Cloud Chambers: Visualizing Radiation 

Ask Ethan: Does Dark Energy Mean We’re Losing Information About The Universe?

“The universe’s expansion means our visible horizon is retreating; things faraway are vanishing continuously. (Albeit slowly, right now.) This would seem to imply we are losing information about the universe. So why is it the idea of losing information in a black hole’s event horizon is so controversial, if we’re constantly losing information to another horizon?”

As you look to greater and greater distances, you’re looking back in time in the Universe. But thanks to dark energy, what we can see and access today isn’t always going to be accessible. As galaxies grow more distant with the accelerated expansion of the Universe, they eventually recede faster than the speed of light. At present, 97% of the galaxies in the Universe aren’t reachable by us, even at the speed of light. But that isn’t the same as losing information. As a galaxy crosses over the horizon, its information never disappears from the Universe connected to us entirely. Instead, it gets imprinted on the cosmic horizon, the same way that information falling into a black hole gets imprinted on its event horizon. But there’s a fundamental difference between a black hole’s decaying horizon to the cosmic horizon’s eternal persistence, and that makes all the difference.

Come learn why even with dark energy, we don’t lose information about the Universe, but why the black hole information paradox is real!

a galactic rainbow

Episode 2 of Drunk Science is live!! We're launching rockets and talking aerodynamics and stomping on things. It's a nonstop party. #drunkscience #funny #stem #aerodynamics #rocket #jokes #experiments #science http://ift.tt/2n0NeEl

Time for another comic on our reddish dwarf planet, Makemake!

(Polaris is pushed for tomorrow ;) )

http://www.space.com/23122-makemake.html

Quick screenshot of episode 2, dropping on Saturday morning at 10:30!! Whew! #drunk #science #funny #jokes #experiments #blerd #rockets #aerodynamics http://ift.tt/2nK23sn

one of my third graders has a special talent for making 2-frame comics that really speak to me

I was gonna make a chemistry pun but it was sodium

So I was like Na

It would just make you salty