Multiple choice general knowledge science & technology

Astronauts become two inches taller on return from space as the cartilage disks in their spine expand in zero - gravity.

  1. True

  2. False

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In microgravity, the vertebral discs expand because they're not compressed by Earth's gravity. This can increase an astronaut's height by 1-2 inches. The effect is temporary - they return to normal height within days back on Earth as gravity recompresses the spine.