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What else can I help you with?
How many planets have astronauts landed on?
earth
What planets have astronauts touched?
Astronauts have landed on the Moon, which is not a planet but a natural satellite of Earth. Humans have not yet landed on any other planets in our solar system.
Has a space shuttle landed on any planets?
Once per completed mission, the shuttles have landed on Planet Earth.
Which planets have scientists landed a space probe?
mars and venus
Why can't gas leave the gas planets?
The gas of the gas planets is kept in place by gravity.
Are the gas planets bigger or smaller than the rocky planets?
the gas planets are bigger than the rocky planets
Can gas planets have craters?
No. Gas planets do not have solid surfaces.
Which planets are terrstrial which planets are gas planets?
Terrestrial:Mars Gas: Saturn, Jupiter, Uranus and Neptune
What set of planets have more moons terrestrial or gas?
gas planets
Why do outer planets have gas?
because the outer planets are made of gas.
What are the outer planets and how are they similar?
The outer planets are the planets that are made of gas. Each of the outer planets are mad of gas and can not hold life.
What planets have had people land on them?
The Earth is the only planet people have landed on. Humans have landed on Earth's Moon and have landed robotic probes on the surfaces of Mars, Venus, and Saturn's Largest moon Titan.
