A belated happy autumnal equinox to you! The white-water HPC-AI world produced major news over the past week, including: ...

Later on as cloud cover diminishes, temperatures will still be on the cooler side. Highs on Monday will be around the low to ...

Fall will start on Sunday, Sept. 22, at 5:43 a.m. Arizona time. In order to make the start of autumn official, the tilt of ...

The sunspot AR3835 erupted on Sunday (Sept. 22) during Earth's equinox when a glancing blow can cause a geomagnetic storm.

While the northern states are known for peak foliage during fall, there are places in Florida where the red maples live up to ...

Tuesday is anticipated to be the warmest day of the week with western interior temperatures warming into the 70s under plenty ...

Former NASA astronaut and Columbia University professor Mike Massimino joins TODAY to share his unique perspective to explain ...

Another thing that happens around the Autumnal Equinox is that the North Pole experiences its last sunset and will be in darkness until the Spring Equinox in March. It’s the opposite for the South ...

The event was the annual equinox sunrise ceremony at Cahokia Mounds National Historic site’s “Woodhenge,” a massive sundial ...

Autumn brings longer, cooler and clearer nights. Summer’s bright constellations and dense star clouds of the Milky Way give ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

While the autumn equinox technically marks the end of summer, there’s no rush to break out the winter coats. The abnormally ...