During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence ...

The autumn equinox, which comes around every September for the Northern Hemisphere, marks the official astronomical start of ...

Note: Moon phases in the calendar vary in size due to the distance from Earth and are shown at 0h Universal Time. Credit: Astronomy: Roen Kelly The moonrise and moonset schedule this week The ...

Meteorological autumn began on Sept. 1, but astronomical autumn, also known as calendar autumn or the autumnal equinox, is on ...

The Mayans were one of the most advanced ancient civilizations in terms of scientific advancements. Their crown jewel was the ...

More about Katrina Miller Never miss an eclipse, a meteor shower, a rocket launch or any other 2024 event that’s out of this world with our space and astronomy calendar. Astronomers have found ...

The autumnal equinox heralds the arrival of fall in the northern hemisphere, and it's just around the corner. Here's what to ...

But some events that might be described as "astronomically awesome" if not fully astronomical are also known for adding ...

Sep. 13, 2024 — Physicists propose that a mysterious force known as early dark energy could solve two of the biggest puzzles in cosmology and fill in some major gaps in our understanding of how ...

The fall season officially begins on the calendar this Sunday, with the autumn equinox. For those of us in the northern ...

Though the autumnal equinox is Sunday, marking the astronomical start of fall, Chicago-area residents wouldn't know without looking at the calendar, with an unseasonably warm September continuing to ...