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A planet is a non-luminous approximately spherical solid or gas that is a satellite of a star and that clears its orbital path of any smaller bodies.
OR A planet is a solid orbiting body of a star, leaving comets out of the discussion. I have trouble thinking of a planet as a gas.
What else can I help you with?
How do you define a day in astronomy?
A day is defined as the time it takes a planet to make one rotation on it's axis.
How do you define the word 'galaxy' in astronomy?
A galaxy is a vast self-gravitating structure of interstellar matter, energy, and forces.
A sentence with the word astronomy?
Astronomy is a long word.
What does Saturn have to do with astronomy?
Saturn is a planet.
What do you call the study of the planet?
astronomy
How do you define a 'star' in physics and astronomy?
In physics and astronomy, a star is a huge globe of plasma that emits its own radiation.
What is the study of things beyond planet earth?
astronomy
Why is Jupiter related to astronomy?
Astronomy is the science of looking at the sky to see stars, planets and other things in space. As Jupiter is a planet that can be seen, it is related to Astronomy.
What is a sentence using the word astronomy?
My brother is studying astronomy.
What is the greek root word of astronomy?
The Greek root word of astronomy is "astron," which means star.
How do you understand planet earth?
through the study of space and astronomy
Which planet is 1.00ua from the sun?
The Earth. (I teach Astronomy - if that helps).
