Isn't space so scary and fascinating?

Wormhole

I wanted to ask about worm holes in particular first

. I saw one particular view of a worm hole where it looked kinda like a 3-D D with an in-side and an out-side on the top and bottom of the D.. Oh forget it.

there, that. I don't understand the picture? What's with the curve D part? in other pictures there is just an in/out like this one:

Also is there any evidence or possible evidence that a wormhole has ever existed? What is the theory on wormholes?

I was just reading my science book and got pretty fascinated about space stuff when imagining Mars and there actually possibly being something on there- like our planet earth. Usually I just imagine some unknown planet with stuff on it but this time I treated it like planet earth- like being on earth except it's a different planet and looks different and it just has this sort of feel to it.. the idea... and then other planets and the stars and stuff and black holes starting feeling that way too.. kind of scary but really big feel to it.. I don't know if you will get what I am trying to say :/

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Black Hole

Where is our black hole? I didn't know that we actually spotted black holes. I hear that we have a black hole in the middle of the Milky Way or  something and that they are usually in the middle of galaxies. I wonder why that is? Could astronauts get anywhere near it (I don't know how close we are to the middle), and could they tell where it is so to avoid not getting sucked in? I used to think that a black hole would just keep swallowing and swallowing so that there wouldn't be one anywhere near here or maybe not even in existence (I guess I assumed it was a theory) but now I've read that you have to be a certain distance from the black hole to get sucked in. Silly me. I also saw that a star was observed as being "eaten alive" and that people think it got too close to a black hole.
http://blogs.discovermagazine.com/badast...ting-away/

In some places there are crap loads of black holes, or so I read.

Black holes are really scary to me but interesting. Our black hole better keep its size down. How are black holes even formed? That's what I'm wondering. And how does the "end" of a black hole go? What does the back of one look like from the outside? What would happen if a black hole swallowed everything up? Black holes are creepy. Is there a way to "kill" a black hole?

White hole
Is a white hole just an idea or do white holes really exist? They are the opposite of a black hole- nothing can enter it but things can escape it. What kind of stuff would be escaping a white hole anyway?

Vacuum
What happens when you breathe in outer space? Does the matter you breathed out stay there? "Historically, there has been much dispute over whether such a thing as a vacuum can exist. Ancient Greek philosophers did not like to admit the existence of a vacuum, asking themselves "how can 'nothing' be something?". Plato found the idea of a vacuum inconceivable. He believed that all physical things were instantiations of an abstract Platonic ideal, and he could not conceive of an "ideal" form of a vacuum. Similarly, Aristotle considered the creation of a vacuum impossible — nothing could not be something." I guess no part in our outer space is a perfect vacuum.

Other solar systems
I wonder if there are planets that have life in those other solar systems... if there's one just like Earth, with organisms and things on it. I wonder if there are humans there. Do you think they're wondering about us?

Gas giant planets are creeping me out too. Think of Jupiter, just sitting there, with its hot gassy self. If someone threw me into THAT... and its freak storms... holy crap.

Okay, I found out one way black holes are formed. Stars are now creepy as well.

Okay I have found out that black holes have the same gravity as the star it was and that they can't grow. PHEW. But is everything close enough to a huge star that could become a black hole, to be sucked into it if it was a black hole...

This post was last modified: 05-14-2012 08:18 AM by mels8780.

I don't think possible wormholes have been observed at anything more than a quantum level. In other words, even if they do exist you'd have to be a subatomic particle to go through one. Of course some like to think that we could "stretch" one big enough for a spaceship to fit through. But that is a really big stretch, both literally and figuratively.

You can't see a black hole, because it is super black. You can see observe its effects.

A vacuum is not "nothing". Think of empty space as a fabric. Things like gravity actually bend space. It isn't matter or energy, but that doesn't mean it is nothing.

Other planets with people like us? Seems likely, considering how many stars there are out there. Between 10^22 and 10^24 most likely in the known universe. Is it like Star Trek, where every planet, just about, has people who are just like us apart from some pointy ears or funny bumps on their foreheads, and they all speak English.

Interesting stuff. I have no education in this stuff beyond science magazines and documentaries, so take anything I say with a huge grain of salt.

My question for you: are space and time finite or infinite?

Recently they postulate that black hole are in fact what form Star system. The hole attract a lot of matter and energy. Then it reach a critical mass and explode. That explosion form giant gaz formation, knowed as nebula. Inside after a little while, star start to get formed. Check out Hubble nebula, some are super nice.
This is the Cat eye nebula.

This post was last modified: 05-14-2012 12:41 PM by Vampslord.

Me as well. They don't have crusts in the same convention as the 'rocky dwarfs'. Instead they have oceans of LIQUID METAL, thousands of miles deep and many thousands of degrees hot.

Jupiter is awesome. You'd visit or colonise the moons, obviously, not the actual planet. There are 66 moons, so I'm sure you could find one you'd like.

Fascinating how Galileo observed, through his telescope, moons circling Jupiter in 1610  Which went a long way towards disproving the idea that everything circles the Earth.

I heard years ago that Jupiter was gas all the way down. Then it was decided that it probably has a rocky core. Oceans of liquid metal sounds even more fascinating, not that anybody will ever get to see them.