AstronomyOctober 1, 2020
Everything Scientists Know So Far about the First Interstellar Objects Ever Detected
Strange bodies from beyond the solar system have defied predictions
Stories by David Jewitt
David Jewitt is an astronomer at the University of California, Los Angeles, where he studies the primitive bodies of the solar system and beyond.
Space & PhysicsMarch 1, 2015
Earth's Water May Have Come from Comets, Asteroids or Something Else Entirely
To discover the origin of the oceans, scientists are investigating our solar system’s farthest reaches and earliest moments