If we are talking about clouds, we must mention Saturn’s polar vortex – a color-changing, hexagonal feature with an unclear origin. The hexagon was first observed in 1981 by Voyager, and then seen in better detail by Cassini.
We know that it changes from a blue hue to a golden color with the seasons, but physicists are still trying to understand how it formed. While researchers have been able to recreate hexagonal vortices in the lab, more needs to be done to fully understood it. For example, we don’t know why the southern pole of the ringed planet doesn’t have a similar system.
An Exoplanet Too Big For Its Star
NGTS-1b is a Jupiter-sized planet similar to the many hundreds that we have discovered in the last few decades. But unlike others, it orbits a red dwarf – a small star that is just about 12 percent of the Sun in volume.
Planets that big shouldn’t form around stars that small. According to the current view, dwarf stars can’t collect enough material to form big planets. And yet, somehow, one has. Researchers are now looking for more examples in order to better understand what’s going on.