Neal DeGrasse Tyson and Michio Kaku.
I also got my book signed. 

Death to the Regressives of the GOP and the TeaParty. No mercy for Conservatives. Burn them all at the stake for the hateful satanists they are.
Science Question
13/10/2012 09:01:08 PM
- 715 Views
In general, effects of gravity on a nanoscale system are negligible.
13/10/2012 09:54:50 PM
- 544 Views
To get an intuition of how weak gravity is...
13/10/2012 10:33:14 PM
- 493 Views
Perhaps I say it as should not, but that is oversimplified to the point of inaccuracy.
15/10/2012 11:16:50 PM
- 595 Views
You can calculate gravity pretty precisely, but let me explain conceptually how we know
14/10/2012 03:54:40 AM
- 538 Views
thanks all (and some more Qs)
14/10/2012 07:30:04 PM
- 517 Views
You're welcome and some more A's
15/10/2012 01:40:01 AM
- 534 Views
Then I have another question
16/10/2012 05:52:33 PM
- 504 Views
He's talking about the Andromeda Paradox
17/10/2012 07:11:01 AM
- 479 Views
I saw Brain Greene speak last year. It was pretty cool.
16/10/2012 04:15:00 AM
- 692 Views
only two scientists I'd like to meet more
16/10/2012 05:53:20 PM
- 498 Views