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Europa, the fourth largest of Jupiter’s moons, has high odds of being habitable. Past studies suggest that an ocean of liquid water lurks beneath Europa’s 15-mile-thick frozen crust. This extraterrestrial ocean contains salts that prevent water from turning into ice, which makes it ideal for life. There is evidence of recent geological formations within Europa’s crust, including small, dark, dome-like features called lenticulae. Discovered by the National Aeronautics and Space Administration (NASA), lenticulae are thought to form above bodies of saline water half a mile to three miles beneath the surface. To learn more about lenticulae, the researchers developed numerical simulations using images taken using NASA’s Galileo spacecraft, which explored Jupiter and its moons between the 1990s and 2000s. The spacecraft, launched in 1989, spotted lenticulae spattered across Europa’s surface. ....
China landed a probe on a planet other than Earth for the first time on May 15. It has now become the second country, after the US, to operate a rover on the Red planet.The ....
Data collected on the more than 4,000 exoplanets found so far has revealed a very interesting pattern – some of them seem to be shrinking in size. In fact, there are very few exoplanets that are between 1.5 and 2 times larger than Earth that are in close proximity of their host stars (this is called the small planet radius gap). According to a new study, it is quite possible that exoplanets located close to their stars were much larger in size but after billions of years they ended up shrinking. Trevor David, who is an astrophysicist at the Flatiron Institute in New York City, said, “The overarching point is that planets are not the static spheres of rocks and gas we sometimes tend to think of them as.” ....