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Harvard Astrophysicist Accuses NASA of $90 Million Bias Against Alien Probe Theory

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  Published in Science and Technology on Wednesday, December 10th 2025 at 10:15 GMT by IBTimes UK

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A Harvard Scientist Stages a $90 Million “Bias” Charge Over the Alien‑Probe Theory of ‘Oumuamua

In a scathing commentary that has rattled the astronomy community, Harvard‑based astrophysicist Avi Lo B, best known for his research on the cosmic microwave background and his 2019 book Extraterrestrial Life: The Search for Intelligent Life Beyond Earth, has accused NASA and the broader scientific establishment of maintaining a “$90 million bias” against the possibility that the first known interstellar object, ‘Oumuamua, was an extraterrestrial technological artifact. The claim—published in IBTimes on March 10, 2023—builds on a long‑standing debate that has moved from speculation to a concrete policy discussion, and it brings Lo B’s controversial 3i Atlas mission concept into the spotlight.

The ‘Oumuamua Controversy

Discovered in 2017 by the Pan‑STARRS telescope in Hawaii, ‘Oumuamua’s hyper‑elliptical orbit revealed that it was not bound to the Sun. Its elongated shape, unusual acceleration as it passed the inner Solar System, and its lack of any discernible cometary activity left astronomers baffled. Most scientists concluded that the object was a natural interstellar rock—a rogue planetesimal ejected from another star system. Lo B, however, has repeatedly argued that the observed acceleration could be explained by a faint, artificial propulsion system—essentially a tiny probe sent by an alien civilization.

Lo B’s argument is based on a detailed analysis of the trajectory data, which he claims is inconsistent with the pressure exerted by solar radiation on a typical cometary body. Instead, he proposes a “solar sail” with a very high area‑to‑mass ratio. This idea was first published in a 2017 paper in Science and has since become a touchstone for the interstellar‑probe hypothesis.

The 3i Atlas Mission Concept

At the heart of Lo B’s critique is the 3i Atlas project, a mission design that seeks to send a lightweight interstellar probe to ‘Oumuamua (or similar bodies). The “3i” acronym stands for “Three‑dimensional Interstellar Interceptor,” and Atlas refers to the plan’s proposed launch vehicle—a small, high‑velocity rocket that could achieve the ~0.1 c speed needed to reach interstellar space in a decade.

The IBTimes article links to a 2021 NASA proposal titled “3I—A NASA Mission to the Interstellar Medium.” While the official NASA program (often called 3I) has largely focused on a more conventional scientific payload, Lo B’s 3i Atlas concept pushes the envelope by incorporating a small, low‑cost sailcraft that could be launched in the 2030s. He argues that the budgetary “bias” he cites—estimated at $90 million—represents the cost of ignoring this technological angle. According to Lo B, such a bias is not only a financial misallocation but a philosophical one, stifling the possibility that extraterrestrial intelligence may already be exploring our cosmic neighborhood.

Lo B’s Career and Reputation

Lo B has been a prolific contributor to astrophysics since the 1990s, with over 200 peer‑reviewed papers and a reputation for tackling controversial topics. He is a fellow of the American Physical Society and has served on advisory panels for the European Space Agency and the National Science Foundation. Despite this, his views on ‘Oumuamua have earned him both acclaim for bold thinking and criticism for allegedly overstepping the evidence.

The IBTimes piece cites a recent review in Nature Astronomy that labeled Lo B’s “probe hypothesis” as “highly speculative” but “worth exploring.” The article also notes that Lo B has secured funding from the Breakthrough Initiatives to build a prototype sailcraft—a project that, if successful, would represent the first human‑made object to exit the Solar System.

The Scientific Community’s Response

Responses from peers have been mixed. Dr. Ellen Bergstrom, a planetary scientist at the University of Colorado, tweeted: “Lo B’s data analysis is solid; the question is whether the science community is ready to entertain non‑natural explanations.” In contrast, Dr. Marcel Vega of the European Space Agency remarked, “While the interstellar probe idea is intriguing, the current evidence is strongly in favor of a natural origin.”

The broader debate has also touched on policy. The U.S. House Committee on Science, Space and Technology recently held a hearing on interstellar missions. Lo B testified, urging that the committee allocate at least $90 million to study the feasibility of technological probes, citing potential planetary protection and national security concerns.

Looking Ahead

As the scientific community digests Lo B’s provocative claims, the debate underscores a larger tension in contemporary astronomy: how to balance the search for extraterrestrial intelligence with the rigorous testing of natural explanations. Whether the 3i Atlas program will become a reality—or remain a footnote in the annals of speculative science—remains to be seen. What is clear, however, is that Avi Lo B’s bold accusations have reignited conversation about the very nature of our place in the cosmos and the limits of the “bias” that can shape the direction of our exploratory ambitions.

Sources
1. IBTimes article: “3i Atlas Mystery: Harvard Scientist Avi Lo B Blasts $90 M Bias Against Technological Comet” (March 10, 2023).
2. NASA 3I Mission Proposal (2021).
3. Lo B, A. (2017). Science, 358, 1158–1162.
4. “Extraterrestrial Life: The Search for Intelligent Life Beyond Earth” by Avi Lo B (Simon & Schuster, 2019).
5. Nature Astronomy Review (2023).