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Continue Learning about Earth Science

Why does the moon orbits the earth?

Gravitational forces cause the Earth to pull on the Moon, and the Moon to pull on the Earth (Earth is about 81 times as massive). Since the Moon is travelling with sufficient velocity, it does not fall into the Earth, but rather orbits around the Earth. The mutual attractive force between the Earth and Moon, due to gravity, keeps the two bodies in a state of mutual revolution. If the force of gravity didn't exist, then the Moon would take off from the Earth in a straight line, and the Earth would likewise take off from the Sun.


Why was the moon red this morning?

The moon appeared red this morning due to a phenomenon called a "blood moon," which occurs during a total lunar eclipse. During this event, the Earth blocks sunlight from reaching the moon directly, causing the moon to take on a reddish hue due to the scattering of light in Earth's atmosphere.


How long does it take for the Earth's magnetic field to reverse?

The Earth's magnetic field can take thousands of years to reverse.


384000 km away from the earth?

Being 384,000 km away from Earth would place you in the vicinity of the Moon. At that distance, you would be considered to be in deep space beyond Earth's immediate surroundings. It would take significant time and effort to travel that distance in a spacecraft.


How long does it take for a microwave radar signal to travel from Earth to the Moon and back?

Approximately 2.5 secs. A 'microwave' is an electro-magnetic radiation, in the same manner as light, and uv. radiation. Being an electro-magnetic radiation it will travel at the speed of light, which is 'c' = 3.8 x 10^8 m/s