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Mostly cloudy with a t-storm
A thunderstorm Tuesday
of sunlight, then sets at
of moolight, then sets at
What happens when you make a low-level flyby of a cometary nucleus? You get jaw-dropping images.
As the famous telescope turns 25, scientists who have worked on the project chose their favorite pictures.
The cosmic world is full of runaways, including billions of planets and stars. Now astronomers can add entire galaxies to the ranks of the homeless.
The Hubble Space Telescope hitched a ride 25 years ago to low-Earth orbit aboard space shuttle Discovery. It was the biggest, baddest space telescope ever launched.
You may be able to spot Orion’s Belt and the Big Dipper from London and New York, but the glow of the Milky Way? You’ll need to be somewhere a bit more remote for that—like lunar-desert-on-Africa’s-western-coast remote.
Our Sun missed the stellar "baby boom" that erupted in our young Milky Way galaxy 10 billion years ago. During that time the Milky Way was churning out stars 30 times faster than it does today.
An exploding star gets brighter, and a planet makes a close pass by the Pleiades star cluster.
NASA's Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter's largest moon.
Dec 14, 2012; 5:00 AM ET
The Mars Science Laboratory Rover 'Curiosity' continues its sampling and analyzing of the Martian surface.