10 Interesting Space Facts That’ll Blow Your Mind :
1. Mercury & Venus are the only 2 planets in our solar system that have no moons.
In total, there are 176 confirmed moons that orbit the planets in our solar system, with some of them being bigger than Mercury itself!
2. If a star passes too close to a black hole, it can be torn apart.
For 20 years, a team of astronomers observed a star at the center of our galaxy orbiting a black hole.
The star has now got close enough to the black hole for “gravitational redshift” to occur which is where the star’s light loses energy as the black hole’s gravity intensified.
3. Enceladus, one of Saturn’s smaller moons, reflects 90% of the Sun’s light.
Because Enceladus’ icy surface reflects sunlight rather than absorbing it, temperatures reach as low as -394° Fahrenheit (-201° Celsius).
4.The Whirlpool Galaxy (M51) was the first celestial object identified as being spiral.
The grand, spiraling arms of the Whirlpool Galaxy are made up of long lanes of stars and gas, sprinkled with lots of space dust.
These arms act as star formation factories, compressing hydrogen gas and creating clusters of new stars.
5. The Martian day is 24 hours 39 minutes and 35 seconds long.
So you’d therefore assume there are less days in a year on Mars than Earth, right?
Because Mars orbits the sun slower than the Earth, there are actually 687 Martian days in a Martian year!
6.Pluto is smaller than the United States.
If you were to walk around the equator of Pluto it would be the same distance as walking from London to Denver (well, give or take 56 miles).
8. Neutron stars can spin at a rate of 600 rotations per secondgh as of yet we have found none.
A white hole is a hypothetical region of space-time which can’t be entered from the outside, although matter and light can escape from within.
Basically, it’s the reverse of a black hole.
8.Neutron stars can spin at a rate of 600 rotations per second
Neutron stars are one of the possible evolutionary end-points of high mass stars. They're born in a core-collapse supernova star explosion and subsequently rotate extremely rapidly as a consequence of their physics. Neutron stars can rotate up to 60 times per second after born. Under special circumstances, this rate can increase to more than 600 times per second.
9. 99 percent of our solar system's mass is the sun
Our star, the sun, is so dense that it accounts for a whopping 99 percent of the mass of our entire solar system. That's what allows it to dominate all of the planets gravitationally.
Technically, our sun is a "G-type main-sequence star" which means that every second, it fuses approximately 600 million tons of hydrogen to helium. It also converts about 4 million tons of matter to energy as a byproduct.
When the sun dies, it will become a red giant and envelop the Earth and everything on it. But don't worry: That won't happen for another 5 billion years.
10. If two pieces of the same type of metal touch in space, they will bond and be
permanently stuck together
This amazing effect is called cold welding. It happens because the atoms of the individual pieces of metal have no way of knowing that they are different pieces of metal, so the lumps join together.
This wouldn't happen on Earth because there is air and water separating the pieces. The effect has a lot of implication for spacecraft construction and the future of metal-based construction in vacuums.