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Russian scientists were racing against the clock Wednesday to find a way to fire the engines of an unmanned probe destined to collect soil samples from a moon of Mars, after equipment failure shortly after launch left it stuck in Earth orbit....

A small asteroid zipped by Earth well inside the orbit of the moon on Friday, marking the second known space-rock encounter for our planet over the past week, NASA said.

A pair of spacecraft rocketed toward the moon Saturday on the first mission dedicated to measuring lunar gravity and determining what’s inside Earth’s orbiting companion — all the way down to the core. “I could hardly be happier,” said the lead scientist, Maria Zuber. After two days of delays and almost another, “I was trying to be as calm as I could be.”

This month's full moon will pass almost directly through the center of Earth's shadow on Wednesday in what will be an unusually long total eclipse of the moon, 100 minutes. The next total lunar eclipse of exceptional length will be July 27, 2018, and will last 106 minutes.

Scientists analyzing bits of hardened lava from long-ago lunar eruptions found about as much water as in similar magmas on Earth.

A small asteroid passed within the moon's distance from the Earth on Wednesday morning, and another will do likewise later in the day, space watchers say.

The moon is shrinking ever so slightly, but there is no cause for alarm, according to a new study that has discovered a clutch of previously unseen faults on the lunar surface from photos taken by a NASA probe.

The moon's interior may harbor 100 times more water than previous estimates, according to a new study that took a fresh look at samples of moon rocks collected by Apollo astronauts nearly 40 years ago.

Saturn's largest moon, Titan possesses an ammonia and methane atmosphere that obscures its frozen surface from view. Since a 1980 Voyager I flyby, ...

A radar experiment aboard India's Chandrayaan-1 lunar spacecraft detects large deposits of water ice near the Moon's north pole.