How does earth affect the solar system?
Answers
1) By direct contact as in a collision;
2) By their gravitational forces and;
3) by their electromagnetic radiation.
The Sun affects the Earth by its gravity which keeps the Earth in its orbit. The Sun is not, obviously, in direct physical contact with the Earth, however, it does send our way streams of charges particles either as part of the general solar wind, or as high energy particles produced during solar flares. The solar wind affects the Earth's Van Allen radiation belts and the shape of the Earth's magnetic field, giving it a comet-like shape pointed directly away from the Sun. The charged particles affect the Earth by causing Aurora Borealis and upsetting the structure of the ionosphere which interferes with radio communication at low frequencies.