NASA discovers a rare Neptune-sized planet and its bizarre mystery will shock you

Astronomers have just discovered a planet called TOI-3261 b and this rare Neptune-sized planet has a year which lasts just 21 hours. This means it completes its orbit around its star in less than a day, which is quite surprising. TOI-3261 b is part of a group known as ultra-hot Neptunes which consist of large and hot planets that orbit very close to their stars.