- Why is there so little evidence on earth’s earliest history and therefore the period when life first began on our planet?
- Describe how you might use the colour of the galaxy to determine something about what kinds of stars it contains.
- Astronomers have been making maps by serving slice of the universe and seeing where the galaxies lie within that slice, if the universe is isotropic and homogeneous, why do they need more than one slice/ Suppose they now want to make each slice extend further into the universe. What do they need to do?
[Solved] Astronmomy Discussion
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