A nearby asteroid called Bennu, which poses no threat to Earth.
NASA/Goddard/University of Arizona/CSA/York/MDA via AP
- NASA conducted a new tabletop simulation of discovering a large asteroid headed for Earth.
- Experts feared Congress wouldn't fund a mission to an asteroid with a 72% chance of impacting Earth.
- This hypothetical scenario highlights a challenge in addressing any future impact threat: politics.
NASA recently brought together about 100 experts...