Astrophysics News


Astronomers Observe Evolution of a Black Hole as it Wolfs Down Stellar Material

Halo of highly energized electrons around the black hole contracts dramatically during feeding frenzy.


X-ray Pulse Detected Near Event Horizon as Black Hole Devours Star

Pulse pattern suggests distant black hole must be spinning at least at 50 percent the speed of light.​


TESS Discovers Its Third New Planet, With Longest Orbit Yet

Measurements indicate a dense, gaseous, “sub-Neptune” world, three times the size of Earth.​


NASA's TESS Rounds Up its First Planets, Snares Far-flung Supernovae

The new discoveries show that TESS is delivering on its goal of discovering planets around nearby bright stars.​


LIGO and Virgo Announce Four New Detections

The observatories are also releasing their first catalog of gravitational-wave events.​


Gravitational Waves Could Soon Provide Measure of Universe’s Expansion

UChicago study: New LIGO readings could improve disputed measurement within 5-10 years​


Missing Gamma-Ray Blobs Shed New Light on Dark Matter, Cosmic Magnetism

Astrophysicists use a catalog of extended gamma-ray sources spotted by Fermi spacecraft to home in on mysterious properties of deep space.​​


Caltech Professor Hirosi Ooguri Appointed New Director of Kavli IPMU

Ooguri began serving as the Director on October 15, assuming leadership of one of Japan’s most renowned research institutions.​


Luminous Blue Variable Star

New, three-dimensional simulations reveal the inner workings of one of the universe’s most mysterious stars.​


Cosmological Constraints from the First-Year Subaru Hyper Suprime-Cam Survey

The team has made and analyzed the deepest wide-field map of the 3D distribution of matter in the Universe.​