The European Space Agency's Comet Interceptor lies in wait

Nat Commun. 2019 Nov 28;10(1):5418. doi: 10.1038/s41467-019-13470-1.

Abstract

The European Space Agency (ESA) recently selected Comet Interceptor as its first ‘fast’ (F-class) mission. It will be developed rapidly to share a launch with another mission and is unique, as it will wait in space for a yet-to-be-discovered comet.