What Planet Struck Earth?
Theia Is a Hypothesized Ancient Planet in the Early Solar System That, According to the Giant-Impact Hypothesis, Collided with the Early Earth Around 4.5...
Theia is a hypothesized ancient planet in the early Solar System that, according to the giant-impact hypothesis, collided with the early Earth around 4.5 billion years ago, with some of the resulting ejected debris gathering to form the Moon.
Where is Theia planet now?
A new study led by Qian Yuan, a geodynamics researcher at Arizona State University (ASU), Tempe, suggests that the remnants of Theia is still inside Earth, probably located in two continent-size layers of rock beneath West Africa and the Pacific Ocean. Seismologists have been studying these two rock layers for decades.
What planet is behind Earth?
The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and then the possible Planet Nine. If you insist on including Pluto, it would come after Neptune on the list.