More living planets in universe than thought: Study

There may be more living planets in the universe than previously thought, according to a study.

Geoscientists at Pennsylvania State University in the United States suggest that flat tectonics – long badumes a requirement for suitable conditions for life – are In search of a living planets or life on other planets, scientists look for biosignatures of atmospheric carbon dioxide.

On Earth, atmospheric carbon dioxide increases surface heat through the greenhouse effect, according to the research published in the journal Astrobiology.

"Volcanism releases gases into the atmosphere, and then through weathering, carbon dioxide is pulled from the atmosphere and sequestered into surface rocks and sediment," said Bradford Foley, an badistant professor of geosciences at Penn State.

"Balancing those two processes keeps carbon dioxide at a certain level in the atmosphere, which is really important for

Subduction, in which one plate is one of the most important of these, "said Foley.

On these planets, the crust is, the planets, known as the planets, the planets, the planets, the planets, the crust is These are the two most important things in the world, they are thought to be more widespread than planets with flat tectonics. In fact, Earth is the only planet with confirmed tectonic plates

Foley and Andrew Smye, an badistant professor at Penn State, created a computer model of the life-cycle of a planet.

They looked at how much heat

After construction of simulations to vary the planet's size and chemical composition, the researchers found that stagnant lid planets can sustain conditions for liquid water for trillions of years.

At the highest extreme, they could sustain life for up to four trillion years, roughly Earth's lifespan to date, they said.

"There's a sweet spot range where A planet is releasing enough carbon dioxide to keep the planet going, but not so much that the weathering can not pull carbon dioxide out of the atmosphere and keep the climate temperate, "he said.

According to the researchers' m odel, the presence and amount of heat-producing elements were far better indicators for a planet's potential to sustain life.