SO bored that I just made a blog to kill time because time is all I've got right now *sigh. Space is awesome. So many interesting stuff about space that I can make a whole blog about it. I've been interested in Space since the first time I learned about its existence, that when I was about 4th or 5th grader I think. As I grew up, I learned how the law of physics works and it made the space more interesting to me. Here are some fun facts about space that you may or may not already know. Enjoy! *talking to myself because I doubt other people would read the blog anyway, duh*
Did you know: How fast space debris are?
Space debris are junk which orbit around the earth. It consists of something like old satellite, spent rocket stages, fragments from disintegration, and collisions. These space junk, are moving at staggering speed of 35,500 kilometers (22,000 miles) per hour. With that kind of speed, you wouldn’t even able to see the object coming! So if you’re in space and mysterious holes just appear out of nowhere in a nearby structure, you would know why. And consider yourself lucky the holes are not anywhere in your body.
Did you know: The Origin of our Moon?
Some says that the Moon was just wandering the universe until it get cought by Earth’s gravitational field. There are actually many theories about how our Moon created or ended up orbiting our Earth. The theory I’m about to explain however, is the most popular and the most likely one. Around four billion years ago, the space is not a friendly place. Planets are still in development and collisions between space objects were frequent. Long story short, the young earth was once having a collision with an object about the size of Mars, we called this object Theia. The two collided at a very specific angle, and it is believed that the leftover debris condensed to what is now the Moon. Luckily enough it wasn’t a direct hit. Otherwise, the earth might be long gone..
Did you know: What is Galactic year?
Just like the Earth orbiting the sun, our solar system also orbiting the black hole at the center of milky way galaxy. The difference is, while our Earth takes about 365 days to completely orbit the sun, our solar system takes a tad bit longer than that, about 250 million years for each rotation. Each time our solar system makes it all the way around the milky way galaxy, it’s called one galactic year.
Our solar system is actually traveling at about 792,000 kilometers (483,000 mi) per hour relative to the center of the Milky Way. In other words, you could travel around the earth in about 3 minutes with that kind of speed. It’s estimated that there have been only 18.4 galactic years in the history of the Sun.
Did you know: Ganymede should have been considered as a planet?
IF Ganymede is orbiting the sun. The fact however, it is orbiting our largest planet Jupiter, which makes it considered only as a moon. Ganymede is the biggest moon in our solar system, even bigger than the planet Mercury. It even has its own magnetic field, something that no other moons has. It also has a thin layer of oxygen in its atmosphere, but sadly it’s not enough to support human life.
Did you know: You can fly on Titan?
Titan is one of the moons of Saturn. It has large concentrations of liquid methane and ethane, therefor Titan has a low atmospheric pressure. Combine that with its low surface gravity, and you can practically fly with an artificial set of wings! That assuming if you can live long enough before you’re running out of oxygen and drop dead a few seconds later.
Did you know: Jupiter is protecting Earth? (Sort of)
Jupiter, being the largest planet in our solar system, and known for the “big red spot”, a never ending storm with the size of twice the size of the earth itself. The planet is actually considered by scientists to be important for our safety. The reason is because Jupiter’s huge size, which makes a really strong gravitational pull. It practically pulls space debris or any kind of dangerous objects into its orbit before they can reach Earth.
Did you know: The hottest planet?
Mercury would be the hottest planet in our solar system right? Since after all it’s the closest planet to our sun. Well my good sir, you’re wrong. Apparently Venus, which actually further away from the sun, is way hotter than Mercury (up to 860 degrees F or 460 Celsius). Why? Because Venus has a thick atmosphere of CO2 which traps the heat it receives from the sun. Mercury on the other hand, doesn’t have atmosphere, therefor nothing to hold the heat in.
Did you know: Mercury strange orbit
A day on our Earth equals 24 hours. 24 hours is what it takes for earth to do a full rotation. In mercury however, it takes about 60 days earth to do its full rotation. It would be one heck of a day for us to live in Mercury (not that we can anyway). And moreover, due to Mercury’s distance from the sun (being the closest planet to our sun) it only takes Mercury about 88 earth days to orbit the sun, which means that on Mercury, there are less than two days in a year!
DId you know: If you put Saturn in water, it would float
The Saturn is one big gas Planet (the second biggest planet after Jupiter in our solar system) which primarily consists of Hydrogen. The actual density of Saturn is only 0.687 g/cm3, it’s so low that if you put a giant glass of water below it, it would float because the density of water is 0.998 g/cm3. One problem though, we need to have a massive glass of water if we want to put that theory to the test.
Did you know: The Space Roar?
Our space is not so silence after all. Although sounds can’t travel through space, radio waves however, can. Scientists were attempting to study early stars in 2006 but they ran into a problem, they were faced with a mysterious noise from some of the planets. The scientists believe that these sounds are radio waves, but they didn’t know where the radio waves coming from or what is causing it. Really odd. Here are some examples of ‘space roar’ if you want to hear it yourself.
Did you know: Space is big, absurdly big.
Well we’re not calling it space for nothing, because that’s what it mostly is, just empty space. The Sun itself is 99.8 percent of all the mass in the solar system, the other 0.2 percent are the rest. Asteroid, meteoroid, comet, our planet earth and other planets, all of them only contribute 0.2 percent of the matter, and most of it came from Jupiter.
The Sun which volume is 600 times greater than everything in the solar system combined, is less than one-trillionth of a percent of the entire solar system’s volume. And we’re only talking about our own solar system so far, lad. How about the size of galaxy we’re living in, the milky way? Our galaxy is approximately 100,000-120,000 light-years in diameter. Let’s think about what that really means for a moment. Let’s say if someone/something travelling from one far side of the milky way galaxy with the speed of light, the fastest speed currently known to man which is about 186,000 miles/second, it would take a whole 100,000 to 120,000 years for them to reach the other end of galaxy! Insane. And that’s only our galaxy, there are other countless galaxy out there. At this point my brain would just say "fvck it" and give up thinking about how big the universe really is. To understand the size of our universe is impossible, it’s well over our comprehension. Our beloved earth is just a little puny and insignificant planet compared to how big the universe is.