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Questions regarding the Hubble space telescope, a scientific telescope on a satellite orbiting Earth.
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a relatively inexpensive Newtonian telescope, in which the tube assembly slips freely in the lower base.
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Questions regarding structures designed to aid in the observation of astronomical objects.
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Questions regarding Uranus, the 7th planet from Earth's sun.
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a planet that has a compact rocky surface like the Earth's; the four innermost planets in the solar system.
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Questions about Titan, the largest moon of Saturn.
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Questions regarding the large "cloud" of small bodies that forms a sphere around the solar system.
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Questions regarding a family of extremely low-mass, electrically neutral particles described in the Standard Model of particle physics.
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Questions regarding the former 9th (now dwarf) planet Pluto.
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Questions about the early phases of the star formation process. A protostar is a large mass of gas that results of the contraction of a molecular cloud.
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Questions about patterns formed by group of prominent stars in the night sky.
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The corresponding particles of opposite charge to the particles of conventional matter (e.g. the positron is the antiparticle of the electron)
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