Julia Golden, Fargo and others in “What Goes Around Comes Around”

[to Carter] Nemesis is a neutron star that's been theorized to be in binary orbit with our sun.

It crosses earth's orbit every 65 million years, causing an extinction-level event.

Like a killer asteroid?

That's not even the half of it. The tidal stresses from the star's gravitational pull could cause a sudden reversal of Earth's magnetic poles and unleash earthquakes, tsunamis, total global chaos!

The world could literally be turned upside-down.

All right, um, I'll check with Henry. How much time do we have?

If we're lucky? Maybe 2,000 years.

[disbelieving] Two...thou–hmm. See, that's not so much a problem. So next time, don't bury the lead.