I've always wondered about black holes. In the area of one, gravity prevents anything -even light- from escaping it.
How does something like this exist? Well, when gigantic stars collapse at the end of their 'life' black holes can form. Because the object is so dense, it sort of bends space and it's gravity attracts things close to it. The closer to a black hole, the more space-time is deformed. Theoretically, if someone could survive going to a black hole, while they get closer and time
In movies, books, and tv shows, wormholes are described as a way to travel to different places instantly in a sort of portal.
Researching the subject, I found out there are different types of theoretical wormholes.
One type is called schwarzschild wormhole. It was discovered by Einstein and Rosen. They connect two universes and can only be travelled in one direction. Later, a paper was published that showed this type would be unstable if connecting parts of the same universe. It wouldn't be
We've all heard that dogs and cats are colorblind (This is partially untrue; they can see blues and yellows. Also, bulls can't see red so they aren't actually angry by it.), but there must be animals that can see more colors than humans. Being able to see color is caused by the cones in our eyes that help us distinguish them. Humans for example have red/green, blue/yellow, and black/white cones. Most humans that are colorblind have issues with their red/green cones.
Animals that pollinate, such
So I was thinking about Superman and how he turned back time by flying so fast around the Earth that it started moving backwards. Though I doubt it would change time, I do wonder what would occur if the Earth did change the direction of it's rotation.
The only way this could really happen is if there was a huge collision which could cause many disasters on it's own, but what if it just 'magically' switched directions?
Someone else has thought of this:
http://www.bbc.co.uk/blogs/23degrees/2
As a kid, I always loved swinging, the higher the better. Eventually I got to wondering, after remembering watching that episode of Recess when I was younger, if I swing high enough, can I go over the bar? Is it even possible? (Episode in question:)
http://www.youtube.com/watch?v=ddnQu2gMfNM
Well, it turns out you can, but not on a normal swing (fast forward to around 2 minutes) :
Since most people don't feel like making their own swing here's what happens on the normal kind:
On a
