THE MOON 

• The only satellite of the earth.
• Takes 27 days, 7 hours and 43 minutes to rotate on its axis and approximately the same period of time it takes to revolve around the earth.
• The moon's period of revolution with reference to the sun is about 29.53 days. This period is called a synodic month.
• Only 59% of the total surface of the moon is visible from the Earth.
• The bright part of the moon is full of mountains whereas the dark patches are low lying plains.
• ‘Sea of tranquility’ made of the plain of dust particles, is on the rear side of the moon, which always remain dark.
• Has no atmosphere, no twilight and no sound.
• Temperature during day time is about 100°C and during night, it drop down to about -180°C.
• Light from the moon takes 1.3 seconds to reach the earth.
• Size of the moon is one fourth the size of the earth.
• Study of moon is known as ‘Selenology’
• Moon is also known as the ‘Fossil planet’.

SUPER MOON  : Super moons happen when a full moon is closest to the Earth, appearing bigger and brighter than normal. They are called ‘super’ because they are 15% brighter and 30% bigger than regular full moons.

BLUE MOON : If in a calendar month, there are two full moons then the second full moon is referred as blue moon. It is because of the gap between the two moons which is less than 31 days. If in any specific year, blue moon appears in two or more than two months then it is referred as blue moon year.

BLOOD MOON  : ‘Blood moon’ is the name given for a view of the moon during a total lunar eclipse. Because of the way light passes through the earth's atmosphere during an eclipse, red light from the sun is reflected on to it. The moon's reddish colour earns it the nickname - “blood moon”.

CHANDRAYAAN - 1 

 On 22 October, 2008 : ISRO has successfully established Chandrayaan-1 in the moon's orbit from Satish Dhawan Space Centre, Sriharikota by PSLV-C-1. Chandrayaan-1 is first satellite with its own type with high resolution remote sensing facility with which images of moon could be seen.

CHANDRAYAAN - 2 MISSION 

India's GSLV MKIII-M1,  successfully launched Chandrayaan-2 spacecraft on 22 July, 2019 into its planned orbit. The launch took place from the second launch pad at Satish Dhawan Space Centre, Sriharikota. The motive behind Chandrayaan-2 mission was to explore the unexplored South pole of the moon.

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