India, Sept. 24 -- Harold Morowitz and Carl Sagan speculated in 1967 that the clouds of Venus aka Shukra may harbour life. The recent exciting detection of phosphine from these clouds strengthens the possibility that micro-organisms may indeed be floating around in them. Galileo's discovery through his telescope of the Moon-like phases of Venus solidified our understanding that Venus and Earth both orbit the Sun. Venus came to be regarded as something of a twin of the Earth, with roughly similar size, mass and solar distance. Radio images of spacecraft that travelled to Venus in the `60s revealed, however, that it was blistering hot on the surface. So much so that even metals could only be molten, and it had a crushingly high-pressure cloud...