Earth is not remotely as old as the Universe.

Age of the universe is about 13.8 Billion years - https://en.wikipedia.org/wiki/...

The age of the Sun is only about 4.6 billion years - https://en.wikipedia.org/wiki/...

Earth in turn is slightly younger than the Sun, at about 4.54 billion years - https://en.wikipedia.org/wiki/...

I also played them back in the day.

In name only. This new Marathon game doesn't seem to have any relation to the originals (Marathon, Marathon 2 and Marathon Infinity).

To quote the article it's just a mislabeled airplane: "The company is developing electric vertical take-off and landing (eVTOL) craft at subsidiary Wisk Aero. The aircraft will adopt autonomous technology, rare among eVTOL craft."