That “more or less” requires leap seconds as well as leap years. Ancient civilizations didn’t need to deal with leap seconds. About 5,000 years ago, Sumerians invented the lunar calendar, unrelated to ...
Thanks to the regular repetition of these moments, since ancient times, the lunar phases have been the basis of the lunisolar calendar. However, it was difficult to establish the exact moment of ...
Once Christmas has passed, the world looks to a new year. Many wonder what the new year will bring while planning their own ways of ringing in 2025. Some will ...
Chang'e-6 basalts show lunar magnetic field strength at 2.8 Ga 2.8 Ga findings challenge previous lunar dynamo models Lunar magnetic field's resurgence attributed to various factors ...