Satellites

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. 

A study by researchers at MIT has found that high levels of greenhouse gas emissions in the atmosphere is impacting the satellite orbits that typically force objects back to Earth, leading to an increased amount of space junk, reports Sachi Kitajima Mulkey for The New York Times. “[W]e’re losing this cleaning force that we rely on” says William Parker PhD '25. 

Prof. Kerri Cahoy speaks with New York Times reporter Katrina Miller about the risks to satellites during geomagnetic storms. Cahoy explains that satellites in low-Earth orbit can experience anomalies, like signal dropouts and reboots. But molecules in Earth’s atmosphere and the strength of its magnetic field can offer some natural protection for satellites closest to the ground.  

Prof. Paulo Lozano has received funding from NASA’s University SmallSat Technology Partnership (USTP) to “explore integration of tiny electronic thrusters – a propulsion system using electrical power to propel spacecraft – onto satellites, reports Robin Roenker for USA Today. “We have many ideas (for application),” says Lozano. “One is to send tens or even hundreds of these small satellites to the asteroid belt to help study and characterize the asteroids’ surface structures.” 

Prof. Richard Binzel spoke at the Europlanet Science Congress (EPSC) about efforts to create a system that could help deflect deadly asteroids away from Earth, reports Alex Wilkins for New Scientist. “If we had to deal with an actual asteroid threat,” says Binzel, “we would certainly want to know these properties, like the spin or tumbling state [of an asteroid].”

Writing for Nature, Prof. Danielle Wood makes the case that both public and commercial satellite missions are needed to understand and protect the environment. “Although commercial companies have much to offer, the public sector must still lead the design, operation and management of satellites, and remain committed to tracking changes on Earth comprehensively, openly and transparently,” Wood writes. 

Graduate student Megan Masterson speaks with CBS Eye on the World hosts John Batchelor and David Livingston about her research on tidal disruption events. “These events were first theorized in the 1970s, first discovered in the 1990s with x-ray wavelengths,” explains Masterson. “But today, what James Webb is doing is allowing us to detect these events in the infrared band. And so, what we’re seeing here are previously dormant black holes that were kind of lying at the center for their galaxies doing pretty much nothing suddenly become active.” 

Prof. Kerri Cahoy takes Bloomberg Wall Street Week host David Westin on an out-of-this-world journey into how a college internship inspired her research on space and satellites, why she loves the challenge of satellite engineering, and what she sees in store for the future of the field. “There is a lot of joy and pride and skill building and challenge in the field,” says Cahoy. “That’s one of the reasons why I love it." 

Prof. Kerri Cahoy speaks with Bloomberg Wall Street Week reporter David Westin about advancements in low earth satellites. “It is very exciting to see it growing like this," says Cahoy. "To see remote access without terrestrial infrastructure needed, that is a very interesting and exciting growth area."