A cosmic smashup sends lava and rubble flying, a Martian meteorite gets a color treatment, a young black hole is put on a strict diet, and more in the week's best space pictures.

In the weeks leading up to today's Saturn equinox, a possible moonlet punctured one of the planet's thin outer rings, creating a glittering structure unlike anything seen before.

A bird with a sword-like beak, a venomous pit viper, and a new kind of snakehead fish are among the more than 300 new creatures discovered in the Eastern Himalaya in the past ten years, conservationists say.

An ancient bronze figure that was underwater for 2,000 years is offering new clues to how some marine creatures absorb metals to create hard shells, scientists say.

Drain the ocean and what have you got? For starters, a chasm to rival the Grand Canyon and a mountain taller than Everest--as revealed by accurate, eye-popping new digital illustrations.

Two spiders sported adaptations that helped them survive the brutal beginnings of earthly life, new 3-D imaging shows.

A seal hunter bloodies the waters, models strut the world's longest catwalk, mourners remember Hiroshima, and more in this week's best news photos.

With a massive mirror 34 feet wide, the newly inaugurated Gran Telescopio Canarias in the Canary Islands is the largest optical observatory on Earth ... although it might not hold that title for long.

Just as Hercules had the multi-headed hydra to contend with, ocean predators tussle with two-headed sea snakes—or so it appears.

Once Earth's fourth largest lake, the Aral Sea has shrunk substantially, with its eastern section losing about 80 percent of its water between 2006 and 2009, new satellite images show.

See a possible meteorite on Mars, a space shuttle on an electric morning, an astronaut's-eye view of dusk on Earth, and more in the week's best space pictures.

A new dink frog discovered in southern Costa Rica sports different colors depending on its age and sex—a rare trait among frogs, a new study says.

Denture wearers take note: Science is one step closer to growing replacement teeth. For the first time an honest-to-goodness tooth has grown from stem cells in a jaw.

Using aerial pictures of crop fields near Venice, researchers have made a detailed map of the buried Roman port of Altinum, revealing the remains of city walls, a network of streets and canals, homes, and even monuments such as an amphitheater and a basilica.

An Irish snorkeler gets bogged down, a Japanese polar bear takes a plunge, a bridge collapses in quake-ravaged China, and more in this week's best news photos.