Simulated view of a black hole in front of the Large Magellanic Cloud.
In the general theory of relativity, black holes are blobs of space where gravity is so intense not even light can escape its pull. To learn more about these strange phenomenons of physics, see Wikipedia articles on black holes, wormholes, the event horizon.
Carl Sagan on Black Holes and the Bending of Light
An artist's conception shows a terraformed Mars in development stage three of four.
To the best of man’s knowledge, Earth is the only planet known to sustain life. What if that could change? The universe is still being mapped out and scanned, and our ability to perceive the presence of distant planets is increasing. Whether by discovering an already habitable planet or by consequence of terraforming one to suit life, Earth may not stand alone forever.
The technology and energy required to start terraforming Mars, Venus, or a moon is a major scientific and engineering challenge. Can a Type 0 civilization muster the tools for the task? Using microorganisms or self-replicating nanobots may provide options. Michio Kaku explains what different levels of civilizations are capable of accomplishing, such as terraformation and weather control:
If the technology and resources were available now, which planetary body would you terraform?
Social Media is a communication tool. All social creatures on the planet use communication to work together, and ultimately, survive and prosper. What can tools like Facebook, Twitter, Digg and Mashable do for our species? How does it affect our ability to prosper, share, survive and know each other?