Space: 30 Amazing Unknown Facts About It

Our space is vast, vacuum and endless. It is so immense that our solar system is just a part of Milky Way galaxy; where as total number of galaxies is still not correctly figured out. Only 5% of the universe can be seen from Earth and the rest is dark energy and dark matter. So, scientists are researching for decades and some of the information has been discovered yet. A lot is left to know about our surrounding universe. 

Let’s come and know about some of the amazing facts of space.


Neutron stars present in the universe are the evolution and last state of high mass stars. They generally born due to supernova explosions and these stars spin very fast. In general they rotate 60 times per second and in special cases the rate can increase as much as 600 times per second. 

2. Our space is completely silent. As sound needs a medium to travel but space is totally vacuum. Hence the planets are plenty noisy but we can’t hear even if a nuclear explosion happens out of our planet atmosphere. 


We don’t have any idea that how much stars are there in the universe. It has been said that there are more stars than the total amount of sand grains on planet Earth, which is estimated 70 postillion (70000 million million million) as per Australian National University. 


Our Moon will preserve the Apollo astronauts’ footprints, rover prints for at least 100 million years due to the absence of atmosphere.  

5. Earth receives much more energy from Sun per hour than it uses in a whole year. 


If two pieces of same metal touch in space, they will permanently stuck together. This phenomenon known as cold welding. Which has a lot of implication in spacecraft construction or metal based construction in vacuum. 


Ceres is the largest asteroid found in the asteroid belt between Mars and Jupiter. It is almost 600 miles in diameter, which is equal to the land area of Argentina. And this is why it is also known as a dwarf planet. 

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One day in Venus takes almost the same time of 243 Earth days due to its slow rotation but surprisingly Venus orbits the Sun in 226 Earth days and the Sun rises in every 117 Earth days. 

9. Venus rotates clockwise in orbiting the Sun hence, Sun rises in the west and sets in the east on Venus.


Venus is not the closest planet to Sun but it is the hottest planet in our solar system, where the surface temperature is around 450 degree Celsius. 


Mars has the biggest volcano in the solar system known as Olympus Mons. It stretches over 374 miles and as high as 16 miles, means as big as Arizona and 3 times higher than Mount Everest. 


Mars also has the longest valley in the solar system, Valles Marineris. Stretching over 2500 miles, which is more than 10 times bigger of the Grand Canyon.

13. Spacecrafts from Earth visited every planet in our solar system – Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, even Pluto and Ceres. NASA’s twin Voyager spacecraft launched in 1977 and still transmitting information from beyond the solar system.


Enceladus  is one of the Saturn’s moon where temperature reaches -201 degree Celsius and the surface is totally covered by ice. So it reflects 90% of Sun’s light. 


Our Milky Way galaxy is approximately 106000 light years wide. It means if you travel by a modern spacecraft, it would take almost 4.5 million years to reach to the center of our galaxy.


Uranus is 97.77 decrease tilted on its axis. That’s why a day lasts only 17 hours and 15 minutes. Whereas a day on Pluto lasts for 153.6 hours. 

Also Read: The Evolution And History of Submarine

17. Scientists have mapped 100% of the surface of Mars and Moon but only 5% mapping has been done of our own Earth’s oceans floor. 


The ISS (International Space Station) orbits Earth in every 92 minutes. Which means speed of around 5 miles per second. 


In 2016, scientists detected a radio signal coming from 5 billion light years away. In simple, when the signal started its journey Earth did not even exist. As our solar system is 4.5 billion years old. 

20. In space, due to lack of gravity astronauts can grow 2 inch. However the extra height is lost when the astronauts re-enter Earth’s atmosphere. 


Saturn is the second largest planet in our solar system but it is the only planet that can float in water. 


Mars has less than 1% of Earth’s atmosphere and due to the atmospheric character light’s reflection and refraction are different. So the sunset appears blue on Mars. 

23. ”Astronaut” is a word meaning ”Star sailor” which is derived from the Greek words ”Astron” meaning ”Star” and ”Nautes” means ”Sailor”.


Jupiter is known as the dumping ground of our solar system. As a large percentage of asteroids are pulled in by Jupiter’s gravity. 

25. There are 5 dwarf planets in our solar system. Pluto, Eris, Haumea, Makemake and Ceres. 


55 Cancri is half the radius of Earth and 8 times less in mass also. But the surface of this planet is made of graphite and diamonds. 

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Buzz Lightyear from the movie Toy story has actually been sent in outer space and spent 15 months on the International Space Station. 


The great red spot on Jupiter is an anti cyclonic storm which rotates in every 6 days. In last few years the red spot is shrinking. 


A full NASA space suit costs 12 million dollar. And the 70% of the cost is off backpack and control module. 

30. Every planet in our solar system is named after Greek or Roman Gods except Earth. And no historical data has been found yet that who actually name this planet Earth. 

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