Germany's Isar and RFA, France's Maiaspace, Spain's PLD Space, and UK-based Orbex have been pre-selected for ESA's €169 million launcher initiative.
Stars of all ages and masses emit electromagnetic energy in different ways, and these emissions attract the attention of astronomers. Each of these emissions is a clue to how stars form, evolve, and even die. Young stars are known for their high luminosity and their high level of activity. They have strong stellar winds and powerful magnetic fields.

