if you mean stand, it never was in the middle of the solar system
If you mean sand then i have no idea what you are saying...
Yes everything in the Solar system rotates around the sun.
Probably when the Earth and the solar system were very young, and the solar system was still full of stray junk. In the 4 billion years since, the majority of the stuff in the inner solar system has already crashed into the Sun, Jupiter, or the Earth, or the Moon, or been thrown out of the solar system.
No. It is still in the solar system.
the earth and the moon stays in orbit while the sun still hasn't explode....
In the geocentric system, the Earth is considered to be the center of the solar system. The Moon, the planets, the Sun, and the stars all rotate around the Earth (which stays still), with uniform circular motion. They compose the heavens, which are considered to be ethereal and unchanging.
In our solar system: Mercury, Venus, Earth, Mars and, if you still want to count it, Pluto.
In our solar system: Earth, Mars, Jupiter, Saturn, Uranus, Neptune and, if you still want to count it, Pluto.
No. Earth is still the only known object in the solar system that harbors life.
Yes. It is never going to leave the solar system.
The obvious answer is "Earth", apart from here, Mars is probably the closest - still pretty unpleasant place to live though.
All the comets that have been seen in history were in the solar system and most still are.
Pluto is still in the solar system. They just changed its category from "planet" to "dwarf planet."