This problem is english language specific. It's called the dark side of the moon. In french, we say "face cachée": hidden side.

Ooh I recognize that twitter account. "Ill-informed" is an understatement.

Even compared Trump to Marthin Luther King Jr once.

You're an ill-informed English major. You instructed me to call you that, so I did.

The light source for this image is the Sun.

"The dark side of the moon" is a phrase that seems to have a strange effect on people; they seem to use that phrase to incorrectly mean the far side of the moon, and then that puts the idea in their heads that the far side is always dark. It isn't; the far side is fixed, the dark side is constantly changing.

The Moon is tidally locked to Earth, this means the moon's rotational speed and its orbital period are the same, the moon rotates once on its axis for every one orbit of the Earth it performs, meaning it doesn't (significantly) rotate when seen from Earth. No human saw the far side of the moon until the Soviets flew a satellite around it, and only 27 men and 1 woman have ever seen it with their own eyes. Until this week, those numbers were 24 and 0.

It is hidden from us but not from the Sun; we observe the Earth waxing and waning, being full and then half a month later being new. When the moon is new, the near side is in darkness and the far side is in light. On the Lunar surface, a day and night takes an entire month, while the continents and oceans of the Earth hanging still in space overhead whirl past nearly 30 times.

Finally...the image above isn't the whole far side. About half of the near side is visible; the big dark patch to the right is the Ocean of Storms, most of the Sea of Rain is visible as well. Kepler and Copernicus crater are visible, Tycho is just out of shot, if you look closely you can just barely see one of Tycho's rays across the Sea of Clouds. That one very dark patch just right of center is Grimaldi crater. All those features are visible from the Earth, in fact two of the Apollo landing sites are visible here, 12 and 14. The very large carter, the dark patch to the left of center of the image is Mare Orientale, which is just barely visible on the edge of the Moon from Earth, from our point of view it's on the "side". It's eastern ridge is visible from Earth but we don't really see the dark mare itself.

I had to explain to a co-worker today, that the far side of the moon and the shadow side is not the same thing. I'm amazed how uninformed some people are.

Other explained this in more detail, but TLDR:

The moon waxes and wanes from earth's perspective throughout the month, yet half the moon is always facing the sun. Just being tidally locked doesn't mean it doesn't get sun.

As someone else said:

Dark Side ≠ Far Side

They even did call it the far side, not the dark side.

Because the dark side of the moon is in fact not dark most of the time.

A lunatic confused by the moon. There's a certain poetry to that.

The headlights of the spaceship of course

If you blink really fast the heat generated by your eyelids makes a very bright light that is very similar to sun rays.

Fortunately for us the 4 astronauts were very well trained with this technique so they each took turns at lighting up the moon while the others took photographs.

In other news it was probably not a good idea to call it the dark side of the moon hence why it's refer to as the far side of the moon.

Good luck with the blinking, stay hydrated.

They used the flash duhh...

This make me sad, English major or otherwise. I mean, you can look up at the moon and see when the far side is at least partially illuminated.

Hint:

Far Side ≠ Dark Side

It can be confusing because the far side of the Moon is sometimes also referred to as the Dark Side because it is "dark" to us, in the sense that we cannot see it from Earth.

I get that she's an English major, but how is that an excuse to not know that cameras typically have a flash so they can illuminate the object being photographed?

This is actually neither the far side nor the near side; it's in between the two.

The "side side"?

It's only the far side from Earth.

“If the Naomi be Klein/ you’re doing just fine./ If the Naomi be Wolf/ Oh, buddy. Ooooof.”

Jumped a little when I saw the name.

Wait a second...

Starlight?

Yo I've had to explain to way too many people lately that the far side isn't "dark". When there's a new moon the light is on the other side....

Is this satire, or is she genuinely confused?