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Questions and Answers
What is the definition of a planet?
What is the definition of a planet?
- An object that orbits a star and is roughly spherical
- An object that orbits a star and has moons
- An object that orbits a star and has rings
- An object that orbits a star, is roughly spherical, and has cleared its neighborhood of other objects (correct)
What holds stars together in immense groups called galaxies?
What holds stars together in immense groups called galaxies?
- Nuclear fusion
- Dark matter
- Gravity (correct)
- Magnetic force
What makes up objects in the universe?
What makes up objects in the universe?
- Stars and Galaxies
- Matter and Energy (correct)
- Dark matter and Dark energy
- Planets and Moons
Which entity in the universe is defined as the inherent ability of a region of space?
Which entity in the universe is defined as the inherent ability of a region of space?
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Why is Pluto not considered a planet?
Why is Pluto not considered a planet?
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