expansion of the universe

Where do scientists know aliens?
The vast, seemingly infinite, invisible universe may be home to alien inhabitants.
What does the crack of the universe look like?
The universe can exist these
The reason for space is dark despite many stars shining
The expansion of the universe and the great distance between the stars make the space of the universe dark even with numerous stars shining.
68% of dark energy in the universe may not exist
Hungarian scientists prove that mysterious dark energy accounting for 68% of the universe may not exist.