(Image- NASA/ Wikimedia Commons) Artist's representation of the planet revolving around its star Photograph:( Others )
Can you imagine a space body almost hot as our Sun all the while being a 'planet'? Well, there are such planets
For the most part, our knowledge of the word 'planet' revolves around the idea is that its a huge space rock, cooler than the stars, deriving energy from the one it revolves around. We can't be blamed because Earth is one such space rock. It is (much) cooler than the Sun and derives all the life forming energy from it.
But universe, as infinite it is, has ways to surprise our minds and set ideas we tend to have about it.
Can you imagine a space body almost hot as our Sun all the while being a 'planet'? Well, there are such planets.
Meet Kelt-9 b! It's a planet 670 lightyears away from Earth. It was found in 2016.
It has been found that this planet has a temperature of 5000 K (4726 degree Celsius). This makes this planet hotter than 80 per cent of all individual stars in the universe.
Kelt-9 b is a gaseous planet and it is 1.8 times bigger than Jupiter, the biggest planet in our solar system. It revolves around its star that is twice as hot as the Sun. In addition, Kelt-9 b has a very very short radius of revolution. It means that it revolves around its star in a very close orbit that is smaller even than that of Mercury in our Solar System.
Kelt-9 b is tidally locked with its star. That means that one side of the planet always faces the star when it makes its revolution.
Why studying Kelt-9 b is important
Planets like Kelt-9 b are called 'hot Jupiters' because of their gaseous nature, gigantic size and extremely hot temperature. This means that behaviour of such planets gives us a brilliant opportunity to study Physics in conditions that are nearly impossible to reproduce on Earth.
In other words, these planets can roughly be called giant labs in space!
The universe truly has amazing secrets!