A newly funded concept envisions a kilometer-wide radio telescope built inside a crater on the far side of the Moon. Whoa.
Each of the cell-like structures in this image represents an area about the size of Texas.
Astronomers think aliens from other galaxies could be trying to communicate with us so Chinese scientists built a huge telescope to find out.
Arecibo Observatory, the world's largest radio telescope and an alien hunter's best bet at finding extraterrestrial life, could lose its funding and shut down.