When NASA's InSight lander was on its seven-month trip to Mars, it wasn't alone. Two suitcase-size spacecraft, called MarCO, followed InSight on its journey. They were the first cube satellites to fly into deep space. And now, they've fallen silent.
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Thu, 02/07/2019 - 9:56am
When NASA's InSight lander was on its seven-month trip to Mars, it wasn't alone. Two suitcase-size spacecraft, called MarCO, followed InSight on its journey. They were the first cube satellites to fly into deep space. And now, they've fallen silent.