New detailed observations with NSF’s NOIRLab facilities reveal a young exoplanet, orbiting a young star in the Hyades cluster, that is unusually dense for its size and age. Weighing in at 25 Earth-masses, and slightly smaller than Neptune, this exoplanet’s existence is at odds with the predictions of leading planet formation theories.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/4-surprisingly.jpg)
Source:
https://phys.org/news/2020-08-surprisingly-dense-exoplanet-planet-formation.html