The Top Most Dangerous Astronomical Object in the Universe?

[Blockzillahead]

it's depressing looking at the ways the universe could end. so i formulated an idea that the big bang right now is still producing matter, anti-matter, and energy and that our galaxy has moved so far out in the billions of years since the beginning, that new galaxies are forever spawning.

I read somewhere that light from the stars you see at night is several million/billion years old.

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[|Orange|]

Anti-Matter.

From what I've read/know:

Anti-matter + normal matter = kaboom and bad things

Anti-matter are particles with the opposite charges/opposite quarks. Like a normal proton is made of two up quarks and a down quark. But an anti-proton would have one up quark and two down quarks. I think only a handful (not literally) would result in a release of a stuffload of energy.

You can correct me if I am wrong. I never took a proper physics class, I just enjoy reading popular science books.

EDIT: Oops, added opposite charges.

[Niff]

Gamma rays made The Hulk, one of the Earth's mightiest heroes.

Dangerous? Yeah, but it also saved the world numerous times.

But Aces, the Hulk doesn't exist...

OT: Anti-Mater

[Swat 3]

I read somewhere that light from the stars you see at night is several million/billion years old.

This is true.

You know the biggest known star Betelgeuse?

It probably blown up when life started on Earth and it is yet for the light to increase and then end.

[Pandan]

sodeep

/wrists

[Acerblock]

Actually, any atom of iron made in a supergiant (big star) would immediately make it explode in a supernova.

Be careful of your frying pans guise, hurrrr!

pageloss.

[dkamm65]

This is true.

Not quite. The Milky Way is about 100,000 light years across, so the light at the very most would be 100,000 years old, although it's not that old because the Earth isn't at the very edge of the galaxy. The light coming from a star is only as old as the star is distant in light years. If you're including the time it can take for a photon to escape the core of a star (somehow I don't think you are), that age could be inflated by up to a couple million years, depending on the size of the star.

You know the biggest known star Betelgeuse?

No, the largest known star is NML Cygni. It's almost twice the size of Betelgeuse.

[Ceist]

nope googled it.

[Swat 3]

Not quite. The Milky Way is about 100,000 light years across, so the light at the very most would be 100,000 years old, although it's not that old because the Earth isn't at the very edge of the galaxy. The light coming from a star is only as old as the star is distant in light years. If you're including the time it can take for a photon to escape the core of a star (somehow I don't think you are), that age could be inflated by up to a couple million years, depending on the size of the star.

No, the largest known star is NML Cygni. It's almost twice the size of Betelgeuse.

I am not too "google search this stuff to confirm" today.

[1337yeah]

The internet
A black hole.

[RedGajin]

/wrists

the world, no......the universe never will understand....

[SquartleTurtle]

A space carrot

[Swollow]

badspot

[Night Fox]

your mom

[Blockzillahead]

Not quite. The Milky Way is about 100,000 light years across, so the light at the very most would be 100,000 years old, although it's not that old because the Earth isn't at the very edge of the galaxy. The light coming from a star is only as old as the star is distant in light years. If you're including the time it can take for a photon to escape the core of a star (somehow I don't think you are), that age could be inflated by up to a couple million years, depending on the size of the star.

I was saying million/billion years old from other galaxies but realized how stupid that sounds since you can't see the stars with your eyes from other galaxies. It's just several thousand/tens of thousands years old.