The EFT-1 flight will take Orion to an
altitude of more than 3,600 miles, more than 15 times farther away from Earth
than the International Space Station. Orion will return home at a speed of
25,000 miles, almost 5,000 miles per hour faster than any human spacecraft. It
will mimic the return conditions that astronauts experience as they come home
from voyages beyond low Earth orbit. As Orion reenters the atmosphere, it will
endure temperatures up to 4,000 degrees F., higher than any human spacecraft
since astronauts returned from the moon.
Image Credit: NASA/Eric Bordelon
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