This Call for proposals covers the first planning cycle of the new Cosmic Vision

This Call will lead to the selection of one-medium sized mission (Class M mission)
to enter the implementation phase in 2012, with a launch foreseen in the mid-2017
time-frame. The Call also invites proposals for concepts of more ambitious missions
of the flagship category (Class L mission concepts) that will require an extended

The proposals will be subjected to the ESA Science Programme competitive selection
procedure detailed in the Call itself.

The deadline for submission of Letters of Intent is 30 March 2007.

Full details at: