in Moon Samples
How NASA Might Find Rock-Eating Microbes on Mars
Spacewalkers to Investigate Russian Craft's Malfunction
The Roar of the Aurora
Image of the Day: When the Sun Shines, We'll Shine Together
The Most Amazing Views from Space
NEW VIDEO: Hurricane Bertha: View from a Million Feet
The International Space Station view of Hurricane Bertha barreling across the Atlantic. Credit: Space.com/NASA