Stargazers are in for a treat on Sunday when they look up at the so-called “supermoon,” when the Moon appears bigger and brighter in the sky as it moves closer to Earth
The lunar disc appears about 7 per cent larger and 15 per cent brighter, although the difference is barely noticeable to the human eye, the BBC reported.
December’s full moon is traditionally known as the “cold moon”. The full moon on Sunday night marks the first and only supermoon of 2017.According to NASA, a supermoon is a Moon that is full when it is also at or near its closest point in its orbit around Earth.
Since the Moon’s orbit is elliptical, one side (apogee) is about 50,000 km farther from Earth than the other (perigee).
But within this orbit, further variations can be caused by the Earth’s movements around the Sun.