why earth is considered as unique planet?
Answers
Because it has its own atmosphere
It has the most important thing, water.
Life is known to exist on only earth
As far as modern science goes it isn’t, but it is a rare type of planet for various reasons.
First it was formed by a giant collision late in the accretion process, which formed the Earth-Moon system.
As a result of this, Earth has a long-lasting liquid core, plate tectonics which recycle rocks, water and CO2, a magnetic field which protects life from damaging radiation, and a large moon which keeps its axis stable, keeps recycling minerals, and reshaping land masses with tides and provides an intertidal zone where life can transition from sea to land.
Other moons in the Solar-System seem to be mainly smaller captured asteroids or planetoids or formed along with the planet during accretion.
Earth has oceans of open water, and is in the “Goldilocks zone” of the Solar System.
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