Science
The sun’s atmosphere is hundreds of times hotter than its surface – here’s why – The Conversation UK
Alfvén waves, first proposed 80 years ago, could explain why the sun’s atmosphere is so much hotter than its surface.
The visible surface of the sun, or the photosphere, is around 6,000°C. But a few thousand kilometres above it a small distance when we consider the size of the sun the solar atmosphere, also called the corona, is hundreds of times hotter, reaching a million degrees celsius or higher.
This spike in temperature, despite the increased distance from the suns main energy source, has been observed in most stars, and represents a fundamental puzzle that astrophysicists have mulled over for decades.
In…
-
Noosa News13 hours agoMega-team of heavy horses sets world record at Good Old Days Festival
-
General5 hours agoHow the internet reacted to Brisbane Broncos winning the NRL grand final
-
General16 hours agoEnglish springer spaniels Kelly and Milo helping fight dieback in Western Australia
-
General15 hours agoHomicide Squad investigating ‘suspicious’ death of 84yo woman in Sydney suburb of Melonba