NASA tweets about 'Guru Purnima'
NASA's official account about Earth's moon has shared a photo of a full moon to mark 'Guru Purnima' which falls on July 9 for this year. Guru Purnima is an auspicious day dedicated to teachers as per the Hindu calendar. It is celebrated by Hindus in honour of Vyasa and Lord Shiva, and by Buddhists in honour of Lord Buddha.