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Earth's Moon: Formation, Composition and Orbit
Scientists say a giant impact knocked off the raw ingredients for the moon off the primitive molten Earth and into orbit.
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During this month of May, four bright planets will engage in a fascinating dance with each other in the morning sky.
The shores of Ontario Lacus lake in the Southern Hemisphere of Saturn's moon Titan has very familiar features, surprising being that it is 800,000,000 miles away and 289° below 0°F.
Next stop, somewhere beyond Earth's orbit.
An untold number of cosmic impacts could have created the mysteriously thick atmosphere on Titan.
In late May and early June, the Moon will appear to dance from day to day with Jupiter, Mercury and Venus. This animation looks East at 5:00am from the U.S. East Coast. Viewers with telescopes can also spot Uranus, Neptune and Ceres in this ballet.
Here are a few basic questions and answers about astronaut Alan Shepard's historic spaceflight of May 5, 1961.
This autumn, an asteroid the size of an aircraft carrier will zoom closer to Earth than our own moon, causing scientists to hold their breath.
A huge ocean of liquid water may slosh about beneath the frigid surface of Saturn's moon Titan, according to a new study.
When the Apollo 12 crew returned pieces of a moon probe to Earth, scientists found microbes from Earth inside.
Skywatching tips for how you can view six planets aligned above the rising sun.
Space tourism has already reached low-Earth orbit, and now the industry is shooting for the moon.
The Space Exploration Vehicle will provide astronauts a pressurized shirtsleeve environment as well as hatch attached space suits to explore the moons surface. NASA's Desert Research and Technology Studies (D-Rats) team are testing the vehicle.
Skywatchers can observe the first full moon of the spring season in the Northern Hemisphere Sunday (April 17).
The global image should aid lunar research and exploration for years to come, scientists say.
SpaceX's Falcon Heavy rocket under development could enable new missions beyond low-Earth orbit to destinations in the solar system.
Over the next few days, the moon will move past two of the prettiest star clusters in the sky.
Wadi Rum is an alien-looking landscape in Jordan.
Skywatching events in April 2011, including planet conjunctions and a meteor shower.
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