… but the equilibrium is unstable. In order to prevent the universe from either expanding or contracting, Einstein introduced a scalar field.
Galaxies
Galaxies. What is a galaxy? A galaxy is a large grouping of stars, gas, and dust in space that is held together by gravity. The largest galaxies contain.
ESTALLIDOS VII Calibration of star formation rate tracers for short and long-lived star- forming episodes Héctor Otí Floranes Dirigido por J. M. Mas Hesse.
M 51 Galaxy merger simulation Discussion What do you think is going to happen if two large spiral galaxies collide and merge? What happens.
