Cosmology

The bonanza in spotting Pluto's peers nears its end

Small galaxies orbiting the Milky Way may have arrived via dark matter superhighways stretching across the universe

Journalist Lee Billings Talks about his book Five Billion Years of Solitude: The Search For Life Among the Stars, Part 2 of 2

Journalist Lee Billings Talks about his book Five Billion Years of Solitude: The Search For Life Among the Stars, Part 1 of 2

The famous physicist explored the idea of a steady-state universe in 1931

With a new approach that treats the universe as a fluid, cosmologists plan to tease out the fine details of the big bang from its behavior and evolution

The Hubble Telescope's new set of Frontier Fields images includes a galaxy some 13-billion light-years away, which makes it a candidate for the most distant object ever seen. Clara Moskowitz reports 

A disagreement between observations of galaxy clusters and the cosmic background radiation could be explained by the existence of a fourth type of neutrino
 

A puzzle from the big bang's echo is solved using the technique of gravitational lensing

Scientific American technology editor Seth Fletcher talks about the recent Consumer Electronics Show and astronomy editor Clara Moskowitz discusses last month's American Astronomical Society conference  

 

The notion of an "event horizon," from which nothing can escape, is incompatible with quantum theory, Hawking says

Able to detect light from the first stars just 380,000 years after the big bang, the Square Kilometer Array will be the world's biggest radio observatory and promises to spur science and economic development in Africa