Physique-Chimie

Lycée et enseignement supérieur

Attention :
Pour des raisons de sécurité, les expériences décrites dans les documents ne doivent être effectuées que par un professeur dans un laboratoire de Physique-Chimie.

International Astronomy and Astrophysics Competition (IAAC)



	Présentation de l'IAAC : https://iaac.space/fr/


	2025
	Qualification round Problem A : Reflector telescope Problem B : Distance to Alpha Centauri Problem C : Density of planets Problem D : Cosmological model Problem E : Comets Énoncé : https://iaac.space/docs/problems/2025/IAAC_Qualification_Round_2025.pdf Solution : https://iaac.space/docs/problems/2025/IAAC_Qualification_Round_2025_Solution.pdf Pre-Final Round Problem A.1 : Scales of gravitation Problem A.2 : Variable star Problem B.1 : Brightness of the night sky Problem B.2 : Non-relativistic Friedmann equation Problem C.1 : Milky Way-Andromeda collision Problem C.2 : New solar system objects Énoncé : https://iaac.space/docs/problems/2025/IAAC_Pre_Final_Round_2025.pdf Solution : https://iaac.space/docs/problems/2025/IAAC_Pre_Final_Round_2025_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2025/IAAC_Final_Round_2025.pdf Solution : https://iaac.space/docs/problems/2025/IAAC_Final_Round_2025_Solution.pdf


	2024
	Qualification round Problem A : The southern hemisphere Problem B : Stars in the Milky Way Problem C : Gravity at the ISS Problem D : Field of view of the ISS Problem E : Microwave background Énoncé : https://iaac.space/docs/problems/2024/IAAC_Qualification_Round_2024.pdf Solution : https://iaac.space/docs/problems/2024/IAAC_Qualification_Round_2024_Solution.pdf Pre-Final Round Problem A.1 : Rotation of the Earth Problem A.2 : Altitude of the ISS - Part 1 Problem B.1 : Altitude of the ISS - Part 2 Problem B.2 : Stars in the Milky Way Problem C.1 : Einstein ring around galaxy Problem C.2 : Volcanic activity on Io Énoncé : https://iaac.space/docs/problems/2024/IAAC_Pre_Final_Round_2024.pdf Solution : https://iaac.space/docs/problems/2024/IAAC_Pre_Final_Round_2024_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2024/IAAC_Final_Round_2024.pdf Solution : https://iaac.space/docs/problems/2024/IAAC_Final_Round_2024_Solution.pdf


	2023
	Qualification round Problem A : The classification of galaxies Problem B : The speed of light Problem C : Elliptical orbit Problem D : Distance between stars Problem E : Dark energy Énoncé : https://iaac.space/docs/problems/2023/IAAC_Qualification_Round_2023.pdf Solution : https://iaac.space/docs/problems/2023/IAAC_Qualification_Round_2023_Solution.pdf Pre-Final Round Problem A.1 : Parabolic trajectory Problem A.2 : Brightness of a binary star Problem B.1 : Temperature of the sun Problem B.2 : Escaping a star Problem C.1 : Zhurong rover Mars landing Problem C.2 : Young stars in the galactic centre Énoncé : https://iaac.space/docs/problems/2023/IAAC_Pre_Final_Round_2023.pdf Solution : https://iaac.space/docs/problems/2023/IAAC_Pre_Final_Round_2023_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2023/IAAC_Final_Round_2023.pdf Solution : https://iaac.space/docs/problems/2023/IAAC_Final_Round_2023_Solution.pdf


	2022
	Qualification round Problem A : The James Webb Space Telescope Problem B : Very dense Earth Problem C : Asteroid Field Problem D : Position of the JWST Problem E : Infrared radiation Énoncé : https://iaac.space/docs/problems/2022/IAAC_Qualification_Round_2022.pdf Solution : https://iaac.space/docs/problems/2022/IAAC_Qualification_Round_2022_Solution.pdf Pre-Final Round Problem A.1 : Looking back with the JWST Problem A.2 : Counting asteroids Problem B.1 : Rotating the JWST Problem B.2 : Changing temperature Problem C.1 : The surface of planets Problem C.2 : Black holes and the JWST Énoncé : https://iaac.space/docs/problems/2022/IAAC_Pre_Final_Round_2022.pdf Solution : https://iaac.space/docs/problems/2022/IAAC_Pre_Final_Round_2022_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2022/IAAC_Final_Round_2022.pdf Solution : https://iaac.space/docs/problems/2022/IAAC_Final_Round_2022_Solution.pdf


