ANSWER: Supermoon
Explanation:
A complete lunar eclipse will occur along with a supermoon on 27th/28th September 2015 and the combination has not been observed since 1982. It will not occur till 2033 again. A supermoon is a full or new moon making its closest approach to earth. While it will be 220,000 miles away, the moon will look larger and brighter. But this supermoon will be the closest full moon of the year close to 20,000 mobiles than average distance. This is because the orbit of the moon is not a perfect circle. The eclipse marks an end of tetrad or series of 4 total lunar eclipses set 6 months apart. The series commenced in April 2014. Eight of the tetrads will be observed in the 21st century while there were none from 1600 to 1900.
