Jupiter-like planet 8 UMi b, named Halla, orbits its host red giant star Baekdu closely. The red giant's merger with a white dwarf star questions how Halla could exist.

Credit: Space.com | animation courtesy: W. M. Keck Observatory/Adam Makarenko | edited by Steve Spaleta
Music: Satellites by Ebb & Flod / courtesy of Epidemic Sound