Astronomy questions 4 people interested in answering?

M

Meli

New member
0.Is space time polarized ?

1.Is there a particle that does not have Spin ?

2.Is it true that electromagnetic radiation of higher frequency travel faster than those of lower frequency in a vacuum ?

3.Is it true that a photon has 0 mass and if so,what would it be called if it had 1/2 of mass ?

4.Does space time have any physical properties ?

5.Do cosmic rays produce any shadows ?

6.Is it true that Plasma is the most common form of matter in the visible universe ?

7.Do you think there are animals on Earth that can see Cosmic Rays ?

8.Does the size and temperature of Jupiter have anything to do with the location of the Asteroid Belt ?

9.If bodies cause a curvature in space,why doesn't space try to straighten out ?

10.If space contains energy in the vacuum,and this vacuum creates matter,does that mean that there is some resistance in space for the Earth as it orbits the Sun ?


By answering this questions you help me a lot,even if some of them are weird.I appreciate you sharing your knowledge with me.Thank you !
 
to your question #7 I hypothesize the answer is YES.

Astronauts have reported strange optical phenomenon in orbit which were later attributed to cosmic rays impacting the retina.

I would imagine many animals on earth, possibly large eyed sea creatures (giant squid) in particular, "seeing' cosmic rays - though not a major or meaningful source of sensory input to them.
 
1. No, or only when at absolute 0 degrees, when all molecular motion stops.

2. No, the speed of light in a near vacuum like space is constant, and the speed of light in all mediums is equal to the wavelength times the frequency.

3. Photons have a very small mass, so small that scientists are still trying to measure it.

4. Yes - gravity. Einstein rings and the precession of Mercury's and Venus' orbits are caused by gravity

5. No, not in the conventional sense

6. That might be true. I'd have to research it, but I suspect it is not true.

7. Not likely, although astronauts did see flashes of light from cosmic rays going through their eyes. The Earth's magnetosphere and ionosphere deflect cosmic rays.

8. The mass and size of temperature is why the asteroid belt is where it is. Jupiter's temperature has nothing to do with where the asteroid belt is.

9. Vacuum does not create matter. That would violate both the conservation of mass and energy laws. There is no resistance to Earth's movement in space, even by the dust that is still left over and still present in solar system.

I didn't answer the first question because I think you should read about polarization of electromagnetic radiation first. I periodically wonder how light can be circularly polarized, I go back and read about it, and the explanation makes perfect sense, until I forget the explanation. (The curse of having a middle aged brain - memory farts.) I would say yes, space time is polarized, but polarized in time only, because, so far, we can move in only one direction in time
 
sorry i can't answer all of your questions but i will try to answer some of them the best i can.

1. There is not a known particle that has a spin of 0 but some have been hypothesized based on the the theory of supersymmetry which basically says that for every type of 'particle' there is a corresponding 'particle' that has a spin that differs by 1/2. So for example since leptons have a spin of 1/2 based on the theory there is what they call a superpartner called sleptons that have a spin of 0.

3. Photons do not have mass and therefore it is impossible for them to have a mass of 1/2. Photons do not have mass because they move at the speed of light even though they have energy and momentum, they are kind of weird

6. Yup plasma is considered the most common form of matter. All the stars are made of it and it is basically everywhere in between. we don't see if on earth because it can only exist in extremely hot temperatures, the earth is too cold lol
 
Ill answer the ones i know
4. space time may have some physical properties. Since time on earth and time away from earth's gravity has differences in tie, the physical aspect may be that things don't change like they do away from gravity. For example: astronauts age SLIIIIGHTly slower in space then on earth.

8. of course, the asteroid belt exists BECASUSE jupiter exists
it's size creates immense giant gravitation pulls that keep the asteriods orbiting

9. it's in a curve because it can't straighten out
 
... ok what time really is, the sun location on the orbital axis... 365.242199 days for earth to make a full rotation around the sun... 24 hours in a day, 60 mins in an hours, 60 secs in one min.... thats all time really is ... but when you dont have the sun... then how will you measure time ?? I guess the time stands still, when there is no gravity
 
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