astrobiology

Scientists have detected all five canonical nucleobases in pristine samples from asteroid Ryugu, the first confirmation of a complete set of DNA and RNA building blocks in material collected directly from space.

Six months of observations of the third interstellar object ever detected have uncovered water, methane, and hydrogen cyanide in its coma--and a Jupiter flyby on March 16 could yield the closest-ever look at an interstellar visitor.