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.
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.
Scientist have been sending rovers and astronauts to the other planets to detect life on other planets. (I think I'm not 100% sure,sorry)
Earth's scientist have not found life on other planets to date.
An astrobiologist.
Scientist know this by the color difference on the planets surface.
interstellar dust
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.
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.
Johannes Kepler developed the laws of planetary motion.However he was German not Austrian.
An Astronomer is a scientist who studies the stars and planets.
Planets play no role in land formation of the earth
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".
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.
An Astronomer is a scientist who studies the stars and planets.
The asteroid belt.
Planetesimal hypothesis is the theory of the formation of the planets. It is believed that cosmic dust particles continuously stick together resulting in the formation of the planets.
Ptolemey is a scientist that studied the planets and he discovered new planets in place.