{"id":58426,"date":"2025-07-12T02:15:10","date_gmt":"2025-07-12T02:15:10","guid":{"rendered":"https:\/\/www.europesays.com\/us\/58426\/"},"modified":"2025-07-12T02:15:10","modified_gmt":"2025-07-12T02:15:10","slug":"what-happens-when-you-throw-a-paper-plane-from-space-these-physicists-found-out","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/58426\/","title":{"rendered":"What Happens When You Throw a Paper Plane From Space? These Physicists Found Out"},"content":{"rendered":"

\"\"<\/a>Credit: ZME Science\/SORA.<\/p>\n

What would happen if you threw a paper airplane from the International Space Station? It\u2019s the sort of idea that might emerge from a curious child \u2014 or a physicist with a flair for wonder. Maximilien Berthet and Kojiro Suzuki, researchers at the University of Tokyo, decided to find out.<\/p>\n

Their answer is part serious engineering analysis, part scientific whimsy, and wholly captivating.<\/p>\n

Their experiment didn\u2019t involve astronauts flinging paper darts out of airlocks (wouldn\u2019t that be something?). Instead, the researchers combined high-fidelity computer simulations with blistering wind tunnel tests to explore how a folded A4 sheet of paper might behave if launched from low Earth orbit.<\/p>\n

A Descent Like No Other<\/p>\n

\"Diagram <\/a>Paper plane trajectory thrown from orbit. Credit: NASA\/ESA\/M. Berthet & K Suzuki.<\/p>\n

From the moment the simulated origami plane leaves the ISS (some 400 kilometers above Earth), it begins its doomed descent. Unlike a spacecraft designed to slice through the atmosphere with shielding and engines, this tiny paper glider weighs just four grams. Its surface is cellulose and kaolinite, not titanium or carbon fiber. And yet, for a time, it soars.<\/p>\n

Thanks to its airplane-shaped folding, the paper plane is statically stable in the vacuum-like upper reaches of space. It points nose-first into the airstream, guided by the subtle aerodynamic forces acting on its paper form.<\/p>\n

This initial phase of descent, researchers found, is surprisingly calm. The plane passively maintains orientation for several days as it spirals downward, shedding altitude rapidly. \u201cAtmospheric entry from a 400 km circular orbit occurs within a few days,\u201d the authors write.<\/p>\n

But then after around four days and at around 120 kilometers \u2014 just above the region where satellites begin to burn \u2014 gentle descent gives way to chaos.<\/p>\n

Controlled Flight Gives Way to Tumbling Fire<\/p>\n

The thin air thickens. Drag surges. The plane begins to tumble. The simulations, based on equations tracking orbital mechanics, rotation, and aerodynamic drag, show the once-stable dart now spins uncontrollably.<\/p>\n

This can only mean one thing \u2014 heat. The paper would begin to burn.<\/p>\n

To verify their models, the researchers turned to hardware. They folded a scaled-down version of the origami plane and placed it into the Kashiwa Hypersonic and High Enthalpy Wind Tunnel in Tokyo. Then they blasted it with Mach 7 winds \u2014 over 1,000 meters per second \u2014 for seven seconds straight.<\/p>\n

The plane\u2019s paper nose began to bend backward under the force, forming a 3 mm ridge. The tip darkened and wing edges charred. Despite the onslaught, the plane held together \u2014 but barely.<\/p>\n

\u201cCombustion or pyrolysis is expected during atmospheric entry,\u201d the authors concluded. It was, for all intents and purposes, a one-way trip.<\/p>\n

Why Launch a Paper Plane From Space?<\/p>\n

The idea may sound whimsical, but this tiny experiment carries weightier implications.<\/p>\n

First, there\u2019s sustainability. In an era where space debris crowds low Earth orbit and satellite mega-constellations are multiplying, the researchers note a growing interest in using organic, biodegradable materials for space missions. Paper, largely plant-based, could offer a cleaner way to dispose of lightweight objects or components through passive atmospheric reentry. Japan, for instance, launched a working wooden satellite in space that operated for 116 days. It\u2019s launching a second<\/a>, improved version soon.<\/p>\n

More practically, a paper plane\u2019s rapid descent makes it a sensitive probe for studying the upper atmosphere if it were equipped with tiny sensors. Because of its low mass and large surface area, its trajectory is highly responsive to small changes in air density\u2014information that\u2019s still difficult to collect at altitudes between 200 and 300 kilometers.<\/p>\n

\u201cThe paper space plane\u2019s strong sensitivity to aerodynamic drag . . . suggests it could be used as a passive probe for atmospheric density measurement,\u201d the authors write.<\/p>\n

In the end, the origami space plane does exactly what you\u2019d expect of something made from office supplies hurled into Earth\u2019s atmosphere: it burns up.<\/p>\n

But along the way, it teaches us something new. Not just about aerodynamics or orbital decay, but about creativity, sustainability, and the spirit of scientific curiosity.<\/p>\n

The study was published in the journal Acta Astronautica<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"Credit: ZME Science\/SORA. What would happen if you threw a paper airplane from the International Space Station? It\u2019s…\n","protected":false},"author":3,"featured_media":58427,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[42594,3057,42595,42596,492,159,67,132,68],"class_list":{"0":"post-58426","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physics","8":"tag-aerodynamics","9":"tag-international-space-station","10":"tag-origami","11":"tag-paper-plane","12":"tag-physics","13":"tag-science","14":"tag-united-states","15":"tag-unitedstates","16":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/114837856493719107","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/58426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=58426"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/58426\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/58427"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=58426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=58426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=58426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}