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Earth may have at least 6 'minimoons' at any given time. Where do they come from?Half a dozen fragments of the moon may briefly orbit Earth at any given time, before moving on to circle the sun, new research suggests.
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Our moon may have once been as hellish as Jupiter's super volcanic moon IoThe moon spent a few million years as a volcanic wasteland, covered with ongoing eruptions that spewed from mountains and even from the ground itself.
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A whole 'population' of minimoons may be lurking near Earth, researchers sayThe discovery of 2024 PT5, a small, rocky body dubbed a "minimoon" during its discovery last year, hints at a hidden population of lunar fragments traveling near Earth.
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What is fission?Fission is the process by which an atom splits into two, generating two smaller atoms and a tremendous amount of energy. Fission powers nuclear bombs and power plants.
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What is nuclear fusion?Nuclear fusion is the merging of two light atomic nuclei into one heavier one. If it can be harnessed on Earth, it could generate clean, limitless energy.
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Autumn: The cooling-off seasonReference Discover more about the season where the leaves turn red and the temperature drops.
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Summer: The warmest seasonReference Everything you ever wanted to know about summer, the hottest season of the year.
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Spring: The season of new beginningsReference Springtime brings warmer temperatures and a rebirth as nature reawakens.
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Winter: The coldest seasonReference Winter, the coldest season of the year, comes between autumn and spring. It is associated with plunging temperatures and icy weather, but its impact and timing change according to location.
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The four seasons of the year: spring, summer, autumn (fall) and winterReference Seasons are periods of the year with distinct weather conditions and day lengths. Earth's four seasons are spring, summer, autumn (fall) and winter.
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Venus, once billed as Earth's twin, is a hothouse (and a tantalizing target in the search for life)As Earth's twin, Venus offers much in the search for life and habitable worlds.
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Death from above? Fireball may have destroyed ancient Syrian villageAn ancient Syrian village was destroyed by a fireball from the sky, scientists suspect.
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The sun looks like caramel corn in highest-resolution image ever of our starHawaii's Inouye Solar Telescope has released its first detailed image of the sun.
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Nature Could Have Created Oddball 'Oumuamua, Not AliensThe debate about 'Oumuamua's nature and origin continues.
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Super-Earth Smackdowns May Explain Diverse WorldsCrashing a giant space rock into a young planet can strip off some or all of its atmosphere, creating a wealth of different types of worlds.
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Queen's Brian May Releases 'New Horizons' Single to Celebrate Epic FlybyOnly moments before New Horizons flew by the most distant solar system object ever visited, astrophysicist and Queen guitarist Brian May released his new single based on the mission.
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We Could Find Aliens by Spotting Their SatellitesAlien civilizations with technology levels similar to that of Earth could be visible with current instruments, if they've hoisted enough satellites into orbit, a new study suggests.
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Why Is Jupiter's Great Spot Red?What gives Jupiter's Great Red Spot its distinct color? A new study shows why the answer may not be easy to find.
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Teach Your Kids About the Super Blue Blood Moon of Jan. 31 with These ActivitiesGet children and teens ready for the lunar eclipse (and supermoon!) with these fun STEM activities.
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Origin of Universe's Most Energetic Particles Possibly FoundA new theory connects three of the most energetic particles in the universe.
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200-Year-Old Journal Reveals Rare American Sunspot RecordsA journal of a Maine reverend reveals detailed sunspot observations during the 1816 "year without a summer."
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World Trade Center: Ground Zero on September 11, 2001The twin towers dominated the New York skyline for decades.
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What To Do If Your Solar Eclipse Glasses Won't Arrive in TimeWhat do you do if your eclipse glasses haven't arrived, or have been recalled? Here are some other options for safely observing the eclipse.
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Solar Eclipse Day Craziness Could Resemble the Zombie Apocalypse — Are You Ready?Only one month left until the Great American Eclipse passes across the continental United States.
