These are the lunar phases we see:

- π = New Moon
- π = Waxing Crescent
- π = First Quarter
- π = Waxing Gibbous (approaching Full Moon)
- π = Full Moon
- π = Waning Gibbous (after Full Moon)
- π = Third (Final) Quarter
- π = Waning Crescent
When we look at the sky, especially at night, we can see the Moon. What many people donβt know is that we always see the same side of it.
As shown in the image above, one side of the Moon always faces Earth. You can imagine it like a coin that always shows the same face to us, even though it has another side. This is often called the βfar sideβ of the Moon.
People sometimes call it the βdark sideβ of the Moon, but this is not correct. Both sides of the Moon receive sunlight. During a new moon, the side facing us is not lit, which is why we cannot see it.
This effect, where the Moon rotates in sync with Earth, is called synchronous rotation.
Luna 3 was the first spacecraft, launched in 1959, to travel around the Moon and take pictures of its far side. The mission faced several challenges - some equipment stopped working early, and the spacecraft experienced a drop in temperature. After circling the Moon, the signal was very weak, so the spacecraft had to carefully point its antenna toward Earth to send the photos before re-entering the atmosphere.