MIT astronomers have discovered an exoplanet with a density similar to cotton candy, reports Newsweek’s Jess Thomson. The planet, “named WASP-193b, is the second-least dense exoplanet ever found, with a density of around 0.059 grams per cubic centimeter, or 3.68 pounds per cubic foot,” Thomson explains. “This makes it about 7 times less dense than our neighboring planet Jupiter, despite being 50 percent larger in size, and about 1 percent the density of our own planet.”
An international team of astronomers, including scientists from MIT, discovered an exoplanet with an “exceedingly low density for its size,” reports Marcia Dunn for the Associated Press. The planet “is ideal for studying unconventional planetary formation and evolution,” explains Dunn.
BBC Science Focus reporter Alex Hughes spotlights a new study by MIT scientists that suggests more heavy snowfall and rain linked to climate change could increasingly contribute to earthquakes worldwide. “The researchers made these conclusions based on how weather patterns in northern Japan have seemingly contributed to a new 'swarm' of earthquakes,” writes Hughes, “a pattern of multiple, ongoing quakes – that is thought to have begun in 2020.”
A new study conducted by MIT researchers suggests “heavy snowfall could be a factor in triggering swarms of earthquakes,” reports Evan Bush for NBC News. "Those big snowfall events seem to correlate well with the start of these big earthquake swarms," says Prof. William Frank. "We shouldn’t forget the climate itself can also play a role in changing the stress state at depth where earthquakes are happening."
Scientists from MIT and the University of Oxford have discovered that an ancient sequence of rocks found in Isua, Greenland have “a magnetic field strength of at least 15 microteslas or higher compared to the modern magnetic field of 30 microteslas,” reports David Bressan for Forbes. “These results provide the oldest estimate of the strength of Earth’s magnetic field derived from whole rock samples,” writes Bressan.
Researchers from MIT and elsewhere have found that a sequence of rocks from the Isua Supracrustal Belt in Greenland contain “an ironclad record of the early Earth’s magnetic field,” reports Keith Cooper for Space.com. “The new results from the Greenland rocks are considered more reliable because, for the first time, they are based on entire iron-bearing rocks (rather than individual mineral crystals) to derive the primordial field strength,” explains Cooper. “Therefore, the sample offers the first solid measure of not only the strength of Earth's ancient magnetic field, but also of the timing of when the magnetic field originally appeared.”
Prof. William Frank speaks with New York Times reporter Katrina Miller about the recent earthquake in the Northeast, and whether the event was caused by motion between the Earth’s tectonic plates. “It’s not quite as obvious, because there is no tectonic plate boundary that is active,” explains Frank. He noted that fault lines from past tectonic plate activity are located around the world, explaining that “some of these faults can still be storing stress and be closer to failure, and it can just require a little bit more to push it over the edge.”
Paris Smalls PhD '22 founded Eden GeoPower – a startup that uses “a new kind of fracking that uses jolts of electricity, rather than blasts of water, to shatter underground rocks,” reports Hiawatha Bray for The Boston Globe. “While the process can work for extracting oil and natural gas, Smalls mainly wants to tap into a squeaky-clean energy source — the natural heat of the planet’s crust,” writes Bray.
Researchers from MIT and elsewhere have proposed a new method to look for primordial black holes (PMBs), reports Jackie Appel for Popular Mechanics. “If there are as many as the team thinks there should be, and they interact with gravity as we expect them to, they should be zooming around in a way that some of them should pass close by various objects in our solar system – including Earth,” explains Appel. “And if that happens, it should actually be enough to disturb the natural orbits of these objects in a way that we can measure.”
Forbes contributor Jamie Carter spotlights a new study co-authored by MIT scientists that suggests, “the absence of carbon dioxide in a rocky planet’s atmosphere—relative to others in the same star system—may indicate the presence of liquid water on the planet’s surface.”
Gizmodo reporter George Dvorsky spotlights the Venus Life Finder mission, developed by researchers from MIT and Rocket Lab, which will be launching no earlier than December 2024. “The mission will send a small probe, equipped with a single science instrument, to analyze organic molecules and potential signs of life in the Venusian atmosphere,” writes Dvorsky.
Postdoctoral associate Milan Klöwer shares how large conferences can impact air travel and personal carbon footprints, reports Sydney Johnson for KQED. “Flying is one of the sectors where there are enormous inequalities,” says Klöwer. “The people that earn the most [money] fly the most, and therefore have personal carbon footprints that are thousands of times larger than the poorest people on the planet. There is a responsibility for people to understand that problem about how they are personally emitting.”
Prof. Kerry Emanuel speaks with Living on Earth host Jenni Doering about the future of extreme weather forecasting. “We have to do a much better job projecting long term risk, and how that's changing as the climate changes so that people can make intelligent decisions about where they're going to live, what they're going to build, and so on,” says Emanuel. “We need better models, we need better computers, so that we can resolve the atmosphere better, we need to make better measurements of the ocean below the surface, that's really tough to do.”
MIT researchers are leading three missions over the next decade to characterize Venus’ atmosphere for habitability, reports Bruce Dorminey for Forbes. “Understanding Venus is key to understanding exo-earths,” writes Dorminey.
MIT researchers have developed a new satellite observation technique that can gauge how fast rivers flowed on Mars billions of years ago and how fast they currently flow on Titan, Saturn’s largest moon, reports Talia Lissauer for The Boston Globe. “We can use these other worlds to help us understand what keeps planetary climate stable, or in some cases, what allows planetary climate to change really drastically over time like on Mars,” says Prof. Taylor Perron.