I haven’t ever drawn Google before, so I had to fix that! The eyes are based off of @mint-bees post the other day about YouTubers and their halo lights leaving a ring around the pupils, and so I made a headcannon about how Google’s eyes look like this!
Asteroids—named by British astronomer William Herschel from the Greek expression meaning “star-like"—are rocky, airless worlds that are too small to be called planets. But what they might lack in size they certainly make up for in number: An estimated 1.1 to 1.9 million asteroids larger than 1 kilometer are in the Main Belt between the orbits of Mars and Jupiter. And there are millions more that are smaller in size. Asteroids range in size from Vesta—the largest at about 329 miles (529 kilometers) wide—to bodies that are just a few feet across.
2. What Lies Beneath
Asteroids are generally categorized into three types: carbon-rich, silicate, or metallic, or some combination of the three. Why the different types? It all comes down to how far from the sun they formed. Some experienced high temperatures and partly melted, with iron sinking to the center and volcanic lava forced to the surface. The asteroid Vesta is one example we know of today.
In 1801, Giuseppe Piazzi discovered the first and then-largest asteroid, Ceres, orbiting between Mars and Jupiter. Ceres is so large that it encompasses about one-fourth of the estimated total mass of all the asteroids in the asteroid belt. In 2006, its classification changed from asteroid to as a dwarf planet.
5. Mission to a Metal World
NASA’s Psyche mission will launch in 2022 to explore an all-metal asteroid—what could be the core of an early planet—for the very first time. And in October 2021, the Lucy mission will be the first to visit Jupiter’s swarms of Trojan asteroids.
6. Near-Earth Asteroids
The term ‘near’ in near-Earth asteroid is actually a misnomer; most of these bodies do not come close to Earth at all. By definition, a near-Earth asteroid is an asteroid that comes within 28 million miles (44 million km) of Earth’s orbit. As of June 19, 2017, there are 16,209 known near-Earth asteroids, with 1,803 classified as potentially hazardous asteroids (those that could someday pose a threat to Earth).
7. Comin’ in Hot
About once a year, a car-sized asteroid hits Earth’s atmosphere, creates an impressive fireball, and burns up before reaching the surface.
8. But We’re Keeping an Eye Out
Ground-based observatories and facilities such as Pan-STARRS, the Catalina Sky Survey, and ATLAS are constantly on the hunt to detect near-Earth asteroids. NASA also has a small infrared observatory in orbit about the Earth: NEOWISE. In addition to detecting asteroids and comets, NEOWISE also characterizes these small bodies.
9. Buddy System
Roughly one-sixth of the asteroid population have a small companion moon (some even have two moons). The first discovery of an asteroid-moon system was of asteroid Ida and its moon Dactyl in 1993.
10. Earthly Visitors
Several NASA space missions have flown to and observed asteroids. The NEAR Shoemaker mission landed on asteroid Eros in 2001 and NASA’s Dawn mission was the first mission to orbit an asteroid in 2011. In 2005, the Japanese spacecraft Hayabusa landed on asteroid Itokawa. Currently, NASA’s OSIRIS-REx is en route to a near-Earth asteroid called Bennu; it will bring a small sample back to Earth for study.
ok first: this realization fucked me up a year or so ago
everything we are taught about light and color, from art classes and physics classes, computing, whatever, is mostly bullshit. Its all based entirely on how the human eye functions.
primary colors? arbitrary. based entirely on human vision (which is why partially why primary colors differ in paint and RGB) Thats the main thing.
so the divisions of color into wavelength are so uneven (correct me if i’m wrong, but green is disproportionately large) (on that note, humans are better at distinguishing shades of green than of other colors) because its based on how we see things and no real mathematical or physical differences in the light.
other organisms with different eye structures have completely different colors and light. Our eyes have three types of cells to process color (corresponding to Red Green and Blue) butterflies have five types. What the fuck are they seeing? If we could ever know, how could we process that image into something we can sense?
humans made the world to conform to them (RGB screens deliberately use the eyes RGB structure to make a coherent image) and its weird to realize the ways in which we are limited by our senses, especially since sight is probably out main sense.
in that vein, any alien coming to earth would be highly unlikely to be able to use our technology because its surprisingly specific to our eye structure.
they’d have to have fairly good vision to start with, so if they survive mainly on smell or sound on their home planet, earth tech’s not for them (which reveals so flaws in out world in helping disabled people)
their eyes would need to have RGB cells, at least two of those? or something similar enough that its not a big deal. because for some fucking reason our eyes signal red+green as yellow. also, will alien vision even be in out visible range? what if they only see IR or UV light what then
itd be like, “good evening victoria, what is that device in your hand? technology from earth?”
“yeah, i’m just reading something on my phone,” and seeing the screen its a horrible mess of colored dots that burns into your retinas and nothing like human writing on paper.
we’d need to abandon RGB all together and use the lights that genuinely change wavelength.