This happens when the moon comes between Earth and the Sun.
What is a solar eclipse?
100
A small, hot, dim star that is the leftover center of an old star.
What is a white dwarf?
100
A small body of ice, rock, and cosmic dust that follows an elliptical orbit around the Sun and gives off gas and dust in the form of a tail when it passes the Sun.
What is a comet?
200
The outermost layer of the Sun.
What is the Corona?
200
The Great Red Spot.
What is Jupiter?
200
A natural or artificial body that revolves around a planet.
What is a satellite?
200
A gigantic explosion in which a massive star collapses and throws its outer layers into space.
What is supernova?
200
A small rocky object that orbits the Sun usually in a band between the orbits of Mars and Jupiter.
What is an Asteroid?
300
The visible layer of the Sun.
What is the Photosphere?
300
The Greenhouse Effect
What is Venus?
300
The birthplace of stars
What is a nebula?
300
A rapidly spinning neutron star that emits rapid pulses of radio and optical energy.
What is a pulsar?
300
A relatively small, rocky body that travels through space.
What is a Meteoroid?
400
The layer of the Sun between the Corona and the Photosphere.
What is the Chromosphere?
400
The planet that orbits at a 90 degree angle where one pole always faces the Sun.
What is Uranus?
400
This happens when Earth comes between the sun and the moon.
What is a lunar eclipse?
400
An object so massive and dense that even light cannot escape its gravity.
What is a black hole?
400
A meteoroid that reaches the Earth's surface without burning up completely.
What is a meteorite?
500
Gases circulate in this layer of the Sun.
What is the Convective Zone?
500
The Great Dark Spot
What is Neptune?
500
The change in the sunlit area of one celestial body as seen from another celestial body.
What are phases?
500
A very luminous star-like object that generates energy at a high rate, thought to be very far away.
What is a Quasar?
500
A bright streak of light that results when a meteoroid burns up in the Earth's atmosphere.