Hebrews 13:2 "Do not neglect to show hospitality to strangers, for by this some have ENTERTAINED ANGELS WITHOUT KNOWING IT."
When God sends angels to earth to minister, they look JUST LIKE us! Abraham and Lot encountered these folks. And in Genesis Chapter 6 fallen angels came to the earth, dwelt among men, and cohabited with human females. Thus the Nephilim (giants) were born on the earth.
Isaiah 40:22 "....Who stretches out the heavens (confirmation of the "big bang theory") like a curtain and spreads them out like a TENT TO DWELL IN."
So, the heavens are like a "tent to dwell in"?! In our Milky Way Galaxy there are a billion stars, and there are countless galaxies! Just in the tiny neighborhood immediately around our sun over 2000 planets have been discovered since the 1990's! Do we really have the audacity to believe that we are the only life in God's universe?
P.S. Right after the upcoming Rapture, the antichrist will claim that aliens have arrived at earth to remove the people, using this as a deception to keep people from believing the Rapture, which is found in numerous locations in both the Old and New Testaments.