	2021
	Qualification round Problem A : Observing the night sky Problem B : Shock wave escape Problem C : Mysterious planet Problem D : Gravitational constant Problem E : Pulsars Énoncé : https://iaac.space/docs/problems/2021/IAAC_Qualification_Round_2021.pdf Solution : https://iaac.space/docs/problems/2021/IAAC_Qualification_Round_2021_Solution.pdf Pre-Final Round Problem A.1 : Equatorial coordinate system Problem A.2 : Resolution of telescopes Problem A.3 : Total Solar escape Problem A.4 : Special relativity - Part I Problem B.1 : Space cannon Problem B.2 : Shock wave Problem B.3 : Interplanetary journey Problem B.4 : Special relativity - Part II Problem C.1 : Earliest galaxy group Problem C.2 : Massive protostar jet Énoncé : https://iaac.space/docs/problems/2021/IAAC_Pre_Final_Round_2021.pdf Solution : https://iaac.space/docs/problems/2021/IAAC_Pre_Final_Round_2021_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2021/IAAC_Final_Round_2021.pdf Solution : https://iaac.space/docs/problems/2021/IAAC_Final_Round_2021_Solution.pdf


	2020
	Qualification round Problem A : The solar system Problem B : Cosmic scales Problem C : Distance to the moon Problem D : Energy of satellites Problem E : Nuclear fusion Énoncé : https://iaac.space/docs/problems/2020/IAAC_Qualification_Round_2020.pdf Solution : https://iaac.space/docs/problems/2020/IAAC_Qualification_Round_2020_Solution.pdf Pre-Final Round Problem A.1 : Insterstellar mission Problem A.2 : Time dilation Problem A.3 : Magnitude of stars Problem A.4 : Emergency landing Problem B.1 : Temperature of Earth Problem B.2 : Distance of the planets Problem B.3 : Mysterious object Problem B.4 : Distribution of dark matter Problem C.1 : Detection of gravitational waves Problem C.2 : First image of a black hole Énoncé : https://iaac.space/docs/problems/2020/IAAC_Pre_Final_Round_2020.pdf Solution : https://iaac.space/docs/problems/2020/IAAC_Pre_Final_Round_2020_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2020/IAAC_Final_Round_2020.pdf Solution : https://iaac.space/docs/problems/2020/IAAC_Final_Round_2020_Solution.pdf


	2019
	Qualification round Problem A : Planet and stars Problem B : The size of Jupiter Problem C : Space race to the moon Problem D : Forces between Earth and Moon Problem E : Polar lights Énoncé : https://iaac.space/docs/problems/2019/IAAC_Qualification_Round_2019.pdf Solution : https://iaac.space/docs/problems/2019/IAAC_Qualification_Round_2019_Solution.pdf Pre-Final Round Problem A.1 : Journey to Proxima Centauri Problem A.2 : Orbit of the solar system Problem A.3 : Distance to Actarus Problem A.4 : From Earth to Mars Problem B.1 : New star Problem B.2 : Moon satellite Problem B.3 : Binary star system Problem B.4 : Asteroid collision Problem C.1 : The Sunburst Arc Problem C.2 : Dark matter Énoncé : https://iaac.space/docs/problems/2019/IAAC_Pre_Final_Round_2019.pdf Solution : https://iaac.space/docs/problems/2019/IAAC_Pre_Final_Round_2019_Solution.pdf Final Round Énoncé : https://iaac.space/docs/problems/2019/IAAC_Final_Round_2019.pdf Solution : https://iaac.space/docs/problems/2019/IAAC_Final_Round_2019_Solution.pdf