This week on Science, Dustin and Jeff look at some of the first pictures sent back from the InSight lander after its successful touchdown on Mars. If you watched the landing live from NASA, you saw how excited everyone was at mission control and the now iconic NASA handshake. (Head over to nasa.gov for all the coverage). Then, new data suggests that ancient cave art might have actually been using astronomy to record dates and times, and also keep a record of celestial events like comet strikes.

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