Frontiers

Frontiers

(alt-text)

Star Trek V is a small part of the space frontier, but it's been a while since that movie came out so I assume we've finished exploring it by now.

What If? is now on YouTube!
Check out the first video for the answer to
“What if we aimed the Hubble Telescope at Earth?”
and follow xkcd’s What If? The Video Series channel to be notified about each new video.