Here are the screen captures for the 4th Red Planet (variation). if you made it to this Red Planet it's not strictly the 4th one (actually its the 7th one) but it's the 4th variation on the planet (in this case the addition of invisible landscape)
They show:
The planet upon entry with the invisible landscape. You have 11 seconds to activate the Reactor Link and exit the Red Planet.
There are 8 red bunkers to contend with from the beginning of the screen.
Shoot the Reactor Link and exit the planet safely. Good luck! If you made it this far why are you reading this web site?
Just showing you the planet with the landscape, but the real version has no visible landscape so take a look at the other screen to the right (over there --)
This is what it really looks like with the invisible landscape