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The mass of the atom is concentrated in the nucleus (protons and neutrons are about 2000 times as heavy as electrons). Continue reading below for an explanation - The average human has a mass of about 62 kg, or 62,000 grams. That means the average volume of a human is 62,000 cubic centimeters. To get the total volume of the human race, just multiply that by 7.6 billion: 470 trillion cc. Atoms are 99.9999999999% empty space, apart from a few objects called electrons that skim about at a great distance from the nucleus. To give you a sense of how empty an atom is - if the nucleus was the size of a football, the nearest electron would be half a mile (0.8km) away. So, if you could remove 99.9999999999% space from every atom from every single human on earth, it would be around 4700 cubic centimeters. And the volume of a basketball is 5575.28 cubic centimeters. That means the entire human population would easily fit inside a basketball.. . - 💙Join our Space family💙 - - Kindly follow @_space___lover_  for more interesting posts in future. • Double TAP ❤️ for more.... Follow @_space___lover_   to Learn New Amazing Stuff Everyday - - Do you agree with this post? 💯 ❗️Follow us    for more Space Science Facts❗️ @_space___lover_ @_space___lover_ @_space___lover_ @_space___lover_ @_space___lover_ Double tap ❤️ Share More👇 Follow us for more 🌍 -tag:-) #earthpics #galaxies #spacetravel #universes #earthplanet #nasabeyond #spacescience #futures #alieninvasion #iss #blackholes #humanscale #astrogeekz #dangeroustour #artificialintelligence #whatifs #terrifying #beafraid #physicsisfun #theoreticalphysics (at Space) https://www.instagram.com/p/CCmq2eqHXBh/?igshid=15syh8gyxffc3

Starship's size compared to the space shuttle. starship is our future. space shuttle is our past. #space #spacex #spacexlaunch #spacexfalcon9 #spacexrocketlaunch #spacexnews #spacexploration #spacexrocket #spacexdragon #spacex_starship #tesla #teslamodel3 #teslamodels #roadster #teslaautopilot #teslaroadster #teslamotors #teslamodelx #gigafactory #paypal #elonemusk #elonmuskmemes #elonmuskquotes #elonmuskisagenius (at SpaceX) https://www.instagram.com/p/CSEL2RZpnBK/?utm_medium=tumblr

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Blue Beauty

Do you believe in magic? ✨ ⁣ While appearing as a delicate and light veil draped across the sky, this @NASAHubble image reminds us of the power of imagination. What does this look like to you?⁣ ⁣ In reality, it’s a small section of a Cygnus supernova blast wave, located around 2,400 light-years away. The original supernova explosion blasted apart a dying star about 20 times more massive than our Sun between 10,000 and 20,000 years ago. Since then, the remnant has expanded 60 light-years from its center. ⁣ ⁣ Credit: @ESA/Hubble & NASA, W. Blair; acknowledgment: Leo Shatz⁣ ⁣

EXTREMELY RARE 'SPACE BUTTERFLY' CAPTURED BY ESO TELESCOPE The space butterfly is located between 3000 and 6500 light-years away, in the Southern constellation of Vela – otherwise known as The Sails. It has two central stars, which is what gives it its striking, near-symmetrical shape. https://www.instagram.com/p/CDWRhV9Hk3J/?igshid=1bftzyzmtmrai

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How to See Comet NEOWISE

Observers all over the world are hoping to catch a glimpse of Comet NEOWISE before it speeds away into the depths of space, not to be seen again for another 6,800 years. 

For those that are, or will be, tracking Comet NEOWISE there will be a few particularly interesting observing opportunities this week. 

Over the coming days it will become increasingly visible shortly after sunset in the northwest sky.

The object is best viewed using binoculars or a small telescope, but if conditions are optimal, you may be able to see it with the naked eye. If you’re looking in the sky without the help of observation tools, Comet NEOWISE will likely look like a fuzzy star with a bit of a tail. Using binoculars will give viewers a good look at the fuzzy comet and its long, streaky tail. 

Here’s what to do:

Find a spot away from city lights with an unobstructed view of the sky

Just after sunset, look below the Big Dipper in the northwest sky

Each night, the comet will continue rising increasingly higher above the northwestern horizon.

There will be a special bonus for viewers observing comet NEOWISE from the northeast United States near Washington, DC. For several evenings, there will be a brief conjunction as the International Space Station will appear to fly near the comet in the northeast sky. Approximate times and locations of the conjunctions are listed below (the exact time of the conjunction and viewing direction will vary slightly based on where you are in the Washington, DC area):

July 17 :  ~10:56 p.m. EDT  = NEOWISE elevation: ~08°   Space Station elevation: ~14°

July 18 :  ~10:08 p.m. EDT  = NEOWISE elevation: ~13°   Space Station elevation: ~18°

July 19 :  ~10:57 p.m. EDT  = NEOWISE elevation: ~10°   Space Station elevation: ~08°

July 20 :  ~10:09 p.m. EDT  = NEOWISE elevation: ~17°   Space Station elevation: ~07°

It will be a late waning Moon, with the New Moon on July 20, so the viewing conditions should be good as long as the weather cooperates. 

Comet NEOWISE is about 3 miles across and covered in soot left over from its formation near the birth of our solar system 4.6 billion years ago - a typical comet.

Comets are frozen leftovers from the formation of the solar system composed of dust, rock and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet. This material forms a tail that stretches millions of miles.

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