Cosmology

A new biography of Stephen Hawking by long-time acquaintance Kitty Ferguson explores the famous physicist's life and theories in honor of his 70th birthday

Orbital debris hits Earth daily, but NASA says not to worry

Tipping the scales at less than about a million suns in mass, middleweight black holes may hold clues to how their much larger siblings, and galaxies, first formed

The Milky Way seems to have too few galactic hangers-on, except when it comes to the big ones. What gives?

The supermassive black hole at our galaxy's center may be about to shred and consume a cloud of gas and dust the size of a planet

The long-sought Higgs boson is tied to the leading theory of how quarks, electrons and other particles get their mass

Thomas LeCompte of Argonne National Lab was the physics coordinator for the ATLAS experiment at the Large Hadron Collider. He talks about the instrument and its future, as we await the December 13th announcement as to whether the LHC has found the Higgs particle

Rumors are flying about a December 13 update on the search for the long-sought Higgs boson at Europe's Large Hadron Collider

The discovery, of objects 9.7 billion solar masses large or more, suggests there is still much to learn about how monster black holes grow

Could the cosmos have a point?

How a spacecraft propelled by ion drives could deliver humanity deeper into space than ever before. Read more in our special report on deep-space exploration

Physicist Brian Greene, host of the NOVA series The Fabric of the Cosmos, addresses the question of faster-than-light neutrinos at a Q&A session after the debut of the PBS series