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Posted on: Who wants to do FTL now?
at 11/25/2009 4:26pm

What I mean is that if Dark Energy accelerates the expansion of space, could we use it to accelerate space expansion in ... more(+)

What I mean is that if Dark Energy accelerates the expansion of space, could we use it to accelerate space expansion in a area localized around a ship? The second part of the problem is that we need some way to contract space, so that we can have an expanding and contracting bubble that worms its way through exterior space at >c. The craft within, of course, obeys relativity and is below the local speed of light. close(-)

Posted on: Allen Hills Meteorite ALH 84001 IS BACK IN THE NEW...
at 11/25/2009 4:07pm

What about being formed by bacteria on Earth? Is the "contamination" debate over? more(+)

formed by biologic activity on Mars and not some non-biologic thermal event.

What about being formed by bacteria on Earth? Is the "contamination" debate over? close(-)

Posted on: Traveling at Speed of Light?
at 11/25/2009 4:00pm

It's best to think of time as processes happening in relation to each other. Processes like the movement of atoms (and ... more(+)

It's best to think of time as processes happening in relation to each other. Processes like the movement of atoms (and even further down) in your bodies will occur at a particular rate when your mass is undergoing a particular acceleration. Compared to other accelerations it will occur differently. If every process were to slow down within a ship moving near the speed of light, things at rest on earth, will be racing along in comparison. close(-)

Posted on: Traveling at Speed of Light?
at 11/24/2009 7:52pm

That's the worst part about relativity. If I understand this correctly, if you were traveling at many .9 decimal places ... more(+)

Jerromy wrote:Excellent link, Speedfreek. Crazily complex to factor in the resistance one would encounter travelling near c...

That's the worst part about relativity. If I understand this correctly, if you were traveling at many .9 decimal places ahead of 99%c, and the outside time is faster in relation to you. Then as you take a year to cross the galaxy, besides from photons and cosmic rays, you will hit atoms every now and then. If you hit 1000 Hydrogen atoms per year (in reality it would be a lot more I'd think), but as your year passes, thousands do for the frames of the atoms, then don't you actually up the rate at which you are getting hit, even more than just caused by the speed increase itself? You are being hit by millions of atoms instead of 1000s. Never mind all those horrible subatomic particles.

Besides the energy needed to power it, the craft would need to be made out of some impossible material which passes through everything like a ghost, but that's a story for the unexplained.

Seems like we'll be stuck to taking 10s of thousands of years to colonize the local stars. close(-)

Posted on: Who wants to do FTL now?
at 11/24/2009 7:40pm

If Dark Energy can expand space faster than light travels, if we could produce it, couldn't we use it for FTL travel?

Commented on: Attempt to Free Mars Rover Snagged by Wheel Stall
at 2009-11-24 19:16:31

It's OK everyone... THIS IS A JOB FOR SUPERMAN!

*flies to Mars and lifts Spirit out*

Commented on: Huge Explosion Was Biggest Space Rock to Strike Earth Since 1994
at 2009-10-29 19:48:39

My mum saw a fireball in the sky last night, but it surely can't have been this object, because it would have had to ... more(+)

 close(-)

Commented on: Dirty Stars Make Great Hosts for New Worlds
at 2009-10-07 20:48:15

Are there even stars without planets?

Commented on: Big Asteroid Less Likely to Hit Earth
at 2009-10-07 16:52:55

Awwwww!