First fact about DNA

1 1. There is enough DNA in an average person’s body to stretch from the sun to Pluto and back — 17 times
2 2. The average human body carries ten times more bacterial cells than human cells
3 3. It can take a photon 40,000 years to travel from the core of the sun to its surface, but only 8 minutes to travel the rest of the way to Earth
4 4. At over 2000 kilometers long, The Great Barrier Reef is the largest living structure on Earth
5 5. There are 8 times as many atoms in a teaspoonful of water as there are teaspoonfuls of water in the Atlantic ocean
6 6. The average person walks the equivalent of five times around the world in a lifetime
7 7. When Helium is cooled to almost absolute zero (-460°F or -273°C), the lowest temperature possible, it becomes a liquid with surprising properties: it flows against gravity and will start running up and over the lip of a glass container!
8 8. If Betelgeuse would explode transiting from the red supergiant stage to supernova then our sky would light continuously for two months. It can happen anytime, within a couple of thousand years, tomorrow or even now
9 9. An individual blood cell takes about 60 seconds to make a complete circuit of the body
10 10. The known universe is made up of 50,000,000,000 galaxies. There are between 100,000,000,000 and 1,000,000,000,000 stars in a normal galaxy. In the Milky Way alone there might be as many 100 billion Earth-like planets. Still think you’re alone?
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6 POINTS ON REDDIT hy aren’t there that many people into science? Personally, I believe it has something to do with how it’s being communicated and, not least, how it’s being taught in school
With this in mind, here are just ten amazing things that I’ve come to learn thanks to the progress of science. It’s this sort of knowledge that’s inspired me to learn more every day and it’s my deepest hope that something similar might happen to you as well. This list is much too short though, so I’m counting on you to keep it growing by adding your own science facts in the comments section.

1. There is enough DNA in an average person’s body to stretch from the sun to Pluto and back — 17 times
   The human genome , the genetic code in each human cell, contains 23 DNA molecules each containing from 500 thousand to 2.5 million nucleotide pairs. DNA molecules of this size are 1.7 to 8.5 cm long when uncoiled, or about 5 cm on average. There are about 37 trillion cells in the human body and if you’d uncoil all of the DNA encased in each cell and put them end to end, then these would sum to a total length of 2×10 meters or enough for 17 Pluto roundtrips (1.2×10 meters/Pluto roundtrip).