How do planets stay suspended in space?
Why do planets float in space?
Why do some planets have rings? What determines their size and shape? All things are supposed to fall to the earth because of gravity, then why do clouds float? Why don't all planets have rings? What is a planet? Why don't space organizations try to send spacecraft to planets like Neptune or Pluto? Earth (planet): Why don't we fall directly in the earth from space? Does rotation of planet depends on its radius? Why cant we send space probes with orbits similar to that of comets? Why is Pluto no longer considered a planet? Why don't we send a big satellite dish up in space? Is it sad that other planets in our solar system look so lifeless? If Saturn is put in water, will it float? Does matter fall or float through space? How is the gravity of other planets measured? Is the Moon a planet? Why isn't Pluto a planet? Why do clouds float in the sky? Given the trillions of objects orbiting the sun in the Asteroid, Kuiper-Edgeworth and Oort Belts, why haven't more coalesced to form planets? Why didn't all the asteroids between Mars and Jupiter clump together, accrete and form planets instead of remaining billions of separate pieces? Would a helium balloon float upwards on Mars? Why is Space called Outer Space? Why was Pluto dropped as a planet? Why don't the metals on satellites and rockets boil away when we send them into space since there is no pressure in the vacuum of space? Is Pluto a planet?  Why don't gas planets have gas moons? Why are most planet orbits in our solar system on relatively the same 2D plane? What are the differences between planets, dwarf planets and asteroids? How do they measure gravity in other planets and stars? I have seen a video about space facts and it says that, "if Saturn is kept in water it floats". Is that true? If true, why? Is it the relative density? Why do people believe in Space Travel?