[Doctor Stochastic]

Not directly observed. This has happened before. The neutron was hypothesized to explain atomic weights (inter alia) and the neutrino to explain beta decay (if my memory is correct.) At that time (late 1920s), there were two unobserved, but hypothesized, particles.

[jwalsh07]

Not directly observed.

Why not? Shouldn't a Universe comprised of 90% dark matter allow us to assume that our galaxy would be similarly endowed.

Why can't we observe the bending of light resulting from gravitational force's of dark matter routinely?

Have their been any signifcant studies of by astrophysicists trying to observe same?

[js1138]

Looks like Calvin has been released from the timeout room.