pics

From the link above:

Sprites, on the other hand, are one of the most commonly observed types of TLEs [Transient Luminous Events] — brief, colorful flashes of light that occur high above thunderstorms in the mesosphere, around 50 miles (80 kilometers) above Earth’s surface. Unlike gigantic jets, which burst upward directly from thundercloud tops, sprites form independently, much higher in the atmosphere, following powerful lightning strikes. They usually appear as a reddish glow with intricate shapes resembling jellyfish, columns, or carrots and can span tens of kilometers across. Sprites may also be accompanied or preceded by other TLEs, such as Halos and ELVEs (Emissions of Light and Very Low Frequency perturbations due to Electromagnetic Pulse Sources), making them part of a larger and visually spectacular suite of high-altitude electrical activity.

A lot of the other light patches in this image are city lights.

The other patches of light are cities. Lightning isn't as grainy looking. The exposure time of the shot is short so the image doesn't blur as the station moves, so the chances are stacked against getting two flashes in the one image.

Well allow me to fix some mistakes. they can't poo normally, really, or it's rather hard. peristalsis probably works differently too, although it doesn't rely on gravity per se.

Anyway, first off, it's not 0 g, it's "microgravity", because technically if we're being pedantic, there's nowhere in the universe where there's literally zero G as it's kinda everywhere, but even less so for the people on the space station, they just happen to be in synchronous freefall with the station, indefinitely, which basically is the same as no gravity subjectively, but anyway.

They poop into walls nowadays, and apparently, no need for any manual helping. But @Flax_vert@feddit.uk there isn't honestly completely wrong, even if he meant it as a joke. I don't know how much you know about this, Flax, but here's where you hit home:

"There's a problem of separation," Roberts said. "Whatever comes out of you doesn't know it's supposed to come away from you." Each fecal collection bag came with a "finger cot" to allow the astronauts to manually move things along. Then they had to knead a germicide into their waste so that gas-expelling bacteria wouldn't flourish inside the sealed bag and cause it to explode.