How the second known interstellar visitor makes ‘Oumuamua seem even odder
New observations show that 2I/Borisov looks like a comet, just what astronomers expected
The second mysterious interstellar object found zipping through the solar system, 2I/Borisov, looks like a run-of-the-mill comet. That stands in stark contrast to the first known interstellar object, ‘Oumuamua (illustrated).
Stuart Rankin/Flickr (CC BY-NC 2.0)