The more we learn about the universe, the human body, animals, physics, and the microscopic world around us, the more obvious it becomes that some of the coolest facts sound completely made up. A tiny organism can survive conditions that would destroy most life, time itself can behave differently depending on how fast you are moving, and something happening inside your own body can be far more complicated than it seems. For anyone who enjoys collecting obscure facts and falling down scientific rabbit holes, there is no shortage of material. These are the kinds of details that make you stop, think about them twice, and immediately want to learn more.National GeographicA Day on Venus Is Longer Than Its YearVenus takes about 243 Earth days to rotate once on its axis, while it completes an orbit around the Sun in roughly 225 Earth days.cnx.cmd.push(function() {cnx({playerId: "106e33c0-3911-473c-b599-b1426db57530",}).render("0270c398a82f44f49c23c16122516796");});WikipediaThere Are More Trees on Earth Than Stars in the Milky WayScientists estimate that Earth has around 3 trillion trees, while the Milky Way is thought to contain roughly 100 to 400 billion stars.BritannicaOctopuses Have Three HeartsTwo hearts pump blood toward the gills, while the third circulates oxygenated blood throughout the rest of the body.Revere HealthWater Can Exist in Three States at OnceUnder specific pressure and temperature conditions called the triple point, water can simultaneously exist as a solid, liquid, and gas.National GeographicBananas Are Slightly RadioactiveBananas contain potassium, including the naturally occurring radioactive isotope potassium 40, although the amount is far too small to pose a meaningful health risk.VoxA Cloud Can Weigh Hundreds of TonsA typical cumulus cloud can contain enormous amounts of water, with estimates putting its total mass at hundreds of thousands of kilograms despite appearing almost weightless.WikipediaLightning Is Hotter Than the Sun’s SurfaceThe air inside a lightning channel can reach temperatures of roughly 30,000 kelvin, several times hotter than the Sun’s visible surface.Promega ConnectionsYour Bones Are Surprisingly StrongBone is a composite material made from collagen and mineral crystals, giving it an impressive combination of strength and relative lightness.NBC NewsSome Tardigrades Can Survive Exposure to SpaceThese microscopic animals have survived exposure to the vacuum and radiation of space under experimental conditions by entering a dehydrated state called a tun.Let´s Talk ScienceSound Cannot Travel Through Empty SpaceSound waves require a medium such as air, water, or a solid material to propagate, which means the vacuum of space is silent.WhatIfShowA Spoonful of Neutron Star Material Would Be Incredibly MassiveNeutron stars pack extraordinary amounts of matter into tiny volumes, producing densities vastly greater than anything found naturally on Earth.WikipediaSharks Are Older Than TreesThe earliest shark like animals appeared more than 400 million years ago, while the first trees appeared later in Earth’s history.American Museum of Natural HistoryYour Body Contains Trillions of MicroorganismsThe human body is home to vast communities of bacteria, archaea, fungi, and other microorganisms, particularly in the digestive system.The Philosophers MagazineTime Actually Passes Slightly Differently at Different AltitudesAccording to Einstein’s theory of relativity, clocks closer to a massive object experience slightly more gravitational time dilation than clocks farther away.Life ExtensionThere Are More Possible Chess Games Than Atoms in the Observable UniverseThe number of possible chess game sequences is extraordinarily large, often estimated around 10⁴³, while estimates for the number of atoms in the observable universe are around 10⁸⁰, so the popular comparison is actually reversed: there are vastly more atoms than possible chess games.The post 15 Science Facts for the Biggest Geeks Among Us appeared first on Den of Geek.