Astronomers Discover Near-Perfect Supernova Remnant: Telios

Scientists found a weird, almost perfectly round leftover from a star explosion, called Telios.

It's super round, which is unusual because these things are usually messy.

It's also very dim, making it hard to know how far away it is, but it's likely thousands of light-years away.

Because of its shape, Telios could be a young remnant, or it could be an old one that has not changed much.

It is made of gas that blew up after a star died, perhaps a Type Ia supernova.

This discovery challenges what scientists thought they knew about how stars explode.