This new information makes it pretty clear that the cause of the Pioneer Anomaly, that is the deviation of the Pioneer spacecraft from the trajectories dictated by gravity alone, is due to thermal sources internal to the spacecraft. A satisfying result, though it produces no new physics.
The arrival of Spring 2018 in my area has been marked by an unusually large outburst of pollen. In the science book world, it has been marked by an outburst of varied, interesting titles. And that is certainly nothing to sneeze at. One of the perks of being a reviewer of long standing is the … Read more