Maunakea: a spiral after a rocket launch
A night-sky camera recorded an expanding luminous spiral.
An explanation existsSubaru Observatory, Hawaiʻi Island
Atlas of mysteries
Items: 143All material
Hunga Tonga: waves around the planet
A volcanic explosion left an atmospheric signature far beyond the Pacific.
An explanation existsHunga Tonga–Hunga Ha’apai
SGR 1935+2154: a radio flash inside our Galaxy
On 28 April 2020 independent instruments recorded a short radio signal and a high-energy burst from the same direction.
An explanation existsDirection of Galactic magnetar SGR 1935+2154
BLC1: a signal toward Proxima that turned out to be interference
A narrow band, frequency drift and disappearance in comparison observations made the signal interesting. Further tests revealed a different origin.
An explanation existsDirection of Proxima Centauri in Parkes data
Makalu: the footprints described as “Yeti tracks”
An Indian expedition reported tracks in snow in April 2019. The animal itself was not verified.
UnverifiedMakalu base-camp region
Bering Sea: a fireball recorded from orbit
The aftermath of a powerful airburst was studied above a remote marine region.
An explanation existsNorthern Pacific Ocean
“Yeti” DNA samples: bears and a dog
Genetic analysis tested nine specimens attributed to a Yeti.
An explanation existsScientific publication
Oumuamua: an interstellar visitor and the limits of interpretation
The first recognized interstellar object showed unusual brightness variations and slight non-gravitational acceleration, prompting debate about its physical nature.
Under reviewPassage through the inner Solar System
Devil's Kettle: where half a river goes
Two flow measurements showed that water disappearing into a rock pothole returns to the river below the falls.
An explanation existsBrule River, Judge C. R. Magney State Park, Minnesota
FRB 121102: locating the galaxy behind brief radio flashes
Repeating radio bursts turned a broad sky direction into an association with a particular small galaxy.
An explanation existsExtragalactic source FRB 121102