Dark energy: why is the expansion of the universe accelerating?
The enigma of {{strong|dark energy}} has fascinated astrophysicists for several decades. First observed with the discovery of a {{strong|cosmic acceleration}} in the expansion of {{strong|the universe}} at the end of the 20th century, this mysterious force challenges the classical knowledge of modern {{strong|cosmology}}. Constituting about 70% of the total content of the universe, as revealed … Read more