Exceptionally massive and bright, the earliest stars changed the course of Cosmic history
Astronomers are on the verge of explaining the enigmatic variety of galaxies
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
The Long-Derided Cosmological Constant-a Contrivance of Albert Einstein's-- may explain changes in the expansion rate of the universe
The universe has recently been commandeered by an invisible energy field, which is causing its expansion to accelerate outward Is it all over but the shouting?
Billions of years ago the universe was too hot for life to exist. Countless aeons from now, it will become so cold and empty that life, no matter how ingenious, will perish.
Conventional wisdom says the universe is infinite. But it could be finite, merely giving the illusion of infinity
The visible universe could lie on a membrane floating within a higher-dimensional space
The Microwave Anisotropy Probe will give cosmologists a much sharper picture of the early universe
Scientists may soon glimpse the universe's beginnings by studying the subtle ripples made by gravitational waves
Physicists have spent eight years and 365 million building a radically new kind of observatory to detect gravitational waves. but will it work? a trial run put it to the test
If the new cosmology fails, what's the backup plan?