Anyone here know much about Space?

[Wezzy]

If anyone know anything about Space or anything in Space thats not really very obvious, please post it here Cause i wanna know about it; it looks cool.

 

[Tiny Bronco]

1. A Saturn moon has liqiud water on it. Shame its full of acids/methane
2. Mars has Ice caps.
3. Alpha Centauri is the closet star to our own. 4.5 light years away.
4. The Hubble Space Telescope can look back in time in a sense.
5. Negative Energy is a particle that has negative mass. (Repelled by gravity)
6. Dark Energy does basically the same thing. Its beleived to be accelerating the expansion of the unniverse. If humans could create/controll this stuff we could theroetically go faster than light. Might blow up Earth in the process, but O well.
7. The sun creates its energy by converting hydrogen to helium (fusion) or something like that.
8. The unniverse is very very cool looking
9. A Super Nova is when a star collapses on itself because it has run out of feul and then Exploooooodes
10. A Super Nova can temperarally Out Shine everything in the Milky Way. Which is saying something since the Milky Way has an estimated 100 billion + solar systems. Pobably a lot more.

NOTE: Some of these are the excepted theorys of science. Not fact.

I'm very interested in space too.

 

[ShadowHeart]

9. A Super Nova is when a star collapses on itself because it has run out of feul and then Exploooooodes

Only the biggest stars end their lives in a Super Nova. A small or medium sized star (such as our sun) will not end in a Super Nova. These will, when they dont' have enough hydrogen to sustain the hydrogen fusion anymore, start to fusion helium into yet heavier elements, causing the star to grow immensly and turn red, a so-called red giant. This process will continue, fusioning heavier and heavier elements, but eventually when there is no more fuel, the outer layers will be ejected into space as a planetary nebulae (an expanding ring, or rather sphere, of gas), and the core is all that remains basically. The remains is called a white dwarf, and will slowly cool off over a course of billions of years

 

[Wezzy]

I thought the remains of a SuperNova was a Black Hole, a vacuum inside a vacuum, sucking everything in including light, and light is time so a Black Hole destroys time. The omst dangerous thing in the universe...

 

[ShadowHeart]

The remains will be a black hole, yes. Did I say it wasn't? I don't remember doing that.

 

[Tiny Bronco]

They could become a black hole, but most cores left from a Super Nova will either become a white dwarf, a black dwarf, or a pulsar star. Not sure if I spelled that right. Anyone know about String/M Theory? I find that one very interesting.

 

[.infinite]

4. The Hubble Space Telescope can look back in time in a sense.

I'm skeptical about what you mean on this one. The telescope focuses light differently than the human eye, but it cannot somehow "see" light that has not yet reached the lens.

And as for string theory, its is incredibly complicated, but the most basic gist is that our multidimensional space is comprised of 1 dimensional strings of energy instead of the classically accepted 0 dimensional point.
There are some other basic tenants accepted by string theorists, such as the set length of the strings (Plank Length, also complicated) and that they vibrate at resonant frequencies.
Theres a lot more to it, but there are also quite a few variations and disagreements.

 

[Tiny Bronco]

4. The Hubble Space Telescope can look back in time in a sense.

I'm skeptical about what you mean on this one. The telescope focuses light differently than the human eye, but it cannot somehow "see" light that has not yet reached the lens.

And as for string theory, its is incredibly complicated, but the most basic gist is that our multidimensional space is comprised of 1 dimensional strings of energy instead of the classically accepted 0 dimensional point.
There are some other basic tenants accepted by string theorists, such as the set length of the strings (Plank Length, also complicated) and that they vibrate at resonant frequencies.
Theres a lot more to it, but there are also quite a few variations and disagreements.

I'll explain about Hubble.

The Hubble Deep Feild is an area so incredibly far away that light from its many millions of stars hardly reaches Earth. To us and all of our telescopes this area looked completely black and void of anything. A team (can't remeber there names) wondered why and decided to point the Hubble at that area to see if it could pick up any light. (Hubble is currently our best telescope) After about a month of looking at this area for 12ish hrs. a day the Hubble had detected enoof light to put together a picture. There was really millions of millions of solar systems in the area. This led NASA to thinking how far away thes solar systems were. It turns out that for light to be that dim when it came from such a bright source it would have to travel for several hundreds of millions of years before it reached Earth. So what Hubble saw was what those stars looked like hundreds of millions of years ago. This is how Hubble can see back in time. We have no clue what the Hubble Deep Feild looks like now because light from it has reached Earth yet.

