10 questions
what is the coldest planet in our solar system
pluto
Neptune
uranus
make make
what is the furthest among them measured distances
inner planets
outer planets
interstellar space
Kuiper belt
Inter-galactic space
Why is an astronaut in space considered "weightless"?
Their mass is so small compared to the Earth that gravity doesn't affect them.
Gravitational force decreases over long distances.
Gravitational force pushes objects away from each other at long distances
Objects far from Earth have less mass.