クリスティーズさんのインスタグラム写真 - (クリスティーズInstagram)「Sculpted by nature. ☄️⠀ .⠀ This specimen is in the rare 1% of meteorites that experience minimal tumbling during its plunge through our atmosphere.⠀ .⠀ The parabolic face seen here was, in effect, carved by frictional heating as this meteorite rocketed through Earth's atmosphere. The curvature of this parabola is the precise angle at which heat is most efficiently deflected from any object that penetrates the atmosphere — and this same curvature seen in oriented meteorites inspired the design of the heat shields for NASA's Mercury, Gemini and Apollo capsules. 🤓⠀ .⠀ Spectacular Oriented Stone Meteorite, The Sahara Desert. Estimate: $50,000-80,000.⠀ .⠀ Deep Impact: Martian, Lunar and Other Rare Meteorites — 9 February-23 February, online⠀ .⠀ #meteorite #saharadesert #spacerock #sculptedbyscience #outerspacesculpture #deepimpact」2月23日 3時15分