What is the significance of the discovery of the exoplanet with a mass similar to that of Neptune?

The discovery of an exoplanet with a mass similar to that of Neptune is significant because it provides insights into the diversity of planetary systems beyond our solar system. The exoplanet, named TOI-1235 b, was discovered using the Transiting Exoplanet Survey Satellite (TESS) and has a mass about 5 times that of Earth, making it one of the lightest exoplanets with a measured mass.

The study of exoplanets with masses similar to that of Neptune is important because it helps astronomers understand how planets form and evolve. TOI-1235 b's relatively low mass suggests that it is either a gas giant with a small core or an ice giant similar to Neptune or Uranus. Its proximity to its host star, a K-type dwarf, also makes it an interesting target for further study, as it may help scientists understand the effect of stellar irradiation on exoplanet atmospheres.