Youngest compact planetary system found, it's evolving - Space and Astronomy. The system, called TOI-5398, could become a milestone in understanding how this type of planetary system, of which only five other examples are known, is formed.
It consists of an inner planet a little smaller than Neptune and a hot giant with a mass similar to that of Saturn, which orbits the star in about 10 days. The result was obtained thanks to combined data from INAF's Telescopio Nazionale Galileo in the Canary Islands and NASA's Tess space telescope.