It's 100,000 laps around Earth and counting for the International Space Station.
The space station reached the orbital milestone, 17 years in the making, on Monday morning.
NASA said these 100,000 orbits are akin to travelling more than 4.18 billion kilometres.
That's equivalent to 10 round trips to Mars, or almost one way to Neptune.
Each orbit takes about 90 minutes; 16 orbits comprise a station day.
Astronauts have been living continuously aboard the 402km high complex since 2000.
Construction began two years before that.
Since then, 222 people have lived or visited there, the vast majority of them men, according to NASA.
Altogether, there have been 47 permanent crews representing the US, Russian, Canadian, Japanese and European space agencies.
Two Americans, three Russians and one Englishman currently call the space station home.
They recently achieved a photographic milestone, snapping the three millionth picture taken over the years from the scientific outpost.
"One-hundred-thousand orbits, the journey continues," NASA astronaut Jeffrey Williams said in a celebratory video from space.
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