Space

Do all planets in our Solar System orbit the same way?

All of the planets and nearly all asteroids in the Solar System
orbit in the same direction (anticlockwise if you were looking
down on the Solar System from way above the Earth’s north
pole) – and they all orbit close to the same flat plane as well. This is
because they, along with the Sun itself, all formed from the same
protoplanetary nebula – a cloud of interstellar gas and dust that began
to collapse under its own gravity around 5 billion years ago.
As the nebula became more concentrated, it flattened out and
began to spin more quickly, and the Sun, asteroids and planets then
condensed out of different parts of this flattened disc.
The few objects that follow backward, or retrograde, orbits – and
those whose orbits are sharply tilted to the lane of the Solar System –
tend to be the result of close encounters with the disruptive gravity of
a giant body like Jupiter.

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AEPC

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