To continue my list of random stuufs about space..
11. There is nearly 9 times more x-ray light in the universe than visible light.
12. Most gamma rays are made when a star collapses.
13. The Hubble Space Telescope will go out of order aroun mid 2007 because NASA can't replace its batterys do to cost.
14. Our sun won't run out of energy for another 400,000,000 million years. Or maybe its four billion. I can't remember.

 

[Lyde Lyde]

I know that recently a new planet was discovered, so far for now they're calling it Planet X because they're not entirely sure if it's a planet or a moon to another planet that they haven't discovered yet.

 

[Tiny Bronco]

It's an asteroid very very looselt orbiting the sun. Though it might still become a planet because Pluto is also an asteroid orbiting the sun. There really is no exact definition of a planet. I think that "Planet" X is part of the Ooin Cloud.

 

[SethirothVII]

there are 3 diffrent types of supernova and they are sun MIGHT have the samllest supernova what are all total destruction and the biggest supernova can be seen anywhere in the gaxalies and milky ways. There has been 2-3 supernova seen from earth by naked eye and only sometimes when a supernova happens it leaves a black hole and a masive amount of matter wot turns into another sun.

Also there are 3 outcomes to the end of the universe
1. It carries on expanding and getting bigger proven by the red shift (droppler effect)
2. The universe stops expanding and stays same size
3. Last one if the BIG CRUNCH the universe stops expanding and starts getting smaller everything shall be crunch and destroyed Steven Hawkins beleives if this happens our lifes and the universe rewinds then the big bang happens again.

Also another planet past pluto has been discovered
They have discovered a solar syestem exactly like ours
Also they have seen a comet that is bigger than the one that killed off the dinsosaurs and it might hit Earth they are not sure also the haleys comet wot passes earth every 75 years when a leader comes to power then he is the most likely person to be the antichrist.

Wanna know the diffren types of supernova follow the link http://en.wikipedia.org/wiki/Supernova

 

[SethirothVII]

Only bigger bang than a supernova is the big bang what was two huge amsses of matter collide cuaes a massive nuclear fusion reaction causeing a massive energy and blast

 

[Seyluv]

I know that there is no gravity, no air, there are, the is a planet called planet 'x'.

 

[darkshadow2247]

i have a theory about space posted somewhere. i cant remember it verbatum but if i ever find where i posted it, i'll bring it here

 

[richboywonder]

well,uh there's planets and you can't breathe in space.i'm not good in science.how do planets float.

 

[dappa]

I read in an astronomy book that In 2-3 billion years the sun will run out of hydrogen and then start burning all its helium reserves causing it to become a red giant star. The book said that it would expand as far as the earth either devouring it or scorching really badly like mercury.

I also read that by calculating the speed of light and using it to work out how far light has travelled you could see back into the past, light which supposedly appeared 3 secs after the big bang but there is no earlier evidence of any light before this 3 seconds.

 

[John Smith]

The light provinient from the sun takes 8 minutes to reach the planet Earth.
The meteorite belt between Earth and Mars (Or is it Mars and Jupiter?) are beleived to be the remaints of the explosion of a planet that once existed in that orbit.

I love Space too

 

[Kat]

=o
i loveses astronomy <3
and i pretty much was going to say what Dappa said,in ~5 billion years the sun will become a giant,and the earth is about the size of a White Dwarf,and White Dwarfs are stars that are really bright but not really hot,just incase you were wodering what it was :Rolleyes:
i don't know alot about it,but i like learning about it.

 

[dappa]

I also read that two galaxies on either side of our galxy (cant remember their names) which are travelling at very fast speeds will eventually crash into our galaxy in milions of years time causing lets say plenty of reactions.

 

[dappa]

There is a theory that jupiter is a failed star. One astronomy magazine which I read said that if the chemical reactions of jupiter were stronger than what they are now. Jupiter would have enough power to turn itself into a star. Just aswell it cant though.