Read the text below once and calculate (roughly) the number of mistakes. Click on the option that corresponds to your estimate. Check the solution before going on to the next question.
The universe is a mystery since a lot of centuries. There is two problems in cosmology. The first mystery is lack of mass. We explain it with the dark matter. Only 10% of matter is know. Missing matter constituate the 90 other per cent. And we don't find them yet. The other problem is the relation between the gravity and the energy. The universe is in expansion and the most he expanse, the most energie he create. Scientist have a new explanation which could explain both phenomenals. In the new theory, dark energie and gravity repulse themselves.
