What's the difference?

Micro-rockets

have propellant motors (using blasting powder) and can reach an altitude of 400m at 200 km/h. They only weight 600 g. It takes 3 days to train the budding young scientists.

In Guiana the rockets are launched from the Space Museum.

Mini-rockets

have boosters (composite powder) and can reach 1 to 1.5 km in altitude at more than 200 km/h. They weigh between 1 and 2 kg and are 1.5 metres long.

In Guiana they are launched from the Sounding Rockets site as it is no longer being used for real rockets. A week's training is needed.

Experimental rockets

have boosters, can climb to 2 km in altitude and weight about 10 kg! The Educational Action Project (PAE) needs more than a year to achieve this mission.

Stratospheric balloons

are made of latex (5m3) and reach an altitude of 35 km. If the parachute deploys correctly the pod lands from 200 to 300 km away. Several months of work are required.