The launch plume from MSL's Atlas-V. The input of water vapor into the normally dry mesosphere (at altitudes of around 80km) causes very high ice-water clouds known as "noctilucent" clouds to form. We contemplate the shapes we see in the sky and like the ancient Romans, trying to read auspices, we hope to glean the relevance to our own future of such ephemeral and changing patterns.
On the morning of November 26, as we were boarding our busses to head to the MSL Launch viewing area near the VAB, the brilliant sunrise lit up the light, misty rain we had passed through on the causeway over towards cape canaveral. The refraction through the particles generated a vivid rainbow which seemed to touch the ground in the general direction of pad 41, where the Atlas-V rocket that MSL would ride on its way to Mars was being prepared for departure. We took it as a good omen, and a few hours later, everything went right with the launch.

