Bennu contains minerals and thousands of organic molecules, including the chemical components that make up DNA.

These cosmic strings could stretch the length of the universe. A piece of this string only 1.6 kilometers long would weigh more than the earth. Others have added to the theory: That symmetry still ...

Essentially, the astronomers' theory is panspermia with a twist ... but rather was brought here through comets and meteorites from a cosmic biosphere spanning across various galaxies.