Planet Nine was previously suggested as a possible explanation for distant orbital clustering. It was thought to be ten times Earth’s mass, orbiting far beyond Neptune.

W ith Borderlands 3 and its divisive story in the rearview mirror, developer Gearbox Software is driving full speed ahead to Borderlands 4 and the totalitarian planet of Kairos.

Recent research suggests a warp in the orbital plane of Trans-Neptunian Objects (TNOs) between 80 and 400 AU, hinting at the ...