There are two small moons in orbit around Mars today, but both may be remnants of a much larger moon that had enough of a gravitational pull to drive tides in the Red Planet's lost lakes and seas ...

The National Sea Rescue Institute (NSRI) has urged beachgoers to exercise caution during the new moon spring tide, which peaks on Saturday. This natural phenomenon occurs when the sun, moon, and Earth ...

Regular, alternating layers in Gale Crater may have been deposited as the result of tides raised by a moon at least 18 times the mass of Phobos, a study says.

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and ...

A supermoon occurs when a full or new moon coincides with the Moon’s closest approach to Earth, making it appear bigger and ...

For more than a decade, scientists have accepted that Titan, Saturn’s biggest moon, has a subsurface ocean of liquid water. A ...

Why does the same side of the Moon always face Earth? I know this is called tidal locking, but what is the underlying ...

California is a magical place in the winter, the monarchs return to the state to overwinter, Santa Claus arrives on a surfboard, and twice in two months, the waves get very, very high. King Tides, the ...

Mars looks quiet today, but new research suggests the planet’s surface still carries the rhythm of a vanished companion.

It's been 150 days since the Moon has been on a collision course, headed right toward Earth. As the Moon gets closer, ocean tides are rising. Our cities are being flooded and destroyed. Volcanoes and ...

The Moon is one of the most charming objects in the night sky, casting its beautiful white light on the Earth. It is also its ...