Space and astronomy news
Is there something strange and alien confined deep inside the Earth? Is it trying to break free and escape into the heavens? No, of course not.
But in a new soundscape from the ESA, it sure sounds like it.
Continue reading “This is What it Sounds Like When the Earth’s Poles Flip”
Saturn’s moon, Titan, is an anomaly among moons. No other moons have surface liquids, and aside from Earth, it’s the only other Solar System object with liquids on its surface. However, since Titan is so cold, the liquids are hydrocarbons, not water. Titan’s water is all frozen into a surface layer of ice.
New research suggests that under the surface, Titan is hiding another anomaly: a thick crust of methane.
Continue reading “Titan May Have a Methane Crust 10 Km Thick”
The massive South Pole-Aitken (SPA) basin is one of the Moon’s dominant features, though it’s not visible from Earth. It’s on the lunar far side, and only visible to spacecraft. It’s one of the largest impact features in the Solar System, and there are many outstanding questions about it. What type of impactor created it? Where did the ejected material end up? Is it feasible or worthwhile to explore it?
But the biggest question could be: how old is it?
Continue reading “Scientists Determine the Age of the Moon’s Oldest and Largest Impact Basin”
The ESA’s Mars Express orbiter captured an image of the remains of a vast ancient lake on Mars. The remnant lake bed has been weathered and altered by the passing of billions of years. In the planet’s distant past, scientists say, it held enough water to fill Earth’s Caspian Sea almost three times over.
Continue reading “An Ancient Martian Lake Was Larger Than Any Lake on Earth”
Venus is sometimes called Earth’s sister planet because of their shared physical, geological, and atmospheric features. Scientists have discovered something new about Venus’ geology that’s reminding us of the similarities between the two planets. We have to look deep inside both planets to see what the researchers found.
Continue reading “Scientists Discover New Geological Link Between Earth and Venus”
Mercury, the closest planet to our Sun, is also one of the least understood in the Solar System. On the one hand, it is similar in composition to Earth and the other rocky planets, consisting of silicate minerals and metals differentiated between a silicate crust and mantle and an iron-nickel core. But unlike the other rocky planets, Mercury’s core makes up a much larger part of its mass fraction. Mercury also has a mysteriously persistent magnetic field that scientists still cannot explain. In this respect, Mercury is also one of the most interesting planets in the Solar System.
But according to new research, Mercury could be much more interesting than previously thought. Based on new simulations of Mercury’s early evolution, a team of Chinese and Belgian geoscientists found evidence that Mercury may have a layer of solid diamond beneath its crust. According to their simulations, this layer is 15 km (9 mi) thick sandwiched between the core and the mantle hundreds of miles beneath the surface. While this makes the diamonds inaccessible (for now, at least), these findings could have implications for theories about the formation and evolution of rocky planets.
Continue reading “Mercury Could be Housing a Megafortune Worth of Diamonds!”
Human visitors to Mars need somewhere to shelter from the radiation, temperature swings, and dust storms that plague the planet. If the planet is anything like Earth or the Moon, it may have large underground lava tubes that could house shelters. Collapsed sections of lava tubes, called skylights, could provide access to these subterranean refuges.
Does this hole on Mars lead to a larger underground cavern?
Continue reading “What’s Under This Hole on the Surface of Mars?”
The Search for Life in our Solar System leads seekers to strange places. From our Earthbound viewpoint, an ice-covered moon orbiting a gas giant far from the Sun can seem like a strange place to search for life. But underneath all that ice sits a vast ocean. Despite the huge distance between the moon and the Sun and despite the thick ice cap, the water is warm.
Of course, we’re talking about Enceladus, and its warm, salty ocean—so similar to Earth’s in some respects—takes some of the strangeness away.
Continue reading “Enceladus’s Fault Lines are Responsible for its Plumes”
Rosalind Franklin, the ESA’s Mars rover, is scheduled to launch no sooner than 2028. Its destination is Oxia Planum, a wide clay-bearing plain to the east of Chryse Planitia. Oxia Planum contains terrains that date back to Mars’ Noachian Period, when there may have been abundant surface water, a key factor in the rover’s mission.
Continue reading “The ESA’s Mars Rover Gets a New Map”
Even with all we’ve learned about Mars in recent years, it doesn’t stack up against all we still don’t know and all we hope to find out. We know that Mars was once warm and wet, a conclusion that was less certain a couple of decades ago. Now, scientists are working on uncovering the details of Mars’s ancient water.
New research shows that the Gale Crater, the landing spot for NASA’s MSL Curiosity, held water for a longer time than scientists thought.
Continue reading “Mars’ Gale Crater was Filled with Water for Much Longer Than Anyone Thought”