Gravity Wells

Another awesome xkcd comic (click to enlarge)…

The Physics of Space Battles

From the article:

“Enemies could come at your ship from any direction in space, which means that you would want to react, strike, and counterattack in any direction. So, you would either have to mount weaponry all around your starfighter, put the weapons on gimbals so that they could rapidly point in any direction, or make the fighter maneuverable enough that it could rapidly point in any direction. Gimbals would be a bad option, because they would introduce points of increased vulnerability, unless they could be very well-armored. I conclude that the big ships would have many weapons, pointed in many directions; the small ships would have a few weapons, with the main weapon systems pointed in one direction.”

Mysterious light above Norway



Amazing new images from Hubble

Farms in Kansas from space

Never-before-seen photo shows Neil Armstrong’s face as he first walks across the moon

The Space Shuttle Enterprise…