Asteroid 2023 BU just passed a few thousand kilometres from Earth. Here's why that's exciting
- Written by: Steven Tingay, John Curtin Distinguished Professor (Radio Astronomy), Curtin University
Asteroid 20223 BU's path in red, with green showing the orbit of geosynchronous satellites.NASA/JPL-CaltechThere are hundreds of millions of asteroids in our Solar System, which means new asteroids are discovered quite frequently. It also means close encounters between asteroids and Earth are fairly common.
Some of these close encounters end up...
