Dark matter, dark energy and reading space data
What galaxy rotation and the speeding-up expansion suggest we cannot yet explain, and practice reading tables of space data for patterns, ratios and odd results.
You will be able to
- Say what dark matter and dark energy are suggested to explain
- Read a pattern and calculate a ratio from a table of space data
- Spot a result that does not fit and leave it out of a mean
20 minutes, 9 exam-style questions.