12,740 km is the diameter of Earth. The surface area of about 510 million square km. About 8 billion people living on this surface, now jump to 400 km above the surface of the earth. this is the distance where the space station revolves around our planet. The Earth seems to be huge for us from here!
There are a total of Eight Planets. Alright, Nine! If you insist on adding pluto. Think about 1 star having 8 planets revolving around it. That’s our solar system. Now blow your mind by searching for the possible number of stars in our Galaxy, the Milky-way. 25,000+ crores of stars. That’s around 200,000 crore Planets if we assume 8 planets revolving around each of those stars. We haven’t even been outside our galaxy yet.
The closest star to our planet other than the Sun? Proxima Centauri. 4.2 light-years from earth. (1 light-year = 9.46 trillion km) this is just one star amongst the 25,000+ crore stars spread across our Milky-way Galaxy which is about 105,700 light-years in diameter. There are around 200 billion such galaxies in the observable universe.
What about outside the Observable Universe? (Warning: you might lose sleep)
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