A land-ocean pattern was used in a climate model to show how storm clouds could have shielded ancient Venus from strong sunlight and made the planet habitable. This opens up all kinds of implications for exoplanets found in what is called the 'Venus Zone', which may in fact host liquid water and temperate climates.".

In the photo above, dark, narrow streaks called recurring slope lineae are seen flowing downhill on Mars.

Given the current evidence, Kane thinks it's unlikely that these geologic events caused the climate change on Venus. It is possible that the near-global resurfacing event is responsible for its transformation from an Earth-like climate to the hellish hothouse we see today," said Michael Way, study author at The Goddard Institute of Space Science. EY & Citi On The Importance Of Resilience And Innovation, Impact 50: Investors Seeking Profit — And Pushing For Change, planet may still lie in the habitable zone. Venus may have had a shallow liquid-water ocean and habitable surface temperatures for up to 2 billion years of its early history, according to NASA computer modeling of the planet’s ancient climate. This site uses cookies to assist with navigation, analyse your use of our services, and provide content from third parties. Recently, I've contributed to Scientific American.com, Nature News, Physics World, and Yale Environment 360.com. An artist's concept shows Pluto and its moons. “ It completely transformed Venus .”. Venus was likely habitable for 3 billion years. A land-ocean pattern was used in a climate model to show how storm clouds could have shielded ancient Venus from strong sunlight and made the planet habitable. Click here to sign in with It is possible that the near-global resurfacing event is responsible for its transformation from an Earth-like climate to the hellish hot-house we see today," said Way. That is, in its current orbit of 0.72 astronomical units (Earth-Sun distances). "However, our models show that there is a real possibility that Venus could have been habitable and radically different from the Venus we see today. The cause of the outgassing that led to the dramatic transformation of Venus is a mystery, although probably linked to the planet's volcanic activity. Researchers compared this to two other simulations, one using Earth's topography with a deep ocean and an ocean world. "Something happened on Venus where a huge amount of gas was released into the atmosphere and couldn't be re-absorbed by the rocks.

But given its placement as the second planet from the sun, Venus wasn't considered conducive to sustaining an ocean. The simulations suggest that Venus went through a rapid cooling phase a few billion years after it formed. Way says the closest analogy to such Venus resurfacing here on Earth can be found in the Deccan Traps lava flows in India. "However, our models show that there is a real possibility that Venus could have been habitable and radically different from the Venus we see today. Previously, researchers believed that Venus is too close to the sun to sustain liquid water on its surface, beyond the inner limit of the sun's habitable zone. The trailing hemisphere (the side that faces away from its direction of motion) of Jupiter's moon Europa was captured by the Galileo spacecraft. Research suggests Venus may have had water oceans billions of years ago. NASA's Hubble Space Telescope observed auroras on the moon generated by Ganymede's magnetic fields. NASA data suggest that Europa has a subsurface ocean.

Life as we know it is carbon-based and requires liquid water. Tara Regio is the yellowish area to left of center where researchers identified an abundance of sodium chloride.

Water still flows across the surface of Mars from time to time, NASA scientists said in 2015. Way presented his study this week at the. These similarities, and its proximity, have led Venus to be called Earth's "sister planet". This opens up all kinds of implications for exoplanets found in what is called the 'Venus Zone', which may in fact host liquid water and temperate climates.". These lava flow eruptions in what is now India may have even contributed to the dinosaurs’ extinction since they also are thought to have spewed large amounts of carbon dioxide and other noxious gases into Earth’s atmosphere. Those temperatures could have included a maximum of 122 degrees Fahrenheit and a minimum of 68 degrees Fahrenheit. "Venus currently has almost twice the solar radiation that we have at Earth. "Something happened on Venus where a huge amount of gas was released into the atmosphere and couldn't be re-absorbed by the rocks. Some paleontologists think that the giant impactor that is thought to have led to the extinction of the dinosaurs some 66 million years ago also triggered follow-on global volcanic eruptions. Europa has also been found to have plumes that eject water vapor and icy material. The terraforming of Venus is the hypothetical process of engineering the global environment of the planet Venus in such a way as to make it suitable for human habitation. By using our site, you acknowledge that you have read and understand our Privacy Policy Medical Xpress covers all medical research advances and health news, Tech Xplore covers the latest engineering, electronics and technology advances, Science X Network offers the most comprehensive sci-tech news coverage on the web. Three of the five scenarios studied by Way and Del Genio assumed the topography of Venus as we see it today and considered a deep ocean averaging 310 metres, a shallow layer of water averaging 10 metres and a small amount of water locked in the soil.

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