Pethias

Venus rotates backwards compared with most planets, so the Sun appears to rise in the west and set in the east.

Black holes don’t “suck” everything in. If the Sun were replaced by a black hole of the same mass, Earth would continue orbiting it almost exactly as it does now.

If Jupiter had become about 80 times more massive, it could have ignited nuclear fusion and become a star.

The footprints left by Apollo astronauts are expected to remain on the Moon for millions of years because there is no wind or rain to erase them.

Saturn would float in water if you had an ocean large enough. Its average density is lower than water.

Bananas are radioactive (but harmless).

There are more trees on Earth than stars in the Milky Way.