In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

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

The camera was protected in a steel case, which allowed it to survive when the missile crashed back down to Earth: 2.This ...

The camera was protected in a steel case, which allowed it to survive when the missile crashed back down to Earth: 2.This ...

When the Eaton Fire flared up Jan. 9, flames climbed to the summit of Mount Wilson northeast of LA. What happened next was a fire prevention success.

Shapley argued the opposite. Hubble enters the fray Edwin Hubble joined the Mount Wilson Observatory team in California in ...

Many of L.A.’s signature places to get outdoors have been wiped out by the wildfires.

Edwin Hubble's discovery of the expanding universe transformed cosmology, revealing countless galaxies and laying the ...

For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the Andromeda galaxy. Don't go looking for it -- the flickering star is 2.2 million ...

The key NASA center remains under a mandatory evacuation order, but officials say both it and Mount Wilson are protected for ...

Will Rogers’ ranch house and other historic buildings located on the 186-acre Will Rogers State Park were destroyed by the ...

Firefighters continue working to contain the Eaton Fire that has burned Altadena and northern Pasadena. Here’s how the blaze ...