HazCam and the wheel
This image shows the crash site of the Mars rover Curiosity's sky crane, the rocket-powered backpack that lowered Curiosity down to the Martian surface. Haven't seen this one before. That's quite an impact.
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...the young Universe was filled with a hot dense soup of interacting protons, electrons and photons at about 2700ºC. When the protons and electrons joined to form hydrogen atoms, the light was set free
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