Let’s look at a world 635 lightyears away that just might have a fiery moon of volcanic goodness. To be honest, every aspect of this system is hot. The star is similar our Sun, but the planet is on an 2.8 day orbit around that star, and this orbit makes Mercury look super distant from the Sun. From our perspective here on Earth, this world, WASP-49 A, passes in front of its star, allowing us to see it’s size and the chemical make up of its atmosphere. Observations show the planet to be an extremely overheated and a sibling to Saturn. https://youtu.be/52uJItWKWH4?feature=shared Credit: NASA...

Artistic rendering of the possible view from LHS 3154b towards its low mass host star. Given its large mass, LHS 3154b probably has a Neptune-like composition. Credit: Penn State Solar systems keep finding new ways to surprise us and to convince us that we don’t...

https://youtu.be/KfZCGBhwpes In my personal opinion, one of the mathematically coolest things in our solar system is the orbits of Jupiter's three inner Galilean moons. It just happens, that these worlds orbit to a beat, with innermost Io circling four times for every...