- Despite being the 1st candidate planet discovered by the Kepler telescope, Kepler-1658b had a rocky road to confirmation. 10 years later, scientists have now confirmed that it is, in fact, a planet. It whips around its star every 3.85 days. https://exoplanets.nasa.gov/news/1552/discovery-alert-keplers-first-planet-candidate-confirmed-10-years-later/?utm_source=twitter&utm_medium=nasa&utm_campaign=nasasocial&linkid=64399038 10 comments space