Easily, if it's above the horizon. When it's up, it's one of the brightest things in the sky... at its brightest, it's third (with the Moon and the Sun being second and first respectively).
Venus is one of the planets that is visible without a telescope. The planet has been known since antiquity. Galileo was the first astronomer to study Venus through a telescope.
Earth does not need a telescope, look down.
Yes, Earth can be seen at night without a telescope. It is visible from space station and other spacecraft. However, it is not visible to the naked eye from the surface of the Earth at night.
no because its far away
Yes, but you need really clear skies to see it.
Yes, the planet Mars is visible to the naked eye.
The name of Venus comes from the Roman goddess of love and beauty. Venus has been known since ancient times because it can be seen in the sky without a telescope.
Yes - Many times.
Yes, but ONLY in ideal conditions, so realistically, no.
Yes, Mercury, Venus, Mars, Jupiter and Saturn had been discovered several millennia before the invention of the telescope.
He did not discover the planet Jupiter. He only used his telescope to see its four largest moons. The planet is and always has been visible to the naked eye and was known to people since ancient times.
Yes. Mars has been known since ancient times, long before the telescope was invented.