SpaceX will try again today to launch two NASA astronauts to the Space Station. Liftoff is set for 3:22 pm Eastern and all the same channels and sources from NASA TV to YouTube will carry it live. Weather is iffy again, however, with T'storms predicted for all afternoon. If they can't go today, there is another chance tomorrow. Launch opportunities are set by the path of the Space Station, with only a narrow variance of inclination allowed in its ground track to be able to catch it. It has to pass almost directly over the launch site.
