ESO
Martian moon's orbit suggests the Red Planet had a ring | Space
Saturn overtakes Jupiter as planet with most moons - BBC News
orbit | astronomy | Britannica
ViewSpace | Exoplanet Diversity: Orbital Distance
A New World's Extraordinary Orbit Points to Planet Nine | WIRED
Planet Orbits - Space Facts
An 8th Planet Is Found Orbiting a Distant Star, With A.I.'s Help - The New York Times
EarthSky | Meet the Pi planet. It orbits its star every 3.14 days
File:Planet Nine Orbit.svg - Wikimedia Commons
Why do the planets in the solar system orbit on the same plane? | Live Science
We've found an exo-planet with an extraordinarily eccentric orbit
Is a planet's orbital period related to the planet's size? | Socratic
The planets that orbit a backward-spinning star
Kepler-90 Planets Orbit Close to Their Star | NASA
Do other planets in the solar system have orbital tilt and seasons? | CBC Radio
The planets that orbit a backward-spinning star
Mars - Basic astronomical data | Britannica
Hubble Pins Down Weird Exoplanet with Far-Flung Orbit – Exoplanet Exploration: Planets Beyond our Solar System
Scientists discover planet orbiting three stars 'like Tattooine' could be hiding an even bigger secret | The Independent
This weird 'whiplash' planet is unlike anything astronomers have ever seen
ESO
TESS discovers its third new planet, with longest orbit yet | MIT News | Massachusetts Institute of Technology
Claim for giant 'Planet Nine' at Solar System's edge takes a hit | Science | AAAS
The Orbit of the Planets. How Long Is A Year On The Other Planets? - Universe Today
