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deathentry t1_itdzvzi wrote

except plutonium-238 to power space equipment was made during nuclear weapons manufacturing.. https://www.planetary.org/articles/plutonium-power-for-space-missions.

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Decronym t1_j7zqi47 wrote

Iron/steel) [Face-Centered Cubic](https://en.wikipedia.org/wiki/Allotropes_of_iron) crystalline structure| |[GTO](/r/Space/comments/10yj1g7/stub/j80x8fr "Last usage")|[Geosynchronous Transfer Orbit](http://www.planetary.org/blogs/jason-davis/20140116-how-to-get-a-satellite-to-gto.html)| |[HLS](/r/Space/comments/10yj1g7/stub/j80x8a0 "Last usage")|[Human Landing System](https://en.wikipedia.org/wiki/Artemis_program#Human_Landing_System) (Artemis)| |[SLS](/r/Space/comments/10yj1g7/stub/j87mfyw "Last usage")|Space

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Perfect-Editor-5008 t1_jc0z6gs wrote

smoking?! It *does* look different with the naked eye depending on what hemisphere you're in. https://www.planetary.org/articles/can-the-moon-be-upside-down https://www.sciencefocus.com/science/does-the-moon-look-upside-down-in-the-southern-hemisphere/amp/ https://www.sciencealert.com/the-moon-is-upside-down-in-the-northern-southern-hemisphere-and-how-did-we-not-know-this

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Decronym t1_jdkqyga wrote

/wiki/Evolved_Expendable_Launch_Vehicle)| |[GEO](/r/Space/comments/120ws6p/stub/jdw9wo7 "Last usage")|Geostationary Earth Orbit (35786km)| |[GTO](/r/Space/comments/120ws6p/stub/jdxdb7k "Last usage")|[Geosynchronous Transfer Orbit](http://www.planetary.org/blogs/jason-davis/20140116-how-to-get-a-satellite-to-gto.html)| |[HLS](/r/Space/comments/120ws6p/stub/jdza5zc "Last usage")|[Human Landing System](https://en.wikipedia.org/wiki/Artemis_program#Human_Landing_System) (Artemis)| |[LEO](/r/Space/comments/120ws6p/stub/jdw9wo7 "Last usage

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