David Greene speaks with NPR's Joe Palca about Morning Edition's upcoming series, "Summer Science."
Here's something simple to think about (not).
Think about "now." Too late, it's already become "then."
"Now" on the sun takes 8 minutes to get to Earth. It still looks like a "now." But it's a then.
When a mosquito bites you "now," it takes a teeny amount of time for that "now" to reach your brain.
Originally published on Fri May 25, 2012 1:35 pm
Originally published on Thu May 24, 2012 8:42 am
Astronauts on board the international space station got a chance earlier today to see the private unmanned Dragon spaceship that was launched on Tuesday by SpaceX, of Hawthorne, Calif.
NASA astronaut Don Pettit, who is living on the station, was talking to Houston's Mission Control when he suddenly reported that he had spotted Dragon. "I'm looking at Dragon right now," he said.