Fifty years ago, scientists discovered that the Earth is occasionally hit by cosmic rays of enormous energies.
24 Sept 2017 9:25 AM IST
Historically, the North and South magnetic poles have flipped every 200,000 to 300,000 years.
1 Feb 2018 10:09 AM IST
This was the third scheduled launch attempt for NASA's 2017 Wanaka Balloon Campaign from New Zealand.
10 April 2017 1:37 PM IST
