Starship Asterisk*

Thanks Chris (most recently) and everyone else... this was fun and informative

Hello all Photons have mass. Phontons can be deflected by electromaganets, permanent magnets, deflected by water, unable to escape a black hole and so on. Photons have no rest mass. They do carry momentum and energy, however, since they can never be at rest, and mass and energy are relativistically...

Thanks guys for the replies... starnut's answer prompted another question. Starnut claims that photons have no mass. "Gravity can bend light" starts this APOD pic: http://antwrp.gsfc.nasa.gov/apod/ap040217.html . The only way gravity can bend light is if "light" has mass (somethi...

As a kid growing up in the space-minded 80s, I remember hearing about the "vacuum of space." Today's APOD http://antwrp.gsfc.nasa.gov/apod/ap060426.html , however, seems to suggest otherwise. I only have high-school physics, but seeing how the smaller fragments are lagging behind tells me ...