The Dark Tetrad, also known as the Dark Quad, is a set of interrelated negative personality features: narcissism, psychopathy, Machiavellianism, and sadism. The term is an expansion of the idea of ...

The Spitfire is the most famous plane of World War Two. Its groundbreaking design and superior specifications gave the British a decisive advantage fighting the Luftwaffe in the Battle of Britain.

Dark energy and dark matter refers to the unseen energy and matter components of the Universe. Dark matter is invisible, non-baryonic matter hypothesized to explain phenomena including ...

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Dec. 20, 2024 — One of the biggest mysteries in science -- dark energy -- doesn't actually exist, according to researchers looking to solve the riddle of how the Universe is expanding.