Yes. You can see Mars from Earth. It was discovered by primitive people who watched the night sky and notice that some of the objects, later called planets, did not move with the stars.
No. The first person to look down discovered Earth.
Earth was discovered at the beginning of civilization because mankind was standing on it. Mars was discovered by early intelligent human beings that looked up in the sky one day and saw something red glowing off in the distance and they called it Mars.
See related questions.
Earth, then Jupiter, Saturn, Venus, and Mars.
Yes, you can see Earth from Mars at midnight, just as we can see Mars from Earth. However, the visibility will depend on the relative positions of the planets in their orbits at that time. Earth will appear as a bright point of light in the night sky of Mars.
Not sure what you mean, once you see something you have discovered it.
Yes, Mercury, Venus, Mars, Jupiter and Saturn had been discovered several millennia before the invention of the telescope.
Mars can be seen from the Earth without a telescope, people have known about its existence since the stone age.
No, you can't ever see a crescent Mars from Earth. Because Mars is farther from the sun than Earth is, there is no point at which less than half of Mars' illuminated size is facing Earth. In other words Mars will always appear as "full" or "gibbous."
Mars was not discovered. Ancient humans could see it any time they raised their eyes to the night sky. It is about the same as discovering clouds. no not really
You can see Earth, Mars, the Moon and galaxies!
Without a telescope you probably couldn't see earth's moon from Mars.