• First Look As spacecraft nears Mars, NASA scientists hold their breath

    On Nov. 26, the Insight lander is scheduled to touch down on Mars. NASA last attempted a Mars landing – full of risks, tricky conditions, and delayed communication – six years ago. If it goes smoothly, the spacecraft will spend two years gathering data on the red planet. 

  • Convection: Currents you can see

    Convection, the transfer of heat via the movement of fluids, is one of the major processes that drive the weather. But if you want to visualize how it works, you might want to try using water instead of air.

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