No human has really visited any planet other than Earth; the Moon isn't a planet.
However, spacecraft have visited other planets, such as the Spirit and Opportunity rovers, who went to Mars
A person who studies the planets and stars is an astrologist.
No person has ever travelled to Uranus. It is one of the outer planets in our solar system and is too far away for humans to visit with current technology. All observations of Uranus have been made by spacecraft and telescopes.
Mass does not change when one is traveling between planets, because mass is the measure of how much mater there is.
A person who studies space is called an astronomer. They observe and analyze celestial bodies such as planets, stars, and galaxies to better understand the universe.
No. Planets orbit suns, while moons orbit planets. Planets do not orbit planets.
In Athens, Greece
If you visit the NASA website or even search for the "Milky Way", you can get a list of planets in our solar system. There are only 9 planets, 8 if you don't count dwarf planet Pluto.
The firsrt priority in this venture is to make money.
Tim Berners Lee. It was called WorldWideWeb.
because they feel like it
a person who studies planets is a planetologist.
yes, yes you can
Of course we will. But shall we?
mars because the scientists are searching right now
Earth
don't be daft of course visit your profile is YOU not a person silly person
An astronomer.