10 Insane Space Facts
1. Outer Space is only 62 miles away! Although there is no official solid boundary for where space begins, the Kármán line sits at 62 miles above sea-level and is conventionally used as the start of outer space in space treaties or for aerospace records keeping.
2. Space is completely silent! There is no atmosphere in space, which means that sound has no medium or way to travel to be heard. Astronauts use radios to stay in communication while in space, since radio waves can still be sent and received.
3. According to mathematics, white holes are possible, although 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.
4. There are more stars in space than there are grains of sand in the world! There are 10 times more stars in the night sky than grains of sand on the Earth, with 70 sextillion stars being visible from Earth through a telescope. To put that in numbers, 70 sextillion is this: 70,000,000,000,000,000,000,000. Any free-moving liquid in outer space will form itself into a sphere.
5. Light travels from the Sun to the Earth in less than 10 minutes! The time it takes for light to travel to Earth from the Sun. The Photons emitted from the Sun’s surface travel across the vacuum of space at the speed of light to reach our eyes in only 8 minutes and 20 seconds.
6. There is floating water in space! Astronomers have found a massive water vapor cloud which holds 140 trillion times the mass of water in the Earth’s oceans somewhere around 10 billion light years away, making it the largest discovery of water ever found.
7. There are three main types of galaxies: elliptical, spiral & irregular! The Milky Way galaxy, the one that our solar system resides in, is classified as a spiral galaxy.
8. Using the naked eye, you can see 3 – 7 different galaxies from Earth! You can see the Andromeda Galaxy (M-31), both Magellanic Clouds, our own Milky Way galaxy, the Triangulum Galaxy (M-33), the Omega Centauri and the Sagittarius Dwarf Spheroidal Galaxy.
9. The first ever black hole photographed is 3 million times the size of Earth!
10. A sunset on Mars is blue! Mars has less than 1% of the Earth’s atmosphere. So the sunsets on Mars appear as blue due to the way the blue light from the Sun is captured within the atmosphere of Mars.