Venus, the pollution of our solar system, bombarded by radiation, sulfuric acid rain, the toxic hellish landscape of the planet, could once have hosted vast oceans … and in fact it can be quite enjoyable.
In fact, water-covered and life-supportive Venus probably exists for up to 3 billion years, scientists have recently reported.
But that idyllic time in the past of Venus ended abruptly between 700 million and 750 million years, when almost all of the planet's release of carbon dioxide (CO2) stored on the surface rocks disrupted the planet's atmosphere and caused its "greenhouse" transformation. , which we know today, researchers stated in a statement .
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Venus And Earth Can Be Planetary Twins ̵
This fierce inhospitable environment renders Venus unable to sustain most of life as we know it; Therefore, sometimes Venus is called the "twisted sister to Earth".
Or does it? At one time, this now hotter brother may have had more to do with Earth, such as abundant water, a stable climate and appropriate living conditions, scientists say. The researchers presented their findings on September 20 at the Joint Planetary Meeting of the European Planetary Sciences Congress (EPSC) of the Europlanetary Society and the Planetary Sciences Division (DPS) of the American Astronomical Society (AAS) in Geneva.
Using computer simulations, scientists extend their previous findings about the potential habitat of Venus, which they published in 2016 in the journal Geophysical Research Letters . In this study, they describe a young, slowly rotating Venus with inhabited surface temperatures and a shallow ocean of liquid water.
This time they tested their hypothesis with more variables in their models. They created five scenarios that used different topographies for the planet's surface; different amounts of ocean cover; and various chemical compositions in the atmosphere, said co-spokesman Michael Way, a NASA researcher at the Godard Institute for Space Research.
"We also modeled different eras in a time we hadn't done before," Wei added. The models looked at Venus over three periods: about 4.2 billion years ago, shortly after its formation; about 715 million years ago; and since the so-called hell planet is emerging today.
Currently, Venus is bombarded with about twice as much solar radiation as Earth, and some experts suggest that it is too close to the sun to host the oceans at all. However, new models have shown that billions of years ago, this radiation would not prevent Venus from having water on its surface, scientists say.
In simulations, baby Venus cools rapidly after formation, creating a CO2-dominated atmosphere; other climate models of young Earth scientists have also used an atmosphere rich in CO2, Way tells Live Science. But 715 million years ago, nitrogen became the most abundant atmospheric element
In all its simulations, Venus maintained stable surface temperatures for about 3 billion years between 68 F (20 C) and 122 F (50 C). Under these conditions, liquid water – and probably life – could be feasible, scientists say.
"If Venus had a surface with liquid water in its ancient past, our models indicate that it may have had habitable conditions," Way
Originally published by Live Science .