This is why Sun's atmosphere is much hotter than its surface
The corona is hundreds to thousands of times hotter than the Sun's visible surface, the photosphere.
NASA's first ever mission to 'touch the Sun': US space agency to make big announcement this week
NASA will reveal details about its new mission at an event at 11 a.m. EDT Wednesday, May 31. The event will air live on NASA Television and the agency’s website.
May 29, 2017, 14:38 PM IST