Astronomy & Space - October 2007

2007-10-23 05:47:44 · 7 answers · asked by andy2210 2

I've checked Wikipedia but it didn't really answer my question... Since it's measured in W m^-1, would I be able to say that the flux from the sun is the amount of energy received from the sun in an area of 1 m^2?

2007-10-23 04:56:52 · 2 answers · asked by Anonymous

what effect would an increase in particle size have on reflectance from a soil across the visible and infrared wavelengths

2007-10-23 04:55:13 · 1 answers · asked by Lou 1

2007-10-23 04:38:42 · 3 answers · asked by Anonymous

2007-10-23 03:00:23 · 28 answers · asked by grace 2

2007-10-23 02:52:35 · 8 answers · asked by Mercury 2010 7

please this is important

2007-10-23 02:52:18 · 9 answers · asked by lightning the god of gods 1

2007-10-23 02:28:40 · 13 answers · asked by Anonymous

There are many theories that try to explain how the universe began. Is there any solid evidence that the universe had a beginning? Is it right to assume that everything had a beginning just as the small things on earth have a beginning?

2007-10-23 02:15:01 · 11 answers · asked by Mr Man 2

There doesn't seem to be a lot out there about this. I know it's in development, but I'm wondering if there is a current timeline (one that wasn't created 5 years ago) that is thought to bear some resemblance to reality.

Will we land by 2015 or 2020? I've seen both dates. I would think 2015 would be doable, but my guess is they will just take their time. It's a shame, because China, Japan and India are all racing up there now. I wish we could have the same fire in the belly as we had in the 1960s. The race is much bigger, and much more important now.

2007-10-23 01:56:14 · 5 answers · asked by Anonymous

2007-10-23 01:49:00 · 13 answers · asked by Anonymous

does the moon have its own gravity?
is there an altitude that i can reach and start feeling the gravity of the moon pulling me toward the moon?
If the moon have its own gravity is it of the same force as the gravity of the earth or is it lesser or greater?

2007-10-23 01:26:59 · 13 answers · asked by Omar 1

what is the surface of the planet like?
what is the atmosphere of the planet like ?

2007-10-23 00:52:24 · 3 answers · asked by mz_cricket48 1

2007-10-23 00:48:11 · 33 answers · asked by loving boy 3

Hi, Im a scorpio and my boyfriend is a Cancer.. is this a good match?

2007-10-22 22:31:07 · 4 answers · asked by Anonymous

2007-10-22 22:07:52 · 12 answers · asked by Anonymous

and are satellites generally brighter and closer to earth than stars? can you tell the difference without mapping the stars? which types of satellite orbit closest and does this ever vary significantly? thanks

2007-10-22 21:01:04 · 5 answers · asked by Anonymous

Are scientists being narrow-minded by considering water as necessary for ET life to exist? Also, how can they be sure that life, if any, can't do without oxygen? I mean, well, water and oxygen are key elements for life on earth, but is there not a tiny teeny possibility that ET creatures are just so different that what we need is not what they do?

2007-10-22 20:26:15 · 11 answers · asked by Anonymous

What is the speed of darkness?

2007-10-22 20:25:22 · 14 answers · asked by Anonymous

2007-10-22 19:41:45 · 2 answers · asked by candy noel 1

There are many theories, models, and controversies about the physics of black holes, the 'internal' structure where the laws of physics break down. I've thought about this subject since I first learned of black holes in middle school, then, some time ago, I read an article on space.com about 'quark' stars. Going by observational evidence of the properties possesed by suspected black holes, I came up with the following structure : Imagine if you will a star, let's say 10 solar masses, that has exploded as a supernova while the remains collapse inward. Since the mass is too great to form a white dwarf or even a neutron star, some other more radical transformation of the remaining matter must take place. Since we theorize that remains up to 3 solar masses form neutron stars due to the fact that neutrons could normally not be compressed any further, then perhaps these remains briefly pass through a stage of being a neutron star until the sheer mass overcomes the incompressibility of the neutrons and causes them to split into their component quarks. By this time, escape velocity exceeds the speed of light, and an 'event horizon' has formed around a seething mass of free quarks. As matter gets drawn into the gravitational well this has created, it too gets compressed into component quarks while still adding mass to the whole. Meanwhile, within this 'quark soup', some of the quarks recombine to form sub-atomic particles and are just as quickly broken down again, however, some of these newly forged particles manage to get trapped in the intense magnetic field lines and are able to escape through the magnetic poles. Such a mechnism of sub-atomic particle breakdown, combined with new particles being generated and shot out of the poles could also obey the Law of the Conservation of Energy, while avoiding the infinite density problem common to traditional models. Unfortunately, I'm not a knowledgeable enough mathmetician to calculate the details, but the outline makes for a worthwile idea.

2007-10-22 18:38:09 · 5 answers · asked by Anonymous

Astronauts do and Astronomers watch so do Astronomers take offence to being called voyeur's?

2007-10-22 18:38:06 · 8 answers · asked by Anonymous

So is it true that if the Earth got lost in a big black hole, time would turn back? If so how far, and how fast?

2007-10-22 18:26:19 · 6 answers · asked by Anonymous

I was wondering where I could get a high-tech telescope where I can see starss close up and planets close up. do you know of any places?

2007-10-22 17:32:18 · 8 answers · asked by Howdy 1

2007-10-22 17:04:25 · 11 answers · asked by gandhi 2

2007-10-22 16:59:53 · 8 answers · asked by Anonymous

2007-10-22 16:56:58 · 13 answers · asked by Mercury 2010 7

2007-10-22 16:48:50 · 7 answers · asked by sebastian n 3

I realize that at present moment, this type of operation may not be speculated as being feasible. There is a great deal of hypothesizing going on that is concerned with the complete recreation of Mars' environment (Terraforming) into an earth-like environmeny, which seems possible. However, the gravity which is currently present on Mars is about 1/3 of the gravity which exists on earth. People who would one day migrate to this terraforming Mars would find themselves in an environment similar to ours, but the gravity would be radically different and they may experience bone/muscle loss. So... any ideas on how to bolster or otherwise modify a planet's gravity field, to make it stronger until it is level with Earth's?

2007-10-22 16:02:08 · 15 answers · asked by ssu.trublu 1

2007-10-22 15:56:41 · 2 answers · asked by Anonymous