More Laser Propulsion

The probes, each weighing a single gram, would ride on a laser beam shot from orbit around Earth and would carry tiny sensors to take measurements and transmitters to report back what they found.

I can't imagine too many sensors and a transmitter capable of sending a signal light years on a 1 gram space probe.

would I mislead you? think manufacturing in the weightless environment of the ISS and 1 atom thick graphene transistors

Unless those 1 atom thick transistors can handle a lot of power, the SNR is going to be pretty low a few light years away.