New study supports “cosmological constant”
A new study of one of the universe’s fundamental constants casts doubt on a popular theory of dark energy, scientists say.
Dark energy is the name given to whatever is causing the expansion of the universe to accelerate. One theory predicts that an unchanging entity pervading space called the cosmological constant, originally suggested by Albert Einstein, is behind dark energy. But a popular alternative, called rolling scalar fields, suggests that whatever’s causing dark energy isn’t a constant, but has changed through time…>>>more