October 2015 marked the 20th anniversary of the first generally accepted detection of a planet orbiting a Sun-like star beyond our Solar System, giving rise to a new class of planet - a 'Hot Jupiter'. It is now one of the dominant types of planet found by spacecraft such as Kepler.
InSight probe to study the red planet from inside out
Astronomical bounty from NASA’s Transiting Exoplanet Survey Satellite (TESS)
Using plasma magnet propulsion for rapid solar sailing