Scientists have termed this phenomenon as a ‘Coronal Heating Problem’.Īlso, the Sun is a magnetized star and the active regions above the Sunspots have stronger magnetic fields. The increase or rise of temperature in Corona despite moving away from the source of energy is against the natural expectation that the temperature should reduce.

But the temperature starts to increase again above the photosphere with a height reaching one million degrees or more in the corona. The ionized gas temperature at the core of the Sun reaches up to 15 million degrees Celsius, which drops to mere 5,700 degrees at the solar surface (photosphere). The most mysterious and crucial puzzle related to the sun is its temperature. The mysterious outer region of the Sun consists of hot and highly diffuse plasma, ionized gas at temperatures that exceed one million Kelvin, much higher than the photospheric temperature of 6,000 Kelvin, the visible surface temperature of the Sun. The conjunction event has been taken from the year 2015 a time when the Sun’s activity was quite low, to study the turbulence in the solar corona. It is a complex mystery, and hence to solve that Indian scientists used S-band radio signals coming from Mangalyaan to study the Solar Corona. The scientists from the Space Physics Laboratory of Vikram Sarabhai Space Centre, Trivandrum Physics Research Laboratory, Ahmedabad and ISRO SRO Telemetry Tracking and Command Network (ISTRAC), Bangalore, used the solar conjunction to look into the atmosphere of the Sun. With the driving curiosity to know more and beyond, a team of scientists used Mangalyaan to study the Solar Corona when the Earth and Mars were on opposite sides of the Sun.

Diving deeper into these mysteries not only reveals the existence of our planet but also allows us to learn about other distant stars better. Our galaxy could be easily misunderstood as there are mysteries which hasn’t been resolved even until today.

Sun corona temperature in kelvin