Saturn overtakes Jupiter as planet with most moons - BBC News
New-Found Dwarf Planet Points to Solar System's Chaotic Past - Eos
Martian moon's orbit suggests the Red Planet had a ring | Space
Claim for giant 'Planet Nine' at Solar System's edge takes a hit | Science | AAAS
Why do the planets in the solar system orbit on the same plane? | Live Science
Is a planet's orbital period related to the planet's size? | Socratic
New Clue to “Planet Nine” – Hubble Pins Down Weird Exoplanet With Far-Flung Orbit
The planets that orbit a backward-spinning star
orbit | astronomy | Britannica
What Would it Be Like if Earth Changed its Orbit? » Science ABC
Solar system planets, order and formation: A guide | Space
Hubble Pins Down Weird Exoplanet with Far-Flung Orbit – Exoplanet Exploration: Planets Beyond our Solar System
Artist's concept of nearest extrasolar planet to our Solar System | ESA/Hubble
For life to form on a planet it needs to orbit the right kind of star
We've found an exo-planet with an extraordinarily eccentric orbit
Astronomers Discover Planet with Largest Orbit Ever | Sci-News.com
EarthSky | Meet the Pi planet. It orbits its star every 3.14 days
Do other planets in the solar system have orbital tilt and seasons? | CBC Radio
Astronomers Have Found Another Possible 'Exomoon' beyond Our Solar System - Scientific American
Planet 9 location, orbit, distance, name, and black hole theory for the mysterious object
This weird 'whiplash' planet is unlike anything astronomers have ever seen
The planets that orbit a backward-spinning star
Scientists discover planet orbiting three stars 'like Tattooine' could be hiding an even bigger secret | The Independent
A Super-Earth May Orbit Proxima Centauri, the Closest Star to the Sun
New Study Knocks Theory of Planet Nine's Existence Out of Orbit | Smart News| Smithsonian Magazine
Newfound Alien Planet Has a Bizarre Looping Orbit - Scientific American
ESO
Kepler-90 Planets Orbit Close to Their Star | NASA
The Orbit of the Planets. How Long Is A Year On The Other Planets? - Universe Today
