So You’ve Found a Comet With a Weird Orbit …

A recently discovered space rock hurtling through the solar system has some of the characteristics of an interstellar object. Here's how astronomers would know for sure.

So You’ve Found a Comet With a Weird Orbit …
A recently discovered space rock hurtling through the solar system has some of the characteristics of an interstellar object. Here's how astronomers would know for sure.