More to the Universe Than Meets the Eye
The universe is full of invisible stuff. Take dark matter–you can’t spot it with your eyes, but it outnumbers visible matter five to one!
What Happens When Two Galaxies Collide?
Astronomers say the Andromeda and Milky Way galaxies will collide in four billion years.
Ex-Spy Telescopes May Aid Hunt for Dark Energy
The spy telescopes are wide-angle and short in length–earning them the nickname “stubby Hubbles.”
SpaceX Dragon May Ferry Astronauts by 2015
After a successful cargo run to the space station, SpaceX is preparing the Dragon capsule for crew.
Planning for a Solar Sky Show
Want to see a ring of fire? We’ll tell you how to see Sunday’s solar eclipse.
On Eve of Launch, SpaceX Head Talks about Mission
Elon Musk on the Dragon launch, traveling to Mars, and–his other hobby–electric cars.
Mining Quarries Millions of Miles from Earth
A company aims to expand the world’s natural resource base by mining asteroids.
An Astronaut Explores NASA’s Scientific Frontiers
Astronaut and astrophysicist John Grunsfeld leads NASA’s investigations of Earth–and beyond.
Living It Up In Space
Two NASA astronauts aboard the International Space Station talk about life and the view from 220 miles above Earth.
Adam Riess: One Cosmic Puzzle Solved, Many To Go
Nobel Prize-winning astrophysicist Adam Riess discusses the mysterious force known as dark energy.