The next full Moon is the Hunter's Moon, which will occur on Thursday, Oct. 17. That evening, the Moon will rise above the ...

Rosh Hashanah is one of Judaism's holiest days, a two-day celebration marking the start of the Jewish new year, will happen a ...

In other contexts, such as the making of liturgical calendars among people of the Book, the period is known as the Metonic cycle. The Saros cycle also shows up as a dial on the Antikythera ...

Every few years, the Jewish calendar adds a leap month, which is determined by a 19-year rotation called the Metonic cycle. This keeps the high holidays of Rosh Hashanah and Yom Kippur aligned ...

To keep its holidays within the seasons associated with them, every few years the Jewish calendar adds a leap month, which is determined by a 19-year rotation called the Metonic cycle. It keeps ...

A life cycle is the journey of a living thing from beginning to end. Some species produce offspring that look similar to them, like us humans. But the young of some other species are very ...

The study of the cell cycle focuses on mechanisms that regulate the timing and frequency of DNA duplication and cell division. As a biological concept, the cell cycle is defined as the period ...

Imagine going back thousands of years and showing off the cool astronomical functions of your smartphone. It can tell the ...

(Photo by Cole Burston/Getty Images) The relevant cycles being counted here are oscillations of light itself; actually, fractions of that cycle, in most cases, because the light itself is ...

Water never leaves the Earth and its atmosphere. It simply moves around in what is called the water cycle. The water cycle is the continuous journey of water from oceans and lakes, to clouds ...

The carbon cycle is the biogeochemical cycle focused on carbon and how it is sequestered in and moves between different reservoirs in the Earth system. A re-evaluation of global land-to-ocean ...

Lael Wilcox took 108 days, 12 hours and 12 minutes to cycle 29,169km (18,125 miles), starting and ending in Chicago. She beat the 2018 record held by Jenny Graham, from Scotland, whose journey ...