NASA, Earth and asteroid

The discovery of a new asteroid this month has turned out to be Elon Musk's Tesla Roadster launched by SpaceX in 2018.
A massive asteroid discovered last month could crash into Earth and it has now triggered a planetary defence response having moved to the top of impact risk lists ...
The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a non-threat.