Black holes

Postdoctoral Associate Rohan Naidu joins John Batchelor and David Livingston, hosts of the “Hotel Mars” podcast, to discuss his research discovering black hole stars from little red dots using NASA’s James Webb Space Telescope. “When we first discovered the little red dots, we assumed that red means dust, and so the idea was that the little red dots are the kind of black holes that we see in our backyard,” says Naidu. “But now we have this paradigm shift where we are realizing that red does not mean dust. Red could mean that you have this black hole star kind of object where all the blue light is being soaked up in this dense star-like cocoon.” 

Prof. Erin Kara speaks to NPR’s Ari Daniel about how the fastest star ever observed in the galaxy, located next to the Sagittarius A* black hole, experiences how space and time are distorted by the black hole. “This is a really exciting result," says Kara. "It kind of sets the stage in the next decade to make these kind of unprecedented measurements of black holes.” 

Popular Science’s Andrew Paul spotlights how MIT astronomers have identified a black hole star (MoM-BH*-1), a gigantic, dense gas cloud fueled by a central black hole, discovered in an image of a large red dot on NASA’s James Webb Space Telescope (JWST). “The groundbreaking realization and newest addition to the cosmic catalogue wouldn’t have been possible without the JWST, whose smallest discoveries have massive ramifications,” writes Paul. “Even something as tiny as a 100-million-year-old red dot.” 

Using NASA’s James Webb Space Telescope (JWST), MIT researchers have discovered a black hole star, MoM-BH*‑1, the earliest example of a black hole in the universe, writes Mashable’s Elisha Sauers. “We argue that Black Hole Stars may be powering all of JWST's Little Red Dots that are found almost everywhere in the early Universe,” says Postdoctoral Associate Rohan Naidu. “Which is to say, this channel of making massive black holes must be very common, to the point where every massive black hole (like the Milky Way's) may have gone through this phase.” 

Postdoctoral Associate Rohan Naidu speaks to The Guardian’s Ian Sample about his team’s research discovering a black hole star, a cosmic object the size of the entire solar system. “They [black hole stars] may govern when stars are able to form and when they cease forming, setting the course for everything that follows from star formation: the birth of planets, the rise of life, the emergence of species that may one day piece together this entire history,” says Naidu.  

Forbes’ “50 Over 50” list spotlights four MIT faculty leading innovation in science and technology: Prof. Paula Hammond, dean of the MIT School of Engineering; Prof. Dina Katabi; Prof. Nergis Mavalvala, dean of the MIT School of Science; and Aude Oliva, director of MIT-IBM Computing Research Lab. The 50 “science and technology standouts on this list are advancing how we use AI, fight osteoporosis and deploy clean energy.”  

MIT researchers have discovered space matter that has been ‘missing’ since the 1990s using Fast Radio Bursts, individual flashes of radio waves traveling through space and coming from the distant universe, reports WCVB 5’s Cindy Fitzgibbon. “The takeaway of the study is that by discovering the distribution of the missing matter around galaxies, we have found evidence for strong activities in galaxies,” says graduate student Haochen Wang, a co-author on the study. “In other words, galaxies are busier and messier than we thought.” 

Prof. Salvatore Vitale and graduate student Cailin Plunkett join John Batchelor and David Livingston, hosts of the Hotel Mars podcast, to discuss their discovery that 14% of black holes were created from the merger of two smaller ones, and their goal to use gravitational wave detectors to uncover the origins of the black hole in the Milky Way. “In ten years [with added gravitational wave technology and observatories], we’ll go from seeing the first gravitational wave ever to seeing them irrespective of where they happen in the universe—which would of course, be fantastic,” says Vitale.  

New Scientist’s Jacklin Kwan highlights Prof. Christoph Kehle’s work demonstrating that extremal black holes, a variety of black hole that has zero temperature, could exist. “Extremal black holes were thought of as an idealised, unattainable limit: something you could write down as a solution, but which could never be reached [through any real physical] process, but we proved that wrong,” says Kehle. 

In a video for PBS Nova, alumna Elba Alonso-Monsalve PhD ‘26 explains the definition of primordial black holes (PBHs), and how dark matter may be formed from them. “Think like the mass of an asteroid but packed into the volume of a single atom, and these [PBHs] would be floating around our universe, maybe even our own solar system,” says Alonso-Monsalve. “There could be enough of these PBHs lurking around to make up all of the dark matter, and they would be tiny enough to be hard to spot.” 

By studying ‘smears’ in fast radio bursts, fleeting flashes of radiation, MIT researchers discovered diffuse clouds of baryonic gas may contain the missing ordinary matter in the universe, writes Gizmodo’s Gayoung Lee. “These diffuse clouds may be flung outside galaxies through black hole jets,” Lee explains. 

After analyzing data from the LIGO, Virgo and KAGRA gravitational wave detectors, MIT researchers have found that 14% of black holes may be second-generation, formed by the merger of two smaller black holes, writes Gayoung Lee for Gizmodo. The scientists “created an analytic model to capture the kind of wobble that would have emerged from second-generation black holes. Around 14% of merging black holes followed this pattern, and the second-generation black holes identified had a very specific range of masses, at around 20 solar masses or 40 solar masses and above,” Lee explains.  

Prof. David Kaiser joins GBH “Particles of Thought” podcast host Dr. Hakeem Oluseyi to discuss his hunt for primordial black holes. “It’s a lot easier to find stuff coming off of a very bright, hot source, than a cold, dim one. So, the Hawking temperature of a black hole that has the same mass as our sun, or a little bigger would be so cold we would literally never be able to measure [its] radiation,” says Kaiser. “You’ll never see it [Hawking Radiation] from stellar collapse black holes, you’ll never see it from supermassive black holes, or even colder. The only hope to ever see it would be a smaller mass black hole.”

Scientific American reporter Clara Moskowitz spotlights a new study by Prof. Seth Lloyd that explores the feasibility of black holes sending information back in time. In the study, Lloyd and his colleagues calculate how much information can be sent backward via closed timelike curves, intensely bending, rotating space found around spinning black holes. “Spacetime can curve around so much that you can be innocently going forward in time and then you meet yourself in the past,” says Lloyd. 

Prof. David Kaiser and graduate student Alexandra Klipfel speak with New York Times reporter Dennis Overbye about their theory that a neutrino detected zipping through the Mediterranean Sea in February 2023 may have come from an exploding primordial black hole. Kaiser and Klipfel "concluded that if primordial black holes were the explanation for long-sought dark matter, scientists should expect about 40 black-hole explosions to occur each year in every cubic light-year near the Milky Way,” Overbye notes.