My guess is that it was dropped by a low-flying robot craft.

Salvage experts on board the Nautile will also use a specially developed robot craft called Robin.

Why--it looked almost like a manned vehicle, not the robot craft they had taken for granted!

Each robot craft is to bring 4,000 pounds of water, food, clothing, fuel, station equipment and personal items.

No, I am not saying that SP3 could be modified from a robot craft to carry a human crew.

The robot craft has two speeds and the score for filling in an area using only the slower speed is subject to a 2x multiplier.

Chasers appear in higher levels which can collide with the player's robot craft, causing a life to be lost.

The sleek robot craft was rolled off an incline and along the ground.

Tentative plans call for launching a 20,000-pound, two-piece robot craft on an expendable rocket.

Those must be low-mass, high-thrust robot craft, maybe made for this one purpose.