Cosmology

The ambitious Laser Interferometer Space Antenna, a casualty of tightening budgets, could rise again

The current census of middleweight black holes is incomplete in many ways. Additional studies will push astrophysicists' understanding of and search for middleweights in new directions

Giant low-frequency sensor system on track to probe the birth of the first stars.

Scientists hope that by plotting out the distribution of dark matter throughout space, they will come closer to understanding what it is

Result puts limit on how 'lumpy' space-time can be.

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