Astronomers have painstakingly built models of the asteroid population, and those models predict that there will be ~1 km-sized asteroids that orbit closer to the sun than Venus does. The problem is, nobody’s been able to find one—until now.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/20-astronomersd.jpg)
Source:
https://phys.org/news/2020-09-astronomers-km-asteroid-orbiting-closer.html