School-bus-sized asteroid known as 2024 PT5 and currently 2m miles from Earth will begin journey towards sun

A so-called mini-moon of Earth that has been lingering in the heavens since September will begin a journey towards the sun on Monday as it prepares to disappear until 2055.

The school-bus-sized asteroid known as 2024 PT5 might actually be a huge boulder that broke from the moon after another space rock crashed into it centuries ago, astronomers say.