Astrophysics

NASA's long-term vision, released by the agency's astrophysics division, restates its broad and popular themes for scientists to pursue including "Are We Alone?" and "How Did We Get Here?"

Astronomers may have discovered a moon orbiting an alien planet, but the signal is far from definitive

A carbon threshold breached, commitments to brain science made, mystery neutrinos found and human evolution revised—these and other events highlight the year in science and technology as picked by the editors of Scientific American

Physicists prefer Roman-era lead ingots to recently mined metal for shielding particle experiments, but archaeologists want them preserved

The existence of the Higgs boson particle was confirmed, a strong case for human-caused climate change was released and scientists analyzed the oldest-known human DNA

If different wavelengths of light experience spacetime differently, the big bang may never have happened

Agency restructuring will postpone a major grants program for one year

Stars racing out of the galaxy could offer clues about dark matter

Physicists line up to crack a long-standing particle puzzle

NASA is investigating new roles for the former planet-hunting observatory

Astrophysicists are gearing up to haul in neutrinos from an exploding star in our own galaxy in hopes that the subatomic particles will provide unparalleled insights into the physics of star death

X-ray and radio observations offer the best evidence yet that, as long suspected, high-energy particles stream from the heart of our galaxy