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A neutron star ________ rapidly.
The distribution of stars in the Galactic Bulge reminds us of the distribution of objects
in the solar system's ________ Belt beyond Neptune.
The complete spectral classification of our Sun is ________.
The Galactic Disk has been flattened by the ________ of the Galaxy.
The central engine for active galaxies is believed to be a ________.
Besides comets and meteorites, we also find organic molecules in the ________ clouds
in deep space.
Because he failed to observe stellar ________, Aristotle wrongly concluded we could
not be in orbit around the Sun.
A stars total velocity is a combination of its ________ and ________ velocities.
While featureless in visible light, we can see some detail in Venus' clouds using
________.
What is meant by tidal locking?
The most famous and long lasting storm in the solar system is ________.
At what point does the accretion process turn a clump of debris into a planetesimal?
All planets lie in orbits close to the ________ plane.
Using Jupiter's axial tilt, explain why its rings are harder to observe from Earth than
even the dark rings of Uranus.
The ________ epoch happened when the superforce separated into the electromagnetic,
strong, and weak forces, with a tremendous release of pressure.
Both He3 and He4 are important in the proton-proton cycle. How are they different, and
which comes first?
General Relativity is Einstein's theory of ________.
Adams and Leverrier predicted the position of ________, which Galle confirmed.
Why did Saturn's rings appear very different in 1995 and 2003?
