Identify this 80's kids Si-Fi movie please.

It’s about these two kids. They somehow invent (or find I can’t remember) a program in their computer that makes a energy/force field bubble.

Then they figured out a way that they could get inside the bubble. They made themselves a crappy little spaceship, got it inside they bubble and went for a little joy ride.

It was at that point near by aliens took over the bubble and brought the kids to their spaceship.

I’m going from a vague memory here so it’s possible I got some of the details wrong.

Thanks

Explorers.

Sounds like a misremembered version of The Explorers.

That’s it. As usual the Dope nails it! Thanks guys.

And in case you miss it, the rat’s name is Heinlein.