Venus was once like the Earth until climate disaster turned it into a hellish planet.

Venus used to be a habitable planet with liquid water on our surface, much like ours, until climate change occurs. turned into a hellish world.

NASA's new computer models suggest that, 700 million years ago, temperatures ranged between 20 and 50 ° C at the surface.

NASA's Pioneer Venus mission has alluded to the fact that the planet had already had an ocean in the 1980s – but at that time scientists thought it evaporated quickly.

But a new study by the Space Science Institute Nasa Goddard suggests that the ocean has lasted for billions of years.

Researchers believe that a mysterious catastrophe, 700 million years ago, turned Venus into a hellish world.

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Dr. Michael Way, Principal Investigator, said, "Something happened on Venus, a huge amount of gas was released into the atmosphere and could not be reabsorbed by the rocks. .

"On Earth, we have some examples of large-scale degassing, for example the creation of Siberian traps 500 million years ago, which is linked to mass extinction, but nothing on this scale."

The discovery suggests that life may have once flourished there – and means that many planets spotted by telescopes may also have once hosted life, say the researchers.

Dr. Way said, "Our hypothesis is that Venus could have a stable climate for billions of years.

"It is possible that this almost global resurfacing event is responsible for its transformation from a climate similar to Earth to the greenhouse we see today.

"Our models show that there is a real possibility that Venus was habitable and radically different from the Venus we see today.

"This has all kinds of consequences for the exoplanets present in what is called the" Venus Zone ", which may actually contain liquid water and temperate climates."