astronomical phenomena

Solar and lunar eclipses: explanations and observations

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Les éclipses solaires et lunaires : explications et observations

IN BRIEF Eclipse: the appearance of a celestial body when another celestial body positions itself in front of it. Solar eclipse: the Moon partially or completely blocks the light of the Sun. Lunar eclipse: the Earth is located between the Sun and the Moon, resulting in a shadow on the latter. Different types of eclipses: … Read more

Gamma bursts: the most powerful explosions in the universe

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Les éclats gamma : explosions les plus puissantes de l'univers

IN SHORT Gamma bursts: among the most powerful explosions in the universe. Result from the collapse of massive stars into black holes. Produce jets of radiation with high energy. Violent events: kilonovas and hypernovas. Recent observations thanks to the James Webb telescope. Contribute to the understanding of cosmic formation. Potential danger to Earth, despite the … Read more