Artist’s impression of an exoplanetary system [credit: NASA] The three exoplanets of the TOI-1749 system are labelled b, c and d. A year ago, an article in the Astronomical Journal on this system by a group of scientists noted a near 2:1 orbital ratio of planets c and d, but made no reference to synodic […]
Lucas resonances of the three planet system TOI-1749
Glyn Hnutu-healh: History, Alchemy, and Me 