Astronomy & Space - July 2006

2006-07-24 14:21:36 · 17 answers · asked by Ivy 3

2006-07-24 14:11:04 · 11 answers · asked by Brenda S 1

Will it be impossible to populate other solar systems if the speed of light can't be broken?

2006-07-24 13:42:39 · 29 answers · asked by jxt299 7

NASA has made an alarming twist in its Planet-protecting Phrase from "to understand and protect our home planet" to "to pioneer the future in space exploration, scientific discovery and aeronautics research". Opinion, please?

2006-07-24 13:38:55 · 7 answers · asked by Anonymous

I want portability, but also want to do astrophotography and object tracking.

2006-07-24 13:38:27 · 3 answers · asked by cassicad75 3

CAN YOU PLEASE TELL ME ABOUT YOUR EXPERIENCES WITH ZOMETOOL, and if you dont know what I am tlaking about, then just enjoy the two points

(it is like knex or lego or linkin logs, with speciaties sometimes in aliens and space)

2006-07-24 13:03:40 · 5 answers · asked by Anonymous

If you believe there are life on other planets,do you think there are humanoid or another type of life form?

2006-07-24 12:58:58 · 17 answers · asked by Anonymous

every star blows up at some point in time when do you think our sun will? wat do u think the results will be? how long do you think people on earth will last? and when the sun turns into a "red giant" do u think our sunlight will be red? do you think all the planets will collide due to the loss of the suns gravitational pull??

2006-07-24 12:53:38 · 16 answers · asked by Anonymous

thought I'd ask this now since all the astrophysicists seem to be awake.

When a photon is thought of as a particle, it has mass as far as I recall. But when you think of it as a wave, it goes at light speed (at least in a vacuum). And both must be true at the same time. Right? (??) So surely at light speed, its mass would become infinite?

2006-07-24 12:02:47 · 14 answers · asked by wild_eep 6

not in space floting around,but in their space suite. how do they scrach it

2006-07-24 11:53:25 · 4 answers · asked by Anonymous

http://uk.answers.yahoo.com/question/index;_ylt=Ap8xc181bwvwoBVvSKGfOkAgBgx.?qid=20060724152900AA6uNeI

What if, when we get there, it's boring? I mean, there are buzillions of starts, and we have to blow our entire planet's energy budget for a generation just getting to the nearest one. What if there are no little green men to talk to? After all, we haven't even picked up their TV channels yet.

So what do we think we'll find when we get there? Anything worth the trip? Are there, at least, any planets?

2006-07-24 11:46:15 · 12 answers · asked by wild_eep 6

http://uk.answers.yahoo.com/question/?qid=20060722144831AAlNdua&r=w&pa=BIFqNXbjPnbSRhDhh2.WnFD3mSIDOCvaMD9YAbriARXWrlirKpI10w-- for why it won't work. But that aside, how about this?

We're off to Alpha Proxima, 4.5 light years away I think. Let's say ten or so years is a reasonable time to get there, so half of light speed is OK. No need for multiple generations or suspended animation, though a good DVD library would help.

(1) Mass - We can't hit infinite mass or we become a black hole. How massy are we? Let's say we started at 100 tonnes. As far as I recall it's 1/(1-u^2/c^2), so our new mass is 133 tonnes. Fine!

(2) Acceleration. We can tolerate 1g, in fact that's extremely comfortable. So we accelerate at 10m/s^2. That takes us a bit less than six months to get to speed. Also fine!

(3) Energy. We need E=1/2 * mass * u^2, which comes to 415,625,000 TWh of energy, which is 30 times the world's annual electricity production.

Ah.

OK, can you fix this?

2006-07-24 11:29:00 · 22 answers · asked by wild_eep 6

2006-07-24 11:27:44 · 8 answers · asked by Anonymous

2006-07-24 10:42:22 · 6 answers · asked by molly 1

2006-07-24 10:17:09 · 50 answers · asked by Col 2

2006-07-24 10:15:26 · 2 answers · asked by joe_toulon 1

What co-operation is being achieved to allow close monitoring of the immediate area around the earth?

2006-07-24 09:56:22 · 8 answers · asked by Riz 1

For instance, to date we have no means beyond increasing velocity of getting anywhere in reasonable time. The nearest stars are 10000 times as far away as the farthest planet in the Solar System, and it takes our craft years just to go from planet to planet. For those, who have not thought on these lines and think we can just find ways of increasing velocity, just think what happens to the shuttle when it re-enters what is very thin atmosphere - it burns up, and if the heat shields are slightly out of whack, people die.

That's the reality. At speeds just a fraction of light (many times faster than a shuttle re-entry), no craft could withstand entering the most sparsely spread dust or gas field.

What's the solution?

2006-07-24 09:52:11 · 3 answers · asked by nick s 6

2006-07-24 08:13:27 · 14 answers · asked by Anonymous

Basically I want to know, in a zero weight environment, do heavier objects (based on their earth weight) require more energy to move, tow, push, etc, than lighter objects (baseball versus firetruck)?

If you have sources for your answer please post.

2006-07-24 07:54:57 · 10 answers · asked by Manny 1

we can tell what a substance is made from by the spectrum of light it produces, so why, if the speed of light is constant, does the light move into the red, or green spectrum if the galaxy is moving away, or toward us?

2006-07-24 07:36:13 · 9 answers · asked by caprilover79 3

If the sun shines brighter, why is it colder? Sorry if you think this is stupid,but nobody has ever told me.

2006-07-24 07:27:55 · 15 answers · asked by Anonymous

. . . and if it eventually collapses back on itself, will that lead to a new big bang? and will that new universe have the same laws of physics or different?

2006-07-24 06:41:14 · 6 answers · asked by Kenny ♣ 5

2006-07-24 06:27:05 · 5 answers · asked by Drew H 1

How can we survive the radiation then?

2006-07-24 06:21:06 · 4 answers · asked by lamialestat 3

2006-07-24 06:15:43 · 7 answers · asked by Cozmo the Bear 3

i have spent all day trying to find good reasons and need answers for a report. Can anyone help.

2006-07-24 06:03:31 · 25 answers · asked by Laura F 2

2006-07-24 05:43:49 · 22 answers · asked by bigcordy 1

Even if they are staking my house out?

2006-07-24 05:33:36 · 8 answers · asked by kathy6500 3

2006-07-24 04:49:54 · 18 answers · asked by Anonymous