AMAZING FACTS 10^19 grains of sand in the Earth 10^21 stars in the observable universe 10^25 atoms in a cup of tea The Earth has roughly 7.5 x 10^18 grains of sand. [Call it 10^19] 1 billion trillion (10^21) stars in the observable universe. 11 septillion atoms in a cup of tea (11 x 10^24) [Call it 10^25] One light-year is 6 trillion miles (6 million million) At 35,000 mph it would take 82,000 years to get to Alpha Centuri. 100 billion (10^11) stars in the average galaxy. 10 billion (10^10) galaxies in observable universe. 1 billion trillion (10^21) stars in the observable universe. A teaspoonful of neutron star would weigh 6 billion tons. A neutron star is the remnants of a massive star that has run out of fuel. Around 32 trillion cells in the human body. Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period - the Cretaceous Extinction), after living on Earth for about 165 million years. LARGEST GENOME (Human is 3 billion base pairs, 725 megabytes) Amobea: 670 billion base pairs (220 times the human genome). ------------------------------------------------------------- BANANAS Background Radiation (annual average) 24,000 - 36,000 bananas CT Scan (abdomen) 80,000 bananas Chest X-ray 1,000 - 2,000 bananas Occupational Exposure Limit (annual) 200,000 bananas Transatlantic Flight (single) 300 - 800 bananas SPEED OF LIGHT 3x10^8 m/s, 300,000 km/s, 186,000 mile/s (299,792,458 m/s) (186,282 miles/s) relativity calc: https://keisan.casio.com/exec/system/1224059993 DIAMETERS Earth dia: 8,000 miles Mars dia: 4,212.3 miles, 38% gravity Moon dia: 2,158.8 miles, 17% gravity ------------------------------------------------------------- LOWEST TEMPERATURE (abs zero is -273.15C) 38 picoKelvin (-273.1499 C) ) (-273.149999999962 C) (38 trillionths of a degree above absolute zero.) QUANTUS Team in Bremen, Germany, in August 2018. Cooled rubidium atoms to the Bose-Einstein Condensate condition using a time-domain matter-wave lens system. This uses magnetic lenses to hold the atoms still. The whole system was encased in a shock-proof cylinder and launched up the Bremen Drop Tower, providing 4.74 seconds of free-fall replicating the conditions of space and sapping a tiny bit more energy from the atoms. https://up2date.uni-bremen.de/en/article/explain-this-professor-the-coldest-place-in-the-universe LOWEST TEMPERATURE IN SPACE Boomerang Nebula 1K (-272.15C) 5,000 light-years away from Earth in the constellation Centaurus. ------------------------------------------------------------- If you remove all the empty space from the atoms in your body, you’d fit inside a sugar cube There are more possible ways to shuffle a deck of cards than there are atoms in the Solar System It takes photons an average of 170,000 years to travel from the sun's core to its surface. -------------------------------------------------------------