At the beginning of October 1999, ESA issued a call for ideas for the next flexi-missions (F2 and
F3). A large number of proposals have been received and are being evaluated.

Flexi-missions were introduced into the Horizons 2000 implementation concept in 1997 to increase
the flexibility of the programme, basically by splitting each of the two Medium-size missions of
Horizons 2000 into two Flexi-missions (F-missions).

Three to four mission proposals will then be competitively selected via Peer Group reviews and in
full consultation with the advisory structure of the Science Programme. The selected missions will
undergo an assessment phase lasting from 1 March to end May 2000.

[NOTE: See the list of proposals at]


* Call for Proposals