Science

Like an earthquake is there is Moonquake ?

Like earthquake is there is Moonquake ? Indepth Video

The Moon (or Luna) is the Earth’s only natural satellite and was formed 4.6 billion years ago around some  30–50 million years after the formation of the solar system. The Moon is in synchronous rotation with Earth meaning the same side is always facing the Earth.The Moon has much weaker gravity than Earth, due to its  smaller mass, so you would weigh about one sixth (16.5%) of your weight on Earth. The Moon has no atmosphere. 

This means that the surface of the Moon is unprotected from cosmic rays, meteorites and solar winds, and has huge temperature variations. Moon is partly responsible for causing the tides of our oceans and seas on Earth,  with the Sun also having an effect.

However, as the Moon orbits the Earth it also causes a tide of rock to rise and fall in the same way as it does with the water. The Moon’s surface is actually dark. Although compared to the night sky it appears very bright, with a reflectance just slightly higher than that of worn asphalt. Each year, the moon steals some of  Earth’s rotational energy, and uses it to propel itself about 3.8 centimeters higher in its orbit.

The moon is not round (or spherical). Instead, it’s shaped like an egg. If you go outside and look up, one of the small ends is pointing right at you. And the moon’s center of mass is not at the geometric center of the satellite; it’s about 1.2 miles (2 kilometers) off-center. 

A moonquake is the lunar equivalent of an earthquake. The moonquakes are probably a result of the moon’s ongoing contraction. The moon is still tectonically active, like Earth, generating moonquakes as our planet creates earthquakes. The first spacecraft to reach the Moon was Luna 1 in 1959. This was a Soviet craft, which was launched from the USSR. It passed within 5995 km of the surface of the Moon before going into orbit around the Sun.

There is water on the Moon ! This is in the form of ice trapped within dust and minerals on and under the surface. It has been detected on areas of the lunar surface that are in permanent shadow and are therefore very cold, enabling the ice to survive.

A total eclipse happens when the dark silhouette of the Moon completely covers the intense bright light of the Sun. Only the much fainter solar corona is visible during a total eclipse. The Moon is moving approximately 3.8 cm away from our planet every year. It is estimated that it will continue to do so for around 50 billion years. By the time that happens, the Moon will be taking around 47 days to orbit the Earth instead of the current 27.3 days.

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