Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever encountered.

For context, that's 90 million kilometres farther than the distance between the Earth and the Sun! This diagram shows the hyperbolic trajectory of interstellar comet 3I/ATLAS as it passes through the inner solar system.

It’s a fantastic opportunity to test our model on something new and possibly ancient.” The scientist explained that the comet is only the third known visitor from beyond our solar system to be spotted in our cosmic neighborhood,