Monday, May 31, 2010
The comets and asteroids that are potentially the most hazardous because they can closely approach the Earth are also the objects that could be most easily exploited for their raw materials. It is not presently cost effective to mine these minerals and then bring them back to Earth. However, these raw materials could be used in developing the space structures and in generating the rocket fuel that will be required to explore and colonize our solar system in the twenty-first century. It has been estimated that the mineral wealth resident in the belt of asteroids between the orbits of Mars and Jupiter would be equivalent to about 100 billion dollars for every person on Earth today. Whereas asteroids are rich in the mineral raw materials required to build structures in space, the comets are rich resources for the water and carbon-based molecules necessary to sustain life. In addition, an abundant supply of cometary water ice could provide copious quantities of liquid hydrogen and oxygen, the two primary ingredients in rocket fuel. It seems likely that in the next century when we begin to colonize the inner solar system, the metals and minerals found on asteroids will provide the raw materials for space structures and comets will become the watering holes and gas stations for interplanetary spacecraft.
Reference: Lewis, John S. Mining the Sky: Untold Riches from the Asteroid, Comets, and Planets. Addison-Wesley, 1996.
Friday, May 28, 2010
Wednesday, May 26, 2010
Tuesday, May 25, 2010
Friday, May 21, 2010
An important PSA you need to watch from voice actor Lance “D.C. Douglas” Baxter (go to http://voices.washingtonpost.c
Tuesday, May 18, 2010
Monday, May 17, 2010
Sunday, May 16, 2010
Friday, May 14, 2010
Thursday, May 13, 2010
Wednesday, May 12, 2010
Tuesday, May 11, 2010
Sunday, May 9, 2010
Friday, May 7, 2010
Thursday, May 6, 2010
Wednesday, May 5, 2010
Wow, you don't say..! Who could ever have guessed this?
Brain shuts off in response to healer's prayer - life - 27 April 2010 - New Scientist
Tuesday, May 4, 2010
Monday, May 3, 2010
A Jedi lightsaber is plasma contained in a magnetic field. Plasma is basically the form of matter which stars are made of. Pre-Crisis Superman has flown through the heart of a star without being harmed. Therefore, he is immune to plasma.
Post-Crisis Superman was not as invulnerable, e.g. a nuclear explosion would weaken him. Assuming a lightsaber contains power similar to a nuclear explosion, it could similarly disrupt his invulnerability during impact. See FORCE OF IMPACT below.
Superman receives his power from the radiation of our yellow sun, and is weakened when exposed to radiation from a red sun. It is possible that a sith lightsaber, being red, might have similar properties.
Even so, Superboy Prime was defeated after being plunged through Krypton's red sun - which weakened him, but did not destroy him. Therefore, a red lightsaber which hypothetically had the same properties as a red star should have a similar effect, i.e. it would injure him, but not "cut" him, much less cut through him.
FORCE OF IMPACT
If Superman were rendered vulnerable by a lightsaber, it would likely create a momentary weakness in that spot, allowing the physical impact to cause damage. However, lightsaber blades, being made of plasma, presumably have a very small mass. Therefore, the force of the impact would be negligible.
In short, hitting Superman with a red lightsaber is like hitting a normal human with a wet noodle.