Question

Are we alone in the universe if it is then give proof​

Answer 1

Answer:

Explanation:we are not alone we are United in these earth

Answer 2

No we are not alone in the universe.

But we have never seen any alien because

1) Aliens never came because of a physical difficulty "that makes space travel infeasible," which could be related to astronomy, biology or engineering.

2) Aliens chose never to come to Earth.

3) Advanced civilizations arose too recently for aliens to reach us.

4) Aliens have visited Earth in the past, but we have not observed them.