State Hubble's law.
Explain how the Hubble constant can be used to determine an age for the universe.
The Hubble constant is estimated to be 2.2 × 10–18 s–1
Calculate the age of the Universe in years.
1 year = 3.15 × 107 s
Hubble’s law and the idea of the expanding Universe support the Big Bang theory of the origin of the Universe. Table 1.1 contains statements about this theory.
Place ticks (✔) next to the statements that are correct.
Statement | Correct (✔) |
The universe began 14 million years ago | |
There was a giant explosion known as the big bang | |
This caused the universe to expand from a single point | |
It heated as it expanded to form the universe today | |
Each point in the universe expands away from the others | |
So, the further away galaxies are the slower they are moving |
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