No. We have only been able to walk on Earth. (And the moon.)
An Astronomer is a scientist who studies the stars and planets.
Scientist's are discovering new planet's all the time. They call these planets exoplanets. As of November 2009 there are 404 planets outside of our own solar system.
An Astronomer is a scientist who studies the stars and planets.
Ptolemey is a scientist that studied the planets and he discovered new planets in place.
None.
Pretty sure it was Ptolemy.
An astronomer.
Earth's scientist have not found life on other planets to date.
Sir Isac Newton was the scientist who discovered why the planets stay in orbit.
By triangulation method.
astronomist
ya,ofcourse from my view