How much do PLANETS wight?

Answer 1

If you mean "weight", it doesn't make much sense to talk about a planet's weight. What would you weigh it on? Astronomers talk about a planet's mass instead. The largest planet in our Solar System, Jupiter, has about 300 times the mass of Earth; the smallest one, Mercury, has 0.055 times the mass of Earth. You can look up the mass for other planets on the Wikipedia. Outside of the Solar System, planets that are several times as massive as Jupiter are known.