What can I do in the Gordon Lair?

Have you read the latest message on the Bulletin Board?

You're supposed to "run the sim."

Does anything in the Lair look like a simulator to you?

How about a simulator of planetary movements?

The solar system model!

Too bad two planets are missing.

You might be able to find a substitute or two somewhere.

If you're thinking of using fruit, why don't you read the notice on the wall next to the solar system model?

Do you have anything sphere-shaped in your possession?

A ball, maybe?

If not, step through the portal twice to time-travel to the 50s.

You will find a BASEBALL in the Curiosity Shoppe.

It's in the skull. Yuk.

You'll also need a second sphere, though.

There was another ideal substitute for the model somewhere.

So ideal that it's actually a planet.

Or a model of one.

There is one in the Curiosity Shoppe, but it looks impossible to separate from its stand.

Do you remember another Earth somewhere? Or some time?

Step twice through the portal to return to the Present.

Visit the Travel Agency.

If you don't have a KEY, return when you find it.

Take the Earth from the desk.

With a planet-shaped baseball and an actual "planet" in your possession, step through the PORTAL twice to go back to the 1600s.

Go up the steps to the Gordon Lair and drag the baseball and the Earth onto the solar system model.

Watch as the model starts working and the new flight plan is automatically calculated.