Homework 12: Due November 28
- Read Mystery 4.
- What is the fundamental observation that makes astronomers think that dark matter exists?
- Why does MoND (the modification of the idea of gravity) not satisfy scientists as an explanation for dark matter?
- What was Einstein's biggest 'blunder'?
- What observations did Hubble make to show that the Universe is expanding? Can you think of another way to interpret his results?