Jem_Facts_ on Instagram: "When astronomers detected this flash, they were essentially observing a Cretaceous period event — the light from the stellar explosion had been traveling through space for over 100 million years. This isn't a metaphor: telescopes enable us to peer into the Universe's past thanks to the finite speed of light. Every observation of distant galaxies represents archaeology in action. Even more astonishing: according to general relativity, warping spacetime could theoreticall

Jem_Facts_ on Instagram: "Approximately 66 million years ago, Earth experienced a collision with an asteroid of colossal proportions. Its impact in the region of the modern Yucatán Peninsula triggered a series of global cataclysms. The instantaneous shock, incinerating heat from the superheated atmosphere, and the years-long "impact winter" caused by atmospheric particulates rendered the planet uninhabitable for giant reptiles. This event, known as the Cretaceous–Paleogene extinction event, fore