interstellar

When watching starry sky at the night, numerous twinkling stars and that enormity, what the heavenly cover offers for everyone to see, one surely convince himself how small people are compared to the huge or probably infinite size of the universe. But, althouhg the universe is enormous big space, is the universe or cosmos really infinite? And what means that universe would be infinite? And, on the other hand, what means if universe would be finite?