Recent content by jchamot

Joe -- as a gravitational wave passes, do atoms and molecules distort, or just the fabric of space time in which they reside? If just the fabric, is the fabric the only "material" directly affected (save teh stretching of photons)?

I recently read that the observable universe is some 93 billion light years across. And yet, the universe's age is less than 13 billion years. So is expansion faster than the speed of light? How do we account for this discrepancy? Thanks, Joe!

Did you mean difference between astronomy and planetary science? They do overlap, for sure, with astronomy more focused on stars. galaxies and other objects at scale and planetary specifically looking at the rocky bodies of planets, asteroids, and comets. Interestingly, a lot of the tools to...

This is such a great question... is it possible to love both? The remaster is stunning, but from time to time, it's just fun (and authentic) to watch the original effects...with the Doomsday Machine looking so much like a cannoli being one of them, yet benefitting so much from the upgrade...

The clock is exactly the analogy I needed, I've been wondering about this for a year......I'd never made the connection to Andrea's discovery, but of course this now makes sense. I love Nicolle's image on that release...Thanks, Joe!

Hey Akli!! Great to see you made it on to the forum!!

I've got one...Since time slows near the event Horizon, and basically stops at the singularity (correct?), then when we see objects fall towards a black hole from our position on Earth, what is the relative state of time -- to us -- for that object we are observing? In other words, when...