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Total lunar eclipse and supermoon

Topics Covered: Important Geophysical phenomena.

Total lunar eclipse and supermoon:


Context:

Two celestial events- the Supermoon and a total lunar eclipse- will be observed on May 26.

What is a supermoon?

A supermoon occurs when the Moon’s orbit is closest to the Earth at the same time that the Moon is full. In a typical year, there may be two to four full supermoons and two to four new supermoons in a row.

  • Please note: As the Moon orbits the Earth, there is a point of time when the distance between the two is the least (called the perigee when the average distance is about 360,000 km from the Earth) and a point of time when the distance is the most (called the apogee when the distance is about 405,000 km from the Earth).

Why does the moon appear to be red during the event on May 26?

Because of the total lunar eclipse, the moon will also appear to be red. This is because the Earth will block some of the light from the Sun from reaching the moon and as the Earth’s atmosphere filters the light, it will soften “the edge of our planet’s shadow” “giving the Moon a deep, rosy glow.”

 

InstaCurious:

  • Now you know Supermoon & Bloodmoon – But have you ever heard about ‘Harvest Moon’ & ‘Blue Moon’? Read NASA article Here
  • Also try to understand Impact of Moonlight on Earth – Here

 

InstaLinks:

Prelims Link:

  1. What is a Supermoon?
  2. Differences between supermoon and blood moon?
  3. What is a lunar eclipse?
  4. What is Solar eclipse?
  5. Differences between Solar and lunar eclipses?
  6. Sun and moon’s perigees and apogees.
  7. Why does the moon appear to be red during some celestial events?

Mains Link:

  1. How can Supermoon impact tides around the world and India?

Sources: Indian Express.