Very neat article. Nasa and ETH Zurich noticed the Martian moon Phobos during the eclipse using a seismometer. The effect is tiny, but their hypothesis is that this is caused by the top level of ground rapidly cooling. The effect can be used to determine the material of the ground. Separately, this can help determine Phobos' orbit more accurately.

> “This tilt is incredibly small,” Stähler notes. “Imagine a 5- franc coin; now, push two silver atoms under one edge. That’s the incline we’re talking about: 10-8.” As slight as this effect was, it was still unmistakable.