SODISM is a kind of camera onboard the satellite Picard in orbit around the Earth. SODISM regularly takes photos of the Sun to study its atmosphere. We will use these images obtained during the transit of Venus (passage of Venus in front of the Sun for an observer on Earth) to explore the peculiarity of the space experiments. For this we will use true scientific observations.


Understand some operational parts of a space experiment on real example.


SODISM experiment onboard PICARD and it observations of Venus transit on the Sun.

But first, some definitions and reminder of the scientific objectives of SODISM.

PICARD is a French satellite dedicated to Solar studies.

SODISM is dedicated to the measure of the solar diametre and its variations related to the SUN-Climate of the Earth’s relations.

SODISM is a telescope taking images of the Sun.

SODISM is not the first to measure the solar diameter, but he makes it with a very high precision.

The Solar diametre is it variable during time ?

Is it affecting the climate of the Earth ?

These are  two important questions scientist want to answer.