Foundation Day Lecture reveals more evidence of climate change with Sun's atmospherics

The Sun influences the Earth’s climate, and during the last century there has been a gradual warming of the atmosphere related to human activity. The present solar models predict that the early Sun was about 30 per cent fainter than it is now. In about three billion years, the outer atmosphere of the Sun will begin to swell so much that our own atmosphere will heat up. Eventually the Sun’s outer layers will envelop Mercury, Venus and probably our planet as well, said Dr Siraj Hasan, Distinguished Professor and Former Director of the Indian Institute of Astrophysics. He was delivering the Thirteenth Darbari Seth Memorial Lecture, organized by The Energy and Resources Institute (TERI), in New Delhi today.