Since wildfires in 2007 ravaged parts of San Diego County, San Diego Gas & Electric has made a concerted effort to reduce the ...

Roughly 400,000 years after the Big Bang, the universe cooled just enough to allow photons to escape from the primordial ...

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

Researchers mapped Earth’s ionosphere, part of the upper atmosphere, using signal data from 40 million phones – a method that ...

If you’ve ever followed a navigation app only to have it drift off course, the culprit responsible for the mix-up may be ...