The 2019 HEAD Mid-Career Prize recognizes Ramirez-Ruiz "for his key contributions to our physical understanding of transient phenomena involving compact objects."

Major data release from Sloan Digital Sky Survey includes galaxy maps, new data access and visualization tools, and a huge 'stellar library'.

Saturn's ring system acts as a sensitive seismograph, enabling scientists to measure the giant planet's vibrations and determine its rotation rate.

The Royal Astronomical Society (RAS) has awarded the 2019 Harold Jeffreys Lectureship to Francis Nimmo, professor of Earth and planetary science at UC Santa Cruz.

Arnold Klemola, a long-time staff researcher at UC Observatories, passed away on January 5, 2019. He was 87.

The prototype Schwarzschild-Couder Telescope (pSCT) is designed as a pathfinder telescope for the Cherenkov Telescope Array.

Kepler's observations of the supernova known as SN 2018oh showed an unexpected fast rise in brightness that may be an important clue to understanding the progenitors of Type Ia supernovae, which cosmologists use to study the expansion of the universe and dark energy.

Astronomers may have finally uncovered the long-sought progenitor to a unique type of exploding star called a type Ic supernova.

Measurements from high-precision instruments, including Keck's HIRES and Lick's Automated Planet Finder, reveal a cold super-Earth around Barnard’s star.

In recognition of their efforts and Hispanic Heritage Month, the National Science Foundation profiled eight leaders in their fields.