Earth is the only planet we know of that has ever burned on fire.. Venus is considered the hottest planet in the solar system and there may also be volcanoes on its surface that emit hot magma, however, according to scientists, there have never been fires there. This also applies to other planets surrounding the Earth, or any other star, writes IFLScience.

In fact, for billions of years of Earth's history, there was simply no fire.. According to scientists, billions of years passed before conditions for fire on the planet became possible at all, and the first inhabitants of our planet lived in a world without fire much longer than scientists previously thought.

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Earth's volcanoes could indeed produce " However, all this was not real fire, but only magma pushed up and sprayed from the vent.

Researchers believe that 2.4 billion years ago, the Earth's atmosphere was probably just a thick haze of methane, which was the main reason for the emergence of bacterial life on the planet. Then the Great Oxidation Event occurred - during this period, ancient cyanobacteria began to generate energy from sunlight, releasing oxygen into the atmosphere.

As a result, molecular oxygen began to accumulate in the earth's atmosphere for the first time, but its concentration was still not enough to ignite.. The Great Oxidation Event, sometimes called the oxygen catastrophe, likely plunged the Earth into a deep freeze as oxygen destabilized the methane, clearing it and eliminating the greenhouse effect. As a result, the Earth became cold and devoid of fire.

Scientists note that the first fossil evidence of fire we have today dates back to the Middle Ordovician period—billions of years later.. When it comes to fire, there is a middle ground: below 13% oxygen, plant matter simply won't be able to burn, but at 35% oxygen, plant matter will burn so well that forests simply won't be able to grow or sustain themselves..

It is known that the Ordovician period, about 470 million years ago, brought the first changes - mosses and lichens began to produce significantly more oxygen. Eventually its concentration became sufficient to cause fires.

The researchers also discovered the first fossil evidence of fire on Earth and it dates back to only about 42 million years ago, representing charcoal found in rocks from this period. However, since oxygen levels still fluctuate greatly, the first large-scale forest fires only occurred about 383 million years ago and have become a nightmare ever since..

Previously, Focus wrote that the number of forest fires on Earth will increase by 50%, many species will become extinct.