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  1. ...'re usually painted yellowish in diagrams (guess why). http://en. wikipedia .org/wiki/Stellar_classification http://en. wikipedia .org/wiki/Main_sequence...

    7 Answers · Science & Mathematics · 16/12/2011

  2. They're not very efficient in their use of electrical energy. To send a craft anywhere meaningful would require too many batteries or a reactor with a lot of fuel. Either way the mass being moved is primarily the engine and not passengers or cargo.

    3 Answers · Science & Mathematics · 11/08/2006

  3. Nuclear explosions detonated behind the ship-- http://en. wikipedia .org/wiki/Project_Orion_(nuclear_propulsion) According to the...

    5 Answers · Science & Mathematics · 26/11/2008

  4. ...". It's a nice series, and relatively "hard" sci - fi , too. :) Various ways have been proposed to deal with space debris: http://en. wikipedia .org/wiki/Space_debris#Dealing_with_debris The problem is...

    1 Answers · Science & Mathematics · 25/03/2010

  5. In the realm where anything is possible, yes, it is possible. But it is highly improbable. It would have been possible for the Russians to have launched a moon rocket without anyone outside knowing. Their launch complex was remote...

    6 Answers · Science & Mathematics · 29/02/2012

  6. ...model for that body. For example Titan. http://en. wikipedia .org/wiki/Titan_(moon) <QUOTE...'s up to about 10 times as much. http://en. wikipedia .org/wiki/Triple_point#Table_of_triple_...

    6 Answers · Science & Mathematics · 24/07/2011

  7. ... about 39,000,000,000,000 cubic light years, according to Wikipedia (which may or may not be accurate), though of course defining a precise edge ...

    2 Answers · Science & Mathematics · 03/11/2009

  8. Hard SF is cool but it's appeal is limited to the masses. It has zero appeal to a producer. They do not care what orbits what or why. They care about money and box office returns because it pays for the...

    2 Answers · Science & Mathematics · 08/05/2012

  9. ... to adjust its trajectory so it will intersect the moon: http://en. wikipedia .org/wiki/Trans_Lunar_Injection According to this...

    9 Answers · Science & Mathematics · 29/03/2008

  10. ...examine it first hand. Beware the andromeda strain syndrome though: http://en. wikipedia .org/wiki/Fobos_grunt http://en. wikipedia .org/wiki/Andromeda_strain...

    7 Answers · Science & Mathematics · 07/12/2011

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