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daniellefong.com
| | tritonstation.com
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| | The distance scale is fundamental to cosmology. How big is the universe? is pretty much the first question we ask when we look at the Big Picture. The primary yardstick we use to describe the scale of the universe is Hubble's constant: the H0 in v = H0 D that relates the recession velocity (redshift)...
| | mathscholar.org
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| | singularityhub.com
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| | A series of controversies has rocked the field of cosmology. The standard model of the universe appears to be at odds with recent observations.
| | www.planetary.org
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| An introduction to backyard astronomy for amateur stargazers.