Had a conversation with a rather intelligent coworker (happens to be a biology major), that didn’t know dark matter is. Intelligent people should have at least a vague idea what dark matter is. So here it is.
Dark matter is matter we think exists but can’t see. We think it is there because (for various reasons) galaxies seem to have way more mass than we can see. So far we haven’t been able to detect it.
There isn’t a very good candidate for dark matter in the Standard Model of particles, so if we did find it we would probably have to overhaul the Standard Model.
An alternative to dark matter would be that we don’t exactly understand gravity as well as we think. This would be tough too because the new theory would have to look a whole lot like the current theory…but different. To make this new theory we would need to find some discrepancy with the current theory and experiment.
As you know, we have serious concerns about the nature and goals of China’s space program and strongly oppose any cooperation between NASA and China
-Representative Frank Wolf et al to NASA Chief Charles Bolden
This only serves to make the United States more of a non-player on the international science scene. If you were truly concerned about China gleaning some kind of military knowledge or advantage over the US, then you could place a provision that limits the types of possible collaborations. But what conceivable advantage could they get? Its not like the Chinese can’t get a rocket into space without us.
A picture of what Republicans think NASA and China are building together.