In 1609, Mars was viewed by Galileo, who was first to see it via telescope. As for it being observed, it was observed by many ancient civilizations therefore pin-pointing of the 'real' discovering point un-obtainable. 2008-1609 = 399 years
As long as the solar system has been around.
Mars has been in space for as long as any other planet, such as, earth.
John Glenn has never been to Mars, nor has any other human being.
Mars' year is 687 Earth days long because it takes that amount of time for the planet to complete one orbit around the Sun. Mars is farther from the Sun than Earth, so it travels a greater distance in its orbit, resulting in a longer year.
Mars does not rotate around the Sun. It revolves around the Sun. It takes Mars about 687 Earth days for Mars to revolve once around the Sun.Planets and moons rotate about their own axes, but they revolve around the Sun (for planets) or (for moons) other planets.
As long as the solar system has been around.
It's Jupiter that has the long lived storm, not Mars
mars has been a planet for about 4.6 million years.
2:12:15:40 sols:hours:minutes:seconds
Its the other way around. Mars revolves around the Sun, with a period of 687 Earth days.
687days
It takes Mars 1.9 Earth years to orbit around the Sun.
Mars takes about 687 earth days to rotate around the Sun
Mars does not rotate around the Earth. It rotates around the Sun, just like all the other planets/
It takes Mars 686.971 days to orbit the Sun.
That is true; these gullies have been seen by Mars landers.
668.6 days