Question

Ajutor primul exerciţiu vărog!!!

Answer 1

a. According to the Big Bang theory, between 10 billion and 20 billion years ago an enormous and powerful explosion shot concentrated matter and energy in all directions.

b. Some planets have moons and satellites because they are large enough and have enough gravity to attract matter while others don't.

c. Belgian priest George Lemaitre was the first to claim that there must be an event from which the Universe started. Later, Edwin Hubble found experimental evidence to support Lemaitre's theory.

c. Nowadays, the matter inside the galaxies continues to race away from the area where the Big Bang occurred.