Nasa scientists have found a planet they believe is covered by active volcanoes. In a study published in the journal Nature, scientists said they found the planet, which is the size of Earth about 90 light-years from Earth in the Crater constellation. They called it LP 791-18 d and one part is constantly scorched by sunlight, while the other is always in darkness. “The day side would probably be too hot for liquid water to exist on the surface. But the amount of volcanic activity we suspect occurs all over the planet could sustain an atmosphere, which may allow water to condense on the night side,” Björn Benneke, one of the astronomers who studied the planet, told NASA’s Jet Propulsion Laboratory. Sign up to our free Indy100 weekly newsletter The LP 791-18 system contains at least two other planets, called LP 791-18 b and c. The latter is two-and-a-half times larger than Earth and more than seven times its mass. It also affects the orbit of LP 791-18 d, making it travel along an elliptical path around the system’s sun. That path means LP 791-18 d is deformed every time it completes an orbit. “These deformations can create enough internal friction to substantially heat the planet’s interior and produce volcanic activity at its surface,” according to NASA. “A big question in astrobiology, the field that broadly studies the origins of life on Earth and beyond, is if tectonic or volcanic activity is necessary for life,” study co-author Jessie Christiansen said. “In addition to potentially providing an atmosphere, these processes could churn up materials that would otherwise sink down and get trapped in the crust, including those we think are important for life, like carbon.” Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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Nasa is sending a rocket to a metallic asteroid between Mars and Jupiter in the hope of finding diamonds and rubies. The mission, which is set to launch on Friday 13 October, will involve visiting the mysterious metallic asteroid 16 Psyche, which sits in an asteroid belt between the two planets. The journey will take seven years for Falcon Heavy, a craft made by Elon Musk’s space exploration firm SpaceX. It was due to take off on Thursday, but the launch was postponed because of bad weather. Nasa Administrator Bill Nelson said: “We are launching a billion dollar spacecraft all the way beyond Mars and close to Jupiter and it’s going to snuggle up next to a metallic asteroid, and we are going to learn something about that metallic asteroid. “I hope we might find diamonds and rubies on that asteroid. “Everything is a new discovery, and we are glimpsing more of the development of this magnificent thing we call the universe.” Falcon Heavy takes off on its four-billion-mile journey at 10.19am in Florida, from the Kennedy Space Center. That is 3.16pm UK time. By May 2026, it will pass by Mars and use the planet’s gravitational force to slingshot itself toward the asteroid. Four years later, it will reach its destination. There, it will find a rock made up of iron and nickel, scientists believe. But they also think it could contain precious metals and gems. 16 Psyche has puzzled astronomers since it was discovered by Italian astronomer Annibale de Gasparis in 1852. In the 1980s, radar readings found that it was made of metal, leading scientists to speculate that the 130-mile boulder lost its outer shell by colliding with other asteroids. The spacecraft will spend about 26 months in orbit, taking images of the asteroid to get a clearer picture of its topography, surface features, gravity and magnetism. The asteroid will not be mined – but space agencies might just start taking more notice if they find its one massive diamond. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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