Most of us don’t look up to the stars as often as we did when we were children. We take the stars, the moon, the sun, the Milky Way galaxy and the entire universe for granted. Unfortunately, most of us have lost sight of just how spectacular outer space really is. It is remarkably beautiful, incredibly vast and quite mysterious. Let’s take a look at some of the most mind-boggling facts about outer space.
1. When humans venture into outer space, the skin on their feet peels
That might sound disgusting, but it is true. In an environment like space with no gravity, astronauts do not need to use their feet to walk. As a result, the skin on the feet becomes soft and peels right off. Unfortunately, astronauts can’t do laundry in space.
So they wear the same socks for several days in a row. When they remove these socks, they do so with great care since the skin cells from the peeled skin can float all around.
2. Outer space is estimated to contain 300 sextillion stars
We will likely never know how many stars are in outer space. At the current moment, we have attempted to estimate only the number of stars in our galaxy, the Milky Way. Scientists and mathematicians have tried to multiply the number of stars in the Milky Way galaxy by the number of galaxies that we estimate are in the galaxy. The result of that calculation is astronomical and incomprehensible.
It’s unlikely a truly accurate estimation will be made anytime soon or ever. Most scientists cite a study published in Nature that estimates the number of stars in the universe to be 300 sextillion. That’s 3 followed by 23 zeros. Yet this figure is merely an educated guess and triple what was previously thought.
3. Metals stick to one another in outer space
Metals can actually bond together in space, in what’s called ‘cold welding.’ It was discovered that flat polished metal would adhere to other simialr metals when placed in a vacumm environment- such as outer space. This environment, when the protective oxide layer of metal is polished away, can allow the atoms of each metal to bridge the gap between the two objects and bond together. Engineers are keenly aware of this phenomenon when designing space craft equipment.
4. The sun transmits more energy to the Earth in a single hour than Earthlings use in a full year
This is an extraordinary statistic. It shows that human beings have to ramp up their solar energy capabilities as the energy provided by the sun is a massive untapped resource.
Current solar technology only accounts for less than one-tenth of one percent of the energy used by everyone on the planet. The technology is still quite new relative to others and significant land is needed for solar panels that are large enough to absorb ample energy.
It is worth noting that humans are taking advantage of the sun’s amazing amount of energy at an increasing rate. Our solar energy use has increased by 20 percent each year over the past decade and a half.
5. Neutron stars are capable of spinning up to a rate of 600 rotations in one second
NASA scientists believe that neutron stars are one of the likely “end points” of stars that have abnormally high masses. These fast-spinning stars are believed to be born when supernova stars explode and their cores collapse.
The result of this explosion is a neutron star that rotates at an incredible rate of speed. They typically rotate upwards of 60 to 600 times per second in the immediate aftermath of their birth. If the right physics are in place, a recently born neutron star can actually eclipse 600 rotations per second.
6. Outer space is complete silence
Most assume that an area as enormous as outer space would have some noise. Surprisingly, outer space is totally silent. This is due to the fact that sound waves require a medium in order to travel from one point to another. Outer space has no atmosphere to permit such travel. Astronauts can talk to one another and Earth-based personnel thanks to the use of radio waves.
7. The sun accounts for 99 percent of the solar system’s mass
The Earth’s star is the sun. It is immensely dense. The sun is so massive that it takes up 99 percent of the solar system. This is why it has such strong gravity. Scientists have classified our sun as a “G-type main sequence star”. This classification means that the sun fuses around 600,000,000 tons of hydrogen to helium every second.
The sun also transforms around 4,000,000 tons of matter into energy as a result of its hydrogen and helium activity. Since the sun is so large, it will turn into a red giant when it dies. At that point it will completely engulf the Earth. Thankfully, it will take around 5 billion years for that to happen.
8. There are thousands of planets in outer space
While our solar system has 8 planets, the rest of space has thousands. It is highly likely that there are many more planets that we have yet to discover. We have discovered 1,800 new worlds and another 3,000 are still pending confirmation.
Unfortunately, most of the planets that we have discovered are not located in the “goldilocks zone” that permits the existence of life. Almost all of the planets that we’ve discovered are far too hot to sustain life. While many of these planets are smaller than Earth, they are still classified as planets. Some are referred to as extrasolar planets (exo-planets) as they orbit other stars.