First they study the subject, then they come up with questions that other people may want to know the answer to. After that, they use their studies and knowledge of physics to come up with a believable and reasonable way that something could be what they think it is.
interstellar dust
The small ones get to be "swallowed up" by the bigger ones, because of gravity. Eventually, the planetesimals can develop into planets by this process, which called "accretion".
The asteroid belt.
Studying the earth helps scientists to understand other planets since the earth is part of the solar system. Scientists use the features of the earth to compare them with what other planets hold.
what molecule do scientists look for when they are investigsating the possibility of life on other planets
interstellar dust
Planetary scientists still aren't sure. I'll let someone else go into the theories if they want to do that.
Venus has a "retrograde" rotation, compared to its orbit around the Sun. Unlike the other major planets, Venus rotates in a slow clockwise direction (from east to west).Scientists speculate that Venus may have collided with another large object during its early formation. Similar theories have been advanced for the formation of our Moon.
First they study the subject, then they come up with questions that other people may want to know the answer to. After that, they use their studies and knowledge of physics to come up with a believable and reasonable way that something could be what they think it is.
Both new planets and stars are being formed. Scientists are actually watching the formation of planets and keeping track of which ones would be able to support life.
Planets play no role in land formation of the earth
Yes, according to many scientists' theories, the sun is pulling the planets closer to it. JUST KIDDING! No idea really...
The small ones get to be "swallowed up" by the bigger ones, because of gravity. Eventually, the planetesimals can develop into planets by this process, which called "accretion".
They are gas planets
Mars is farther from the Sun than the Earth. The requirements to develop life on Mars were far less than on the Earth which had, at the time of the planets' formation, the ideal conditions to develop life.
The asteroid belt.
Good question !!! Is there ACTUAL proof of any kind that there is life in space?? Most planets are either to hot, cold, or windy to harbor life. do some research on the planets & u will find out what I mean. Yours truly, Bethany a.k.a. pianoplayer