A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

Edwin Hubble was young and ambitious. At the of age 30, he arrived at Mount Wilson Observatory in Southern California just in time to use the new Hooker 100-inch telescope, at the time the largest ...

The destruction in parts of Altadena, a few miles to the west of Sierra Madre, and Pacific Palisades, which had burned in a ...

Firefighters continue to fight fires in Los Angeles as strong winds returned to the region, spurring on a new fire near San Diego.

Firefighting efforts continue on the Eaton Fire that has burned over 14,000 acres and killed at least 17 people as the area ...

President Donald Trump and Vice President JD Vance were sworn into office today amid heightened security measures in ...

In Eaton Canyon, a beloved hiking area, more than two dozen trails appear to have burned, including those leading to Millard ...

Wilson. Other popular areas, including the Gabrielino Trail and the Mt. Wilson Observatory, were spared. An accounting of the damage of the Eaton fire is still ongoing. Since starting in early ...