Space Daily May 18, 2026 • 00:38

The ISS travels at 17,500 miles per hour, which means astronauts inside it are aging measurably slower than people on the ground, and by the time Scott Kelly returned from his year in orbit he was 5 milliseconds younger than his identical twin brother Mark. - Space Daily

The ISS travels at 17,500 miles per hour, which means astronauts inside it are aging measurably slower than people on the ground, and by the time Scott Kelly returned from his year in orbit he was 5 milliseconds younger than his identical twin brother Mark. - Space Daily

At 17,500 mph, the ISS produces real relativistic time dilation. After 340 days in orbit, Scott Kelly returned roughly 5 milliseconds younger than his identical twin brother Mark, a tiny but measurable confirmation of Einstein's special relativity in human fl…

Scott Kelly came home from 340 days on the International Space Station in March 2016 fractionally younger than the brother he had left behind. Not metaphorically. Measurably. By the calculation NASA … [+9662 chars]
Read Full Article on Original Site ↗ ← Back to News List

More from Space Daily

A glacier bigger than Washington state is melting faster than ever. The implications are dire - OregonLive.com

May 23, 2026

A fossil site in North Dakota appears to have captured the day the dinosaur-killing asteroid struck Earth, right down to tiny glass beads from the impact lodged in the gills of fish that died within hours - Space Daily

May 23, 2026

The Last Time The Clock Read 23:59:60 Was On December 31, 2016. It Will Not Happen Again This June - IFLScience

May 23, 2026

A slice of the static on an old untuned television was the afterglow of the Big Bang, which means millions of people spent decades staring at the oldest light in the universe without knowing it. - Space Daily

May 23, 2026