Chris Hadfield
@Cmdr_Hadfield
Astronaut, back on Earth after 3 spaceflights.
For events and media, please write to info@chrishadfield.ca
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加入 September 2010
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We need heat shields to protect us, since we use the air to slow us down as we return to Earth.
From orbital speed, it gets to 1650°C / 3000°F. From the Moon: 2750°C / 5000°F.
For yesterday's Starship suborbital test flight, peak was 1450°C / 2600°F. Great to see the @SpaceX progress over the last 3 flights. Making them truly reusable is complex and necessary for permanent, cheap space access.
image compilation: @niccruzpatane
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