Why do you call that unknown?


And why do you think IASA will go the ELDO/ESRO route?
first question response
a lot of people know only ESA and still fewer heard from ELDO/ESRO and from GEERS very few
second question response
ELDO was a INTERNATIONAL space agency !
but is was doom from the beginn
foundet by France and England in 1961
it take to 1964 until ELDO can start to work
because the member countries separately stand to ratify ELDO Contracts in their parliament
there for the Minister responsible for ELDO financing had control over ELDO from 1961
and NOT the ELDO Administration !
in beginn England was a good Member of ELDO
but lack of success in Europa rocket test and Political change in England parliament, change that
each time Labor was the government, they demand the termination of ELDO membership
and use USA rockets for British spacecraft.
each time Tory was the government, they demand to stay ELDO member...
France had build Coralie second stage for Europa 1 rocket
but it was a not "matured" prototype and responsible for some failures launch in beginn
then France made very aggressive proposal to drop Coralie for Europa Rocket
and take Lox/Lh2 upper stage , something were the french had fewer experience than with the Coralie !
and that only a small part of unlucky history of ELDO-ESRO