The far side of the Moon Pro Preview

These are the lunar phases we see:

content picture

  • πŸŒ‘ = New Moon
  • πŸŒ’ = Waxing Crescent
  • πŸŒ“ = First Quarter
  • πŸŒ” = Waxing Gibbous (approaching Full Moon)
  • πŸŒ• = Full Moon
  • πŸŒ– = Waning Gibbous (after Full Moon)
  • πŸŒ— = Third (Final) Quarter
  • 🌘 = Waning Crescent

When we look at the sky, especially at night, we can see the Moon. What many people don’t 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 β€œfar side” of the Moon.

People sometimes call it the β€œdark side” 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.

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  • #1332
  • 13 Jun 2019

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