Comet-orbiting Rosetta

Scientists using Europe's comet-orbiting Rosetta spacecraft have discovered that the complicated ancient body is coated with surprisingly simple organic molecules and surrounded by a changing cloud of gases, according to new research released on Thursday.

Scientists using Europe's comet-orbiting Rosetta spacecraft have discovered that the complicated ancient body is coated with surprisingly simple organic molecules and surrounded by a changing cloud of gases, according to new research released on Thursday.