Optics Memes

The sun's peak emission wavelength is around 500 nanometers, which falls smack in the green part of the visible spectrum. Yet somehow the sun appears yellow-white to us! This cosmic prank happens because the sun emits across the entire visible spectrum, and when all those wavelengths hit our eyes together—boom, we perceive white-ish light with a yellow tint (thanks atmosphere for the color filtering). This historical gentleman's reaction is basically every astronomy student when they first learn this mind-blowing fact. Green sun?! Next you'll tell me the sky isn't actually blue! (Spoiler: it's not, it just scatters blue wavelengths more... but that's a meme for another day!)

The perfect intersection of astronomy and vampire lore. One astronomer warns about Count Dracula's castle, but their telescope-wielding colleague can't see anyone—because vampires don't have reflections, and telescopes rely on light reflection. It's basically the astronomical equivalent of trying to photograph your lab supervisor who's been working nights for 300 years straight. The universe's oldest optical illusion.