NASA on Friday tweeted a picture of the full moon mentioning Guru Purnima, which is celebrated during the full moon day in the month of Ashadh. It's known as the birthday of Veda Vyasa, and is dedicated to teachers to pay respect and show gratitude to them.

NASA, however, did not stick to Guru Purnima alone, but tweeted about its many other names from different traditions, including their ‘favourite’ — Thunder Moon.

Full moon this weekend - called Guru Purnima, Hay Moon, Mead Moon, Ripe Corn Moon, Buck Moon, or our favorite, THUNDER MOON pic.twitter.com/XLufAdoDEQ — NASA Moon (@NASAmoon) July 7, 2017

Thunder Moon because thunder storms are frequent at this time of the year.

Here's how the Moon gets the other names:

The name Hay Moon comes from harvest season as farmers bale hay for coming winter in parts of the world.

It's also the month when Native Americans harvest corn and so it's also called Ripe Corn Moon.

Also called Buck Moon or Full Buck Moon among the Native Americans as this is the time male deer grow antlers.

This is when the large beehives are formed and the fermented honey is used to produce a type of wine called Mead and that's how the full moon gets it name of Mead Moon.