Stories by Craig J. Hogan

Exploding stars seen across immense distances show that the cosmic expansion may be accelerating-a sign that an exotic new form of energy could be driving the universe apart

Exploding stars seen across immense distances show that the cosmic expansion may be accelerating--a sign that the universe may be driven apart by an exotic new form of energy

Nuclei of this hydrogen isotope formed in the first moments of the big bang. Their abundance offers clues to the early evolution of the universe and the nature of cosmic dark matter