Originally posted by Phage
reply to post by impaired
I wouldn't give up on it quite yet. Maybe they're recharging their capacitors for another shot.
(or were recharging them...or something like that. Lightspeed delay, and all that)
[edit on 5/15/2009 by Phage]
Originally posted by m0r1arty
If indeed there was a laser signal detected the conditions under which it was would be very hard to replicate.
Even if we consider the laser to be extremely wide (say the size of Gliese 581e) it would have to be precisely aimed at Earth to be detected. Lasers are parallel beams of photons of a particular frequency that travel at the speed of light.
The fact that Earth orbits the sun at 65855 mph, spins at 1,038 mph at the equator and changes it's tilt constantly coupled with Gliese 581e's similar characteristics makes a beam of parallel photons, the width of a planet, being detected somewhere on Earth twice very unlikely. Even if we wait until the same time later this year, Gliese 581e will not be in the same position it was.
To quote a very bright engineer "It's like trying to hit a bullet with a smaller bullet while wearing a blindfold, riding a horse".
I know we can easily work out where we'd need to be at any given moment, it's just the getting there that would be difficult.
Looking forward to hearing what he detected though.
Originally posted by infinite
reply to post by Phage
When I read, a level headed, smart, articulate member - like yourself - give a positive assessment, I am leaning towards possible intelligence behind this.
We could see a pulsed laser signal this bright beamed by a large telescope a few dozen light-years away, and a bigger brother could be used for communicating across a sizable chunk of the galaxy. For example, imagine a device 1,000 times more powerful than the Livermore laser affixed to a 10-meter telescope. If it packed infrared pulses into a billionth of a second, it would flash 25 photons per pulse into another 10-meter telescope 10,000 light-years away. Such a heavy-duty communication device could reach billions of stars! Even this little handful of photons, bunched into a single nanosecond, would stand out as artificial were anyone looking for it. Nature just doesn't do things like that.
Originally posted by Nventual
It's happening very soon. We can learn a lot off these people, as can they off us.