24 Myths About Space Crashed With Facts

[Music] yep we all know what the Sun is why summer is hotter than winter and that vacuum is absolutely empty but do we really it turns out lots of things we think are common knowledge at this point are in reality not so obvious the Sun is a fireball the keine what we see as the Sun in the skies is the result of innumerable processes of nuclear fusion this releases an unimaginable amount of energy every second but nothing here is actually burning for fire to burn it needs oxygen and it's really scarce in the Sun the Sun is yellow the power in our sun's light is so immense we just can't put a stamp of one color on it it's a lot of colors mixed together which makes it appear as white we see the Sun as yellow or orange sometimes red only because the atmosphere of the earth scatters colors like blue green and violet this is also why we see the sky as blue water is extremely rare in the universe both of the elements water consists of are among the most abundant stuff in the universe we think water is scarce only because we rarely found it on our neighboring planets but science proposes there are lots of huge worlds having up to half of their mass as water to compare our planets mass is only 0.02 percent water all comets have tails in reality comets are almost invisible before they get close to the star and their tails appear this tail consists of ice scattering away when the comet gets closer to the heat of the star if the comet isn't heated it won't have a tail the void of space is cold space isn't just cold it's extremely cold - 454 degrees Fahrenheit nothing a sweater can save you from but relatively close to the Sun it gets up to 250 degrees this is also why space suits are white they need to reflect as much light and heat as possible orbits are circles with massive space objects in their center well the Sun holds planets in their orbits due to its gravitational pull planets have their own pull that shifts the center of orbit away from the Sun it looks more like they dance with each other Plus orbits have elliptical shapes not circles summer is warmer because we're closer to the Sun nope not at all during summer the Sun is above the horizon for up to 17 hours a day but during the winter it's just six hours this happens because the axis of the earth is tilted at an angle so at one time of the year the northern part of the earth catches more sunlight and at another time it's the southern parts turn to get more warmth astronauts work out on orbit because they need muscular bodies to work in space the gravity on orbit doesn't affect your body and it doesn't work as much astronauts work out because they need to be ready to return back to earth and it's gravity without feeling like they're about to get squished it's difficult to go through asteroid belts well unlike the movies real asteroid belts are kind of boring and empty between two space rocks in a belt lie huge distances of nothing at all going through one in a spaceship with decent planning would be a walk in a park except here in space sound and fire in space there's no oxygen in space so if a spaceship goes boom any fire will burn out the oxygen inside the ship and then just fade and in the vacuum of space there's not enough matter to transfer the sound the Sun would be definitely loud otherwise since it basically produces innumerable colossal blasts happening every moment light years our units of time if you like sci-fi stories or read science articles you know this for sure but some people still don't realize a Lightyear is not time but the distance one photon can go through the vacuum of space in a year light is always the fastest thing ever kinda but only in a vacuum today we know several ways to slow down photons it will move slower through different substances electrons on the other hand will move at the same speed in these substances and sometimes they will be even faster than light the vacuum of space is absolutely empty well despite having little or no matter in it the vacuum is actually filled with energy fields interacting with each other they can even produce particles gas giants are made of gas seems obvious I mean planets like Jupiter or Saturn are called gas giants but they still have solid cores deep inside them in theory at least because it's impossible to study gas giants properly any probe would get smashed by immense pressure as soon as it gets too close super-earth planets are like the earth but bigger this term only describes the size these planets are bigger than the earth but not as big as let's say Uranus or Saturn black hole swallow everything around them like colossal funnels black holes got their name because we can't see them directly these are objects so massive and dense their force of gravity works as a trap even light can't escape it other objects can orbit them like planets orbit the Sun still if you get past the event horizon of a black hole mm-hmm there's no turning back the solar system has eight planets there's mathematical evidence that this might be wrong but much farther from outer reaches there should be a planet ten times more massive than Earth no names yet scientists still has to confirm its existence we know how big the universe is the furthest place from where light ever reached us was 13.8 billion light years away from the earth but the universe is constantly expanding extremely fast and if something was 13.8 billion light years away from us by now it's even farther away mercury is the hottest planet in the solar system mercury is closest to the Sun but Venus is much hotter mercury has no atmosphere while Venus has one it mostly consists of co2 that traps heat inside and adds to the high temperature the open space has a smell sometimes astronauts say that it smells like a Burt steak but what they actually mean by that is when they come back to the space station from a space walk or something and take off their helmets they sense this smell from their spacesuits it's impossible to smell the vacuum of space itself we can see a million stars in the skies well the number is actually much more modest only about three thousand stars there are lots of other objects we may also see and mistake them for stars planets in the solar system distant galaxies and just satellites everything in the solar system is locked in its place nope everything is always in motion the moon becomes more and more distant from the earth with each year and we're also going away from the sign the speed of such shifts and movements is too small to be a big deal for us but it happens constantly moon's orbit planets in the same direction planets rotate well Triton is the biggest moon of Neptune and it's the only one in the solar system that goes in the opposite direction it also gets closer to Neptune with each year and one day it'll get smashed by it and become another asteroid ring we're on the verge of interstellar travel we have literally no technology that would allow that in our lifetime and probably ever nothing can go faster than life and for big objects it's virtually impossible to reach even a fraction of such speed that means that going interstellar would take ages upon ages to do and people have no idea how to get around this problem but interstellar travel does make for exciting movies and it prevents space movies from being 50 years long which would make the classic phrase are we there yet even more annoying hey if you learn something new today then give the video a like and share it with a friend and here are some other cool videos I think you'll enjoy just click to the left or right and remember stay on the bright side of life [Music]

Channel: BRIGHT SIDE

Views: 400,109

Keywords: bright side, brightside, bright side videos, myths about space, space myths, facts about space, facts about space and planets, facts about space and the universe, facts about space and stars, facts about space and the solar system, facts about space bright side, good news, bright side space facts, the universe, Milky Way, facts about the Universe, spiral galaxy, black holes, mind blowing facts about space, beautiful facts about space, facts about space in english

Id: vrIls3HXAu4

Length: 10min 0sec (600 seconds)

Published: Sat Apr 25 2020