The autumnal equinox this year is at 7:03 p.m. Sept. 22. We typically think of the first day of fall as something that happens all day long, but the equinox is the time when the sun crosses the ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Did you know that it’s not always the case ...

Although it may not feel like it, this year’s trip around the sun will include an extra day. In 2024, February gets 29 days instead of 28. Yep, it’s a leap year, also termed a “sidereal” year, which ...

One of the great joys and headaches of writing about science for a Washington, D.C., audience is that there are a lot of brilliant people reading: engineers at NASA, doctors for the National ...

I decided a while ago to make this post an annual BA tradition on Jan. 1, which is a more polite way of saying it’s a repost and I’m sometimes a tad on the lazy side. I’ve punched it up here and there ...