Astronomy
The Role of Solar Wind in Shaping Planetary Atmospheres
Quick fact
Mars is losing about 100 grams of its atmosphere every second because the solar wind erodes it, and scientists think this loss helped turn Mars from a warm, wet world into the cold desert it is today.
Why this is interesting
You've probably noticed the Sun's glow, but did you know that a relentless invisible wind from it can strip away a planet's air? What does that mean for Mars and for our own future?