"Helmsman, full speed straight ahead."

"Aye aye, sir."

CRASH. Alarms start to wail. After the initial shock and chaos, self control returns to the crew. The tactical office announces "Sir, minor structural damage, shields are holding at 14%, some minor injures to the crew."

"Helmsman, what happened?"

"It appears we hid something, sir."

"What did we hid?"

"According to the ensign who just looked out of a window we hid a planet, sir."

"How in Frick's name can we have collided with a planet?"

"Apparently the show-planet-toggle was in the off position."

Humour besides:

I agree under the condition that objects are not made completely invisible, because i still want to know that there is something there, but are replaced by graphically subdued graphics/icons. E.g. near transparent graphic and/or a generic placeholder icon.