Geospace scientists investigating fireball meteor above Cape Cod Bay

Doppler-whitened signal-to-noise ratio at the SIMONe VHF meteor radar receivers in Amherst, Siena, Pomfret, Clinton, and Beverly. Range–Doppler matched filtering used eight coherently integrated 10 ms codes (80 ms), giving a Doppler resolution of 12.5 Hz, with echo powers averaged over the five transmit codes and two receive channels. The plotted SNR is based on the strongest-bin power over − 50 to + 50 kHz Doppler range. The faint dashed white curves indicate the object’s bistatic range predicted by the estimated meteoroid trajectory, with annotations indicating the altitude of the meteoroid. Cyan outlines mark the regions where meteor head echoes were detected.

Vierinen et al. (in review). https://doi.org/10.48550/arXiv.2610.24566 Data from the meteor radar network detection of the May 30, 2026, Cape Cod Bay bolide.

On May 30, 2026, a meteor above Cape Cod Bay exploded into a fireball. With a dramatic sonic boom, the meteor, or superbolide, broke up at at altitude of 31 miles and fell into Cape Cod Bay. Scientists from MIT Haystack Observatory are researching this event with a team including colleagues in the US, Germany, and Norway.

With data obtained from a very high frequency (VHF) meteor radar network, researchers from Haystack with their US and international collaborators have been studying the path and behavior of this meteor. A paper is currently in peer review for publication in The Astronomical Journal (Vierinen et al., in review). A better understanding of how the Earth’s atmosphere affects such meteors and precise measurements of such events is crucial for today’s society, in terms of their effects both on Earth and in space.

Scientist Ryan Volz works on meteor radar networks, including the Spread Spectrum Interferometric Meteor Observing Network (SIMONe) located at Haystack Observatory. SIMONe was developed by MIT, the Arctic University of Norway, and the Leibniz Institute of Atmospheric Physics in Kühlungsborn, Germany. “We got pretty lucky to observe this one,” Volz told Space.com. “A bolide like this would have to enter the atmosphere within about 62 miles (100 kilometers) of a SIMONe-like meteor radar system for the head echoes we saw to be detectable, and there are only a handful of places in the world that currently meet that criteria.”

Cape Cod Bay bolide, 30 May 2026 — radar observations and trajectory (courtesy co-author Juha Vierinen)

“We got pretty lucky to observe this one.”
Ryan Volz, Haystack Observatory

Haystack Director Phil Erickson was recently interviewed by NPR Cape Cod (https://www.capeandislands.org/local-news/2026-11-05/international-team-of-scientists-studying-cape-cod-bay-fireball-event). “These studies . . . almost invariably lead to your better understanding of the fundamentals of the atmosphere. And as humans become a spacefaring society and people like SpaceX launch a whole bunch of satellites into low Earth orbit, the ability to understand our atmosphere is actually becoming a much more urgent need than it was even a decade ago,” said Erickson.

Publication details of this paper will be available here once it is published.