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.
If you are not a physicist, you may be asking yourself why so many science reporters are suddenly abuzz about gravitational waves and the phenomenon known as Cosmic Inflation. Perhaps this blog post can help answer that question. As an author of nearly 30 science books for young readers, I may be well equipped to … Read more