How big is the Earth?!

[Rixion]

Ikr, I found this picture of it compared to our sun. http://upload.wikimedia.org/wikipedi...is-majoris.jpg

It seems uncanny when you think of our big the Earth alone is then there's these gigantic stars that are thousands the size of Earth.

[Phil]

It seems uncanny when you think of our big the Earth alone is then there's these gigantic stars that are thousands the size of Earth.

And that's just inside the Milky Way! Imagine the size of some of the planets or start in another one of the billions of universe! Yes, that is the biggest star that we know of and yes it was discovered about two hundred years ago but that doesn't mean there are far bigger out there. Space is kinda big.

[Rixion]

And that's just inside the Milky Way! Imagine the size of some of the planets or start in another one of the billions of universe! Yes, that is the biggest star that we know of and yes it was discovered about two hundred years ago but that doesn't mean there are far bigger out there. Space is kinda big.

Yeah, the milky way apparently isn't that a large galaxy, god knows what the size of a large galaxy is.

[Phil]

Is that a picture of all the galaxy's at the very end? It's quite hard to know as we don't know how many there are but there are some pretty big ones there.

[N!ck]

Is that a picture of all the galaxy's at the very end? It's quite hard to know as we don't know how many there are but there are some pretty big ones there.

That picture at the very end is quite a famous one in astronomy (I'm meaning the one where it says there are billions of galaxies and zooms out from it). Basically, they took the Hubble space telescope and pointed it at a tiny portion in a dark part of the sky (I'm talking dark even in terms of what that very sensitive telescope picks up). They left the lens open for a long period of time so that it collected a lot of light and that image was the result. Everything in that image is a galaxy, containing billions of stars each .

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You can read more about it here http://en.wikipedia.org/wiki/Hubble_Ultra_Deep_Field

[HotelUser]

That's another video that really put things into perspective for me.

[kk.]

Our sun is 1 of 100 Billion (100,000,000,000) stars in just the milky way. Can you see how many galaxies are in that picture above, and now multiply 100,000,000,000 by that. Then the many other galaxies there are. then the amount of planets around each star. Phenomenal.

[Moh]

Isn't the name "Milky Way" the name of the Galaxy earth is?

Do you think space ever ends?

[Jordan]

Isn't the name "Milky Way" the name of the Galaxy earth is?

Do you think space ever ends?

Yeah it is,

and that's a good question, maybe it just gets slowly empty maybe just black nothing there like a desert

[kk.]

Isn't the name "Milky Way" the name of the Galaxy earth is?

Do you think space ever ends?

I think there's two theories. one that the universe is constantly expanding from the centre. and two that we are actually going into the centre. Something like that anyway because its sort of impossible to think that there is an edge to the universe, but there is. there has to be. Or at least you just keep going around in a circle, in which case it originated in a big bang and its expanding