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SAN FRANCISCO (Reuters) - A NASA rover scouting for signs of past water on Mars has found the strongest evidence yet -- a vein of gypsum, a mineral deposited by water, protruding from an ancient rock.

The rover, called Opportunity, and its twin, Spirit, arrived on opposite sides of Mars in January 2004. Over the years, the rovers, aided by several orbiting ...

The European Space Agency said it will no longer try to make contact with Russia's stranded Mars probe Phobos-Grunt if attempts made Friday fail.

"We have already told our colleagues at the (Russian) Lavochkin institute that if communication bids during the day and tonight fail we will stop," Interfax news agency quoted ESA's representative in Russia, Rene Pichel ...

CAPE CANAVERAL, Florida (Reuters) - An unmanned Atlas 5 rocket blasted off from Florida on Saturday, launching a $2.5 billion nuclear-powered NASA rover toward Mars to look for clues on what could sustain life on the Red Planet.

The 20-story-tall booster built by United Launch Alliance lifted off from its seaside launch pad at Cape Canaveral Air Force Station at ...

NASA's Curiosity rover, the biggest, most sophisticated robotic explorer ever built, blasted off Saturday on a journey to Mars, where it will hunt for signs life once existed there.

Curiosity, which is the size of a large car and weighs in at one ton, has a laser beam for zapping interesting rocks and a tool kit for analyzing their ...

CAPE CANAVERAL, Florida (Reuters) - An unmanned Atlas 5 rocket blasted off from Cape Canaveral Air Force Station in Florida on Saturday, launching a $2.5 billion nuclear-powered NASA rover toward Mars to look for life habitats there.

The 20-story-tall booster built by United Launch Alliance lifted off from its seaside launch pad at 10:02 a.m. EST (3:02 ...

CAPE CANAVERAL, Florida (Reuters) - An unmanned Atlas 5 rocket blasted off from Cape Canaveral Air Force Station in Florida on Saturday, launching a $2.5 billion nuclear-powered NASA rover toward Mars to look for life habitats there.

The 20-story-tall booster built by United Launch Alliance lifted off from its seaside launch pad at 10:02 a.m. EST, soaring through ...

The US space agency plans to launch on Saturday the most powerful and advanced robotic rover ever built to explore Mars and hunt for signs that life may once have existed on the red planet.

The Mars Science Laboratory, an elite six-wheeled vehicle powered by nuclear fuel, is scheduled to launch at 10:02 am (1502 GMT) from Cape Canaveral ...

CAPE CANAVERAL, Florida (Reuters) - A nuclear-powered rover as big as a compact car is set to begin a nine-month journey to Mars this weekend to learn if the planet is or ever was suitable for life.

The launch of NASA's $2.5 billion Mars Science Laboratory aboard an unmanned United Launch Alliance Atlas 5 rocket is set for 10 ...

By Irene Klotz

CAPE CANAVERAL, Florida (Reuters) - A nuclear-powered rover as big as a compact car is set to begin a nine-month journey to Mars this weekend to learn if the planet is or ever was suitable for life.

The launch of NASA's $2.5 billion Mars Science Laboratory aboard an unmanned United Launch Alliance Atlas 5 rocket is ...

The US space agency has postponed by one day its plan to launch the biggest rover ever to Mars, with the liftoff of the Mars Science Laboratory now set for November 26.

The delay will "allow time for the team to remove and replace a flight termination system battery," NASA said in a statement.

The launch is now scheduled for ...