What is special about this orbit is that it lets the telescope stay in line with the Earth as it moves around the Sun. But then gravity from Earths huge mass began to take effect.
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In the distant past the Moon was rapidly spinning close to the Earth.
. This value remains about the same relative to a stationary orbital plane throughout the. Earths orbital plane is known as the ecliptic plane and Earths tilt is known to astronomers as the obliquity of the ecliptic being the angle between the ecliptic and the celestial equator on the celestial sphere. Getting Webb to its orbit around L2 is like reaching the top of a hill by pedaling a bicycle.
Its called synchronous rotation and is a result of the gravitational tug of war between the Earth and the Moon. Tidal forces allowed the Moon to drift away from the Earth in its orbit and slowed its spin. This allows the satellites large sunshield to protect the telescope from the light and heat of the Sun and Earth and Moon.
It is denoted by the Greek letter ε. Earth currently has an axial tilt of about 2344.
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