Étiquette : Space
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The Rechercher for Extraterrestrial Signals Explained
The question of whether we are alone in the universe is among the oldest and most profound that humanity has ever asked. In modern times, this question has become the subject of serious scientific inquiry, including the systematic search for signals that might indicate the existence of technological civilisations elsewhere in the cosmos. Unlike the…
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Dark Matter and Dark Energy: The Universe’s Greatest Unsolved Puzzle
Look up at the night sky and you see stars, planets, nebulae, and galaxies. Everything visible, everything that emits or reflects light, every atom of ordinary matter in the entire observable universe accounts for just 5% of what actually exists. The remaining 95% is composed of two mysterious substances that scientists have named dark matter…