NASAのインスタグラム(nasagoddard) - 3月30日 00時16分

One hundred tons of atmosphere escape into space each day at Earth’s poles, but not to fear — this natural process takes billions of years, so we won’t run out any time soon.

Atmospheres change over time and are a key factor in the search for life on other planets. VISIONS-2, a sounding rocket, flew through Earth’s escaping atmosphere to shed light on how planetary atmospheres change, evolve and perhaps support life. 🚀

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