The hottest thing on Earth is X-rays which heat metal to 3.6 million degrees F.
The chamber that aluminum was converted to hot dense matter by way of x ray bombardment reached temperatures of 3.6 million degrees F.
Other hottest things on earth are the flame of a fire, melting point of a diamond, earth's core, lightning bolt, sun's core and controlled nuclear fusion.
A Volcano is also very hot.
The temperature at the surface of the Sun is about 10,000 Fahrenheit (5,600 Celsius).
The temperature rises from the surface of the Sun inward towards the very hot center of the Sun where it reaches about 27,000,000 Fahrenheit (15,000,000 Celsius).
A CERN experiment at the Large Hadron Collider created the highest recorded temperature ever when it reached 9.9 trillion degrees Fahrenheit.
The experiment was meant to make a primordial goop called a quark–gluon plasma behave like a frictionless fluid.
That's more than 366,000 times hotter than the center of the Sun.
The sun is a bolus of gas and fire measuring around 27 million degrees Fahrenheit at its core and 10,000 degrees at its surface.
Meanwhile, the cosmic background temperature—the temperature of space once you get far enough away to escape Earth's balmy atmosphere—hovers at -455 F.F
Of all the bodies in our solar system, the sun is probably the one we want to give the widest berth.
It gushes radiation, and even though its surface is the coolest part of the star, it burns at about 9,940 degrees Fahrenheit, hot enough to incinerate just about any material.
Lightning can get five times hotter than the sun.
The surface of the sun is estimated to be 10,000 degrees Fahrenheit.
However, a lightning strike can reach 50,000 degrees Fahrenheit.
This is because air is a poor conductor of heat, so it gets extremely hot when the electricity (lightning) passes through it.
Even after those first scorching millennia, however, the planet has often been much warmer than it is now.
One of the warmest times was during the geologic period known as the Neoproterozoic, between 600 and 800 million years ago. Conditions were also frequently sweltering between 500 million and 250 million years ago.