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Canonical Source · peer reviewed study
This page documents how this source is reused across Claim by Claim. A source can support, challenge, qualify or contextualize different claims; appearing here does not imply endorsement of every linked proposition.
Evidence context
Evidence roles describe what this source helps establish inside each Investigation. They are local to that use, not permanent labels attached to the publication itself.
Investigation
An original neutral mass-spectrometry investigation sampled atmospheric oxygen and nitrogen across more than 80 operating orbits near 200 km, inconsistent with a dome that prevents orbital spaceflight.
Investigation
Rocket and satellite instruments directly measure sparse atmospheric constituents at 150–200 km, inconsistent with an abrupt pressure wall requiring a solid lid.
Subject families