‘World class’ optical telescope – India’s largest – to be activated near Nainital

The Devasthal optical telescope’s 3.6-m primary mirror with a hole in the middle, through which the secondary mirror will focus the light. Credit: IIST

The instrument is part of a widening foray into observational research in astronomy that India has undertaken since the 1960s, and bolstered with the successful launch of its first multi-wavelength satellite in September 2015.

What’s the universe telling us post-LIGO?

Since the LIGO Scientific Collaboration announced the first direct detection of gravitational waves on February 11, 2016, there have been at least 51 scientific papers written up on the topic discussing a variety of possibilities. The earliest papers parallel the announcement’s two ostensible achievements: Albert Einstein was right when he postulated the existence of gravitational waves in … Read more