On today's episode of our "Ask A Physicist" series, Dr. Goldberg tackles the darker side of the universe - Dark Matter, that is. What is this curious cosmic stuff, and why should we care?
How Smart Do You Need To Be To Collapse A Wave Function?
Here's the latest entry in our "ask the physicist"
One of the most popular questions from our "ask a physicist" feature was, "What happens if you're driving at the speed of light and you turn on your headlights?" The simple answer: You can't. So quit trying.
If The Universe Is Expanding, What's It Expanding Into?
Last week the readers of io9 asked their most nagging questions about physics to a real-live physicist
This weekend you can ask a real, live physicist (me) any question you like - nothing is too stupid, or too weird. And next week, you'll get answers!
To the Writers and Director of "Hot Tub Time Machine," From A Physics…
Noted time-travel expert Dave Goldberg, a physics professor at Drexel University, just saw Hot Tub Time Machine and was - disturbed. Here he explains the "egregious number of inviolable paradoxes" in the film, in an open letter to its creators.
