Geologists love fieldwork. They love getting their specialized hammers and chisels into seams in the rock, exposing unweathered surfaces and teasing out the rock’s secrets. Mars would be the ultimate field trip for many of them, but sadly, that’s not possible.
Instead, we’ve sent the Perseverance rover on the field trip. But if a geologist were along for the ride, what would it look like to them?
Continue reading “What a Geologist Sees When They Look at Perseverance’s Landing Site”
Here on Earth, geologists seek out deep channels into Earth’s rock, carved over the ages by flowing water. The exposed rock walls are like a visual timeline of a region’s geological history. On Mars, the surface water is long gone. But it flowed long enough to expose layers of rock just like here on Earth.
One of those water-exposed areas on Mars is Mawrth Vallis, an outflow channel that feeds into the Chryse Basin.
Continue reading “This is Mawrth Vallis on Mars, and it’s Positively Bursting with Evidence of Past Water Action on Mars”
Northern Canada has been keeping a secret from the rest of the world. It’s home to “Resurrection,” a tectonic plate that has been much theorized but never found until now. A team of researchers used what amounts to a CAT scan of northern Canada and the mantle underneath it to find the missing plate.
Finding it could lead to better hazard prediction and also to finding mineral and hydrocarbon deposits. But better than that, it’s helping scientists piece together Earth’s history.
Continue reading “Geologists Have Found the Earth’s Missing Tectonic Plate”
Scientists are getting better at understanding exoplanets. We now know that they’re plentiful, and that they can even orbit dead white dwarf stars. Researchers are also getting better at understanding how they form, and what they’re made of.
A new study says that some carbon-rich exoplanets could be made of silica, and even diamonds, under the right circumstances.
Continue reading “There Could Be Carbon-Rich Exoplanets Made Of Diamonds”
It takes oxygen to make iron rust. So when scientists discovered hematite spread widely through lunar high latitudes, they were surprised. How did that happen?
A new study suggests that oxygen from Earth could be playing a role in rusting the Moon.
Continue reading “Earth’s Oxygen Could be Making the Moon Rust”
Ganymede’s surface is a bit of a puzzle for planetary scientists. About two-thirds of its surface is covered in lighter terrain, while the remainder is darker. Both types of terrain are ancient, with the lighter portion being slightly younger. The two types of terrain are spread around the moon, and the darker terrain contains concurrent furrows.
For the most part, scientists think that the furrows were caused by tectonic activity, possibly related to tidal heating as the moon went through unstable orbital resonances in the past.
But a new study says that a massive impact might be responsible for all those furrows.
Continue reading “A Huge Ring-Like Structure on Ganymede Might be the Result of an Enormous Impact”
We all know what water is. And what rock is. The difference is crystal clear. Well, here on Earth it is.
But on other worlds? The difference might not be so clear.
Continue reading “Deep Down in Ocean Worlds, it’s Difficult to Tell Where the Oceans End and the Rock Begins”
The Moon is easily the most well-studied object in the Solar System, (other than Earth, of course.) But it still holds some puzzles for scientists. Why, for instance, is one side of the Moon so different from the other?
Continue reading “Do We Now Understand Why the Moon’s Near and Far Sides Look So Dramatically Different?”
There are bad days, and then there are really bad days. 65 million years ago, life on Earth – especially if you were a dinosaur – experienced the worst possible bad day, as a giant meteor came crashing down to the surface of our planet, unleashing an inferno followed by decades of nuclear winter. And the worst part? It didn’t have to be so bad.
Continue reading “The dinosaur killing asteroid hit the Earth at the most devastating possible angle”
The prospect of mining asteroids and the Moon is on a lot of peoples’ minds lately. Maybe it’s all the growth that’s happened in the commercial aerospace industry in the past few decades. Or perhaps it’s because of Trump’s recent executive order to allow for asteroid and lunar mining. Either way, there is no shortage of entrepreneurs and futurists who can’t wait to start prospecting and harvest the natural bounty of space!
Coincidentally enough, future lunar miners now have a complete map of the lunar surface, which was created by the US Geological Society’s (USGS) Astrogeology Science Center, in collaboration with NASA and the Lunar Planetary Institute (LPI). This map shows the distribution and classification of the mineral deposits on the Moon’s surface, effectively letting us know what its familiar patchwork of light and dark patches the really are.
Continue reading “Want to Mine the Moon? Here’s a Detailed Map of all its Minerals”