Year

A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars.

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13,900-Year-Old Projectile Point Found in Washington

Sensational 500-Million-Year-Old Fossil Found In India Turns Out To Be A Case Of Mistaken Identity

Enter the hunter satellites preparing for space war: Startup plans to launch prototype pursuit satellites on a SpaceX flight later this year

Prehistoric workshop loaded with hundreds of 1.2 million-year-old obsidian tools found in Africa | The Stone Age tool manufacturing workshop produced standardized handaxes, showing our earliest ancestors were much more forward thinking than we might have thought.

Vikings brought animals to England as early as the year 873

319-million-year-old fish preserves the earliest fossilized brain of a backboned animal

515-Million-Year-Old Fossils Shed Light on Evolution of Annelid Worms

Researchers Disprove 30-Year-Old Climate Paradigm

Exoplanets dance around distant star in stunning 12-year timelapse (video)

Watch This 12-Year Timelapse of Exoplanets Orbiting Their Star

Pollen from grasses and trees can cause symptoms such as coughing or wheezing in babies as early as the first year of life, Basel researchers have shown for the first time. This connection was previously only known in older children and adults.

Students Lost One-Third of a School Year to Pandemic, Study Finds

40-Year Study Finds Weight-Loss Surgery Extending Life Spans

NASA's Geotail spacecraft ends 30-year mission studying Earth's magnetosphere

220-Million-Year-Old Fossils Identified as Oldest Known Caecilian

Hunga Tonga undersea volcano eruption likely to make ozone hole larger in coming years

Asteroid mining startup AstroForge will test its metal refinery tech in space this year

Europe's JUICE spacecraft is all ready to embark on an eight-year odyssey through the Solar System to find out whether the oceans hidden under the surface of Jupiter's icy moons have the potential to host extraterrestrial life

New Scans Reveal 2,300-Year-Old Mummy Boy and His Gold Treasures | The golden tokens and footwear were intended to ease the body’s transition into the afterlife.

Sword Mistaken For Replica Is Actually An Ancient 3,000-Year-Old Weapon