Earth and atmospheric sciences

Using new observations from the James Webb Space Telescope (JWST), astronomers from MIT determined that asteroid 2024 YR4 will not collide with the moon, reports Hannah Devlin for The Guardian. “[Asteroid] 2024 YR4 is exceedingly faint right now, reflecting about as much light as an almond at the distance of the moon,” explain Prof. Julien de Wit and Andy Rivkin PhD '91, who co-led the observations. “Webb is the only observatory that could hope to make these measurements, as it is the only one with the required sensitivity and stability combined with precise moving-target tracking needed to follow and study objects like this.”

Using the James Webb Space Telescope (JWST), astronomers from MIT and other institutions have determined that asteroid 2024 YR4 will not collide with the moon, reports Ashley Strickland for CNN. “Every time we observe an asteroid, we reduce the range of possible trajectories,” explains Prof. Julien de Wit. “In this case, the JWST observations both provided very precise positional measurements and significantly extended the time span over which the asteroid has been observed.”

Prof. Richard Teague speaks with CNN reporter Asuka Koda about how an international team of astronomers have “captured the most complete, high-resolution map of the cold gas at the center of the Milky Way, which contains the raw material from which stars and planets are made” using the Atacama Large Millimeter/submillimeter Array, or ALMA. “I think astronomy on this scale is really no longer about small individual people pushing in their labs, but about huge international collaborations,” says Teague. “And I think that’s what’s particularly impressive about this piece of work, just the scale of that collaboration that you need to make it happen.”

Research scientist Judah Cohen served as a panelist for the Boston Globe’s “The Reshaping of New England’s Seasons: What’s Happening to Our Weather?” event, reports Ken Mahan for The Boston Globe. Cohen and his fellow panelists discussed New England weather, sharing insights and answering questions from community members. 

USA Today reporter Dinah Voyles Pulver spotlights Research Scientist Judah Cohen’s research studying how weather systems and climate patterns are related to the increase in Arctic blasts and deep freezes this winter. 

Research Scientist Judah Cohen speaks with New York Times reporter Eric Niiler about his research studying “how global warming might also be causing colder winters in the eastern United States.” Cohen says “It’s weird what’s going on now in the stratosphere. These stretching events happen every winter, but just how the pattern is stuck is really remarkable.” 

Postdoctoral Associate Fatima Husain speaks with National Geographic reporter Theo Nicitopoulos about the various theories used to explain how living creature survived the Cryogenian era. “These surface settings could have enabled a diverse assemblage of life to persist and continue to evolve throughout the glaciations,” says Husain. “We keep learning more about how extreme the Cryogenian was… and that makes life persisting and diversifying dramatically after that, all the more amazing.” 

Writing for The Conversation, Research Scientist Judah Cohen and Mathew Barlow of UMass Lowell examine how the polar vortex and moisture from a warm Gulf of Mexico created a monster winter storm that brought freezing rain, sleet and snow to large parts of the U.S. “Some research suggests that even in a warming environment, cold events, while occurring less frequently, may still remain relatively severe in some locations. One factor may be increasing disruptions to the stratospheric polar vortex, which appear to be linked to the rapid warming of the Arctic with climate change,” they write. “A warmer environment also increases the likelihood that precipitation that would have fallen as snow in previous winters may now be more likely to fall as sleet and freezing rain.”

Prof. Emeritus Kerry Emanuel speaks with Washington Post reporters Ben Noll and Ruby Mellen about the 2025 hurricane season. “The thing that really powers the hurricane is how fast you can transfer heat from the ocean to the atmosphere. The bigger the temperature difference, the faster you can transfer heat. The faster you can transfer heat, the more powerful the hurricane can be,” says Emanuel. “This past summer, the sea surface temperatures across much of the tropical Atlantic were warmer than normal, which is part of what led people to predict that there would be a very busy season.” 

The American Academy of Sciences & Letters has awarded Prof. Richard Binzel the Barry Prize for his contributions to expanding “humanity’s knowledge of the cosmos,” reports Michael Nietzel for Forbes. The prize is “awarded to scholars at U.S. colleges and universities for distinguished intellectual achievements in the arts, sciences and learned professions,” writes Nietzel. 

Prof. Richard Binzel speaks with New Scientist reporter Alex Wilkins about his work inventing the Near-Earth Object Hazard Index (later renamed the Torino scale), asteroid hunting and the future of planetary defense. “Speaking very personally, as a scientist who’s been in the field for 50 years, who has largely been supported by public funds, I feel a moral responsibility to push forward the idea that, because we now have the capability to find any serious asteroid threat, we have a moral obligation to do it,” says Binzel of his work. “Otherwise, we are not doing our job as scientists.” 

In honor of the 25^th anniversary of the International Space Station (ISS), Earth.com reporter Derek Davis spotlights the contributions of a number of MIT-trained astronauts and engineers, who played pivotal roles in the ISS’ history. 

Researchers at MIT have uncovered remnants of “proto Earth,” which existed before a Mars-sized meteorite slammed into the Earth billions of years ago, reports Gayoung Lee for Gizmodo. The researchers “found an odd imbalance of potassium isotopes in ancient rock samples,” explains Lee. “Chemical analyses revealed the anomaly couldn’t have emerged from any known geological processes on modern Earth.” 

Using molecular evidence buried in rocks, researchers at MIT suggest that some of the Earth’s first living creatures are ancestors of the modern sea sponge, reports Ashley Fike for Vice. “The discovery suggests the earliest animals were simple, filter-feeding organisms that slowly cleaned the seas while the rest of the evolution was still figuring itself out,” says Fike. “These early sponges likely had no skeletons, nerves, or eyes – just porous bodies that absorbed water and nutrients. Yet they paved the way for everything that came next, from insects to mammals to us.” 

A new study by MIT researchers suggests sea sponges may have been the “first animals to inhabit the Earth,” reports Maria Azzura Volpe for Newsweek. “In their work, the researchers linked so-called ‘chemical fossils’ found in ancient rocks to the ancestors of a class of modern-day sea sponges known as demosponges,” explains Volpe. “These chemical fossils—the molecular remnants of once-living organisms that have been buried, transformed, and preserved in sediment over time—were discovered in rocks that date back to more than 541 million years ago, during the Ediacaran Period.”