‘Oumuamua may be a comet, not an asteroid
The object’s path through the solar system can’t be explained only by gravitational pull
![‘Oumuamua](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/06/062218_EC_comet-ticker_feat.jpg?fit=860%2C460&ssl=1)
ROCK RETHINK A new study suggests that the interstellar traveler ‘Oumuamua (illustrated) is a comet, not an asteroid like scientists had proposed.
M. Kornmesser/ESO