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The rotation curve of the outer portions of the Galaxy revealed what about its mass?
Like latitude on Earth, ________ in the sky is measured in degrees north and south of
the equator.
Mass added to a pulsar from its companion can speed it up into a ________ pulsar.
What are thought to be some possible causes of triggering the contraction of an
interstellar cloud?
Type ________ supernovae produce no neutron stars, only ejected debris.
The twelve constellations through which the Sun passes are signs of the ________.
All globular cluster stars belong to Population ________.
Contrast spring and neap tides.
It was ________ in the Galactic disk that threw Herschel's model of the size and
structure of the Galaxy off badly.
Why does the present method of finding extrasolar planets not favor finding solar
systems like ours?
Galaxies in all directions appear to be red shifted, as if rushing away from us in the
center of the universe. How does the cosmological principle handle this problem?
How does the cosmic background radiation relate to the Big Bang?
How does the rotation of Venus' clouds compare to the rotation of its surface?
Why is the angular resolution of radio telescopes much worse than that of smaller
optical telescopes?
The Sun's blackbody curve peaks in the ________ portion of the spectrum.
What class of asteroids is a threat to Earth and other terrestrial planets? Why?
