Satellites

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.” 

Research Scientist Giovanni Lavezzi speaks to Scientific American’s Jonathan O’Callaghan about managing the number of satellites in Earth’s orbit. “So far [the amount] seems manageable” through active coordination, says Lavezzi. “The problem is how much can we push.” 

Prof. Danielle Wood speaks to the Scientific American’s Tom Metcalfe about how the current models of space travel, that have created trash and debris in Earth’s atmosphere and orbit, are unsustainable. “Sustainability in space means that we are able to leave to future generations something like the natural state of the Earth, the moon and the solar system,” says Wood. 

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.  

Prof. Danielle Wood joins Edgar B. Herwick III, host of GBH’s “The Curiosity Desk,” to discuss the growing problems posed by space junk, and how space technology helps support our critical infrastructure. “Technology from space helps make life safer on Earth, supports our weather forecasting [and] our daily transportation. All the technology that lets us get deliveries and Uber—that's all coming from space,” says Wood. “We definitely need space to be safe—to keep our lives safe.” 

Prof. Richard Binzel discusses Apophis, an asteroid roughly 340-meters in diameter, set to pass within 32,000 kilometers of Earth on April 13, 2029 with Scientific American’s Andrew Jones. Apophis’s close approach in 2029 will offer “a once-per-millennium natural experiment,” says Binzel.  

Associate Prof. Areg Danagoulian has developed a satellite equipped with specialized neutron detectors that he hopes will fill the gaps in the 1967 Outer Space Treaty, which bans nuclear weapons in space without a way to verify satellites are not carrying them. “[I]f the concept proves to be practical enough to someone in charge, it could finally give us a way to verify that there really aren’t any nukes floating precariously over our heads,” writes Luis Prada for Vice. 

Financial Times reporter Michael Peel features CubeSat, a proposed satellite sensor by Associate Prof. Areg Danagoulian, able to identify hidden nuclear weapons in space.  “If one state suspects another of placing a nuclear weapon in orbit, the absence of a verification mechanism makes the crisis harder to manage,” says Danagoulian. “If a bad-faith actor knows that their attempt will be discovered via inspection, they will be more likely to decide it's not worth pursuing.” 

Gizmodo’s Ellyn Lapointe reports on a new paper from Associate Prof. Areg Danagoulian, which offers a  solution to verifying satellites aren’t carrying hidden nuclear weapons in space: an inspector satellite able to indicate the presence of uranium from neutron signals via sensor technology. Danagoulian’s proposal seeks to fill the gaps of The Outer Space Treaty (OST), established in 1967 and signed by 118 countries to ban nuclear weapons in space, which “has always lacked robust means of verification for space-based nuclear threats,” says Danagoulian. 

In a new study, Associate Prof. Areg Danagoulian proposes a satellite-based sensor that could monitor suspicious craft for signs of nuclear activity in space with 99% accuracy, reports Andrew Paul for Popular Science. “You can fake intelligence, but you can’t fake physics,” says Danagoulian. “The goal right now is to get national labs to use this work for their own research, and to get policymakers to seriously consider this technology as a potential part of national technical means.” 

Scientific American’s Adam Kovac highlights a paper by Associate Prof. Areg Danagoulian that proposes a satellite to detect and police hidden nuclear weapons in space by detecting spallation, the ejection of neutrons, from the bombardment of high energy protons, and uranium atoms. “If you detect those neutrons, that itself can be a telltale sign that there is an unusual amount of uranium on the satellite, and it’s most likely to be a nuclear weapon,” Danagoulian says.

Prof. Paul Lozano and alumna Amelia Bruno PhD ‘25 join John Batchelor, host of the "Hotel Mars” podcast, to discuss their work developing a new propulsion system that could improve small satellite mobility. “This technology [electrospray thrusters] came from our own research on how to miniaturize propulsion for small satellites,” says Lozano. “There is a big need to actually provide these little satellites with mobility, so that we can actually explore space and use it more effectively.” 

MIT engineers have developed a “two-in-one propulsion system that can fuel both traditional chemical thrusters and electrical thrusters, combining speed and power with slower, more precise maneuverability for small satellites,” reports Passant Rabie for Gizmodo. “The new propulsion system would allow small satellites to carry both thrusters using the same propellant, opening the door for cheaper, smaller spacecraft to explore beyond Earth orbit,” Rabie explains.