WASHINGTON — A European spacecraft is set to launch on a mission to help astronomers resolve an “embarrassing situation” in cosmology, although the launch itself is another kind of embarrassing situation for Europe. The European Space Agency’s Euclid spacecraft is ready to launch on a SpaceX Falcon 9 rocket. Liftoff is scheduled for 11:11 a.m. Eastern July 1 from Cape Canaveral Space Force Station, with favorable weather expected. Euclid features a telescope 1.2 meters across equipped with a camera operating at visible wavelengths and a near-infrared spectrometer and photometer. The two-ton spacecraft will operate at the Earth-sun L-2 point also…