MicroFactzzz#0021 · 🌌 Cosmic Oddities
Pluto Hasn't Even Finished One Year Since We Discovered It
Pluto orbits the Sun once every 248 Earth years, and it was discovered in 1930 — it hasn't completed a single full lap yet.
Pluto, regardless of the debate over its planetary status, travels around the Sun on a very distant, elongated orbit, taking roughly 248 Earth years to complete one full circuit.
It was discovered in 1930. Less than a hundred years have passed since then — Pluto hasn't even made it halfway around the Sun from the position it was in when it was discovered.
That means Pluto won't return to the exact spot on its orbit where astronomer Clyde Tombaugh first spotted it until the 22nd century.
Perspective: no one alive today will ever witness Pluto complete one full "year" from its discovery back to that starting point.
Sources
- General knowledge / encyclopedic sources
This fact is based on generally available knowledge, not a single, citable source. See how we approach verification.
Krulicza Nora
Want to go deeper?
- Cosmic Oddities
A Single Day on Venus Lasts Longer Than Its Entire Year
Venus spins on its axis so slowly that one day there is longer than one full trip around the Sun.
Learn more → - Cosmic Oddities
The Biggest Canyon in the Solar System Isn't on Earth
Valles Marineris on Mars is so long that, stretched across the US, it would span an entire continent.
Learn more → - Cosmic Oddities
The Sun Basically IS the Solar System — Everything Else Is a Rounding Error
The Sun holds over 99.8% of all the mass in the Solar System — every planet combined barely registers.
Learn more → - Cosmic Oddities
Earth's Day Used to Be Less Than 19 Hours Long
Tidal friction caused by the Moon is slowly braking Earth's rotation, so the day has been gradually stretching for billions of years.
Learn more →