LUCKNOW, March 3 -- A rare Blood Moon spectacle is set to mark the first total lunar eclipse of the year on Tuesday, with Indira Gandhi Planetarium organising a special public viewing programme on its premises. Subject to clear weather, the concluding phase of the eclipse will be visible from Lucknow and other parts of North India, scientific officer Sumit Srivastava said. "This eclipse is significant as, during total phase, the Moon may appear reddish, a phenomenon known as a Blood Moon. People can observe the eclipse through telescopes at the planetarium. In most of India, the Moon will rise after the eclipse has begun. In Lucknow, sunset will be at 6.08 pm and the Moon will appear shortly thereafter. By then, the total phase would have ended, but the partial phase will continue. The maximum visible duration from Lucknow is about 39 minutes," Srivastava said. The programme will continue till 7 pm and will be free of charge. It is being organised by the UP Amateur Astronomers Club. Explaining the phenomenon, Srivastava said a lunar eclipse occurs when Earth comes between the Sun and the Moon, casting its shadow on the lunar surface. During totality, the Moon may appear reddish as Earth's atmosphere scatters shorter blue wavelengths and allows longer red wavelengths to pass through....