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
Atlas of mysteries
Items: 143All material
“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
GOFAST: screen speed and the parallax effect
A useful case in which apparent speed depends on camera motion and distance.
An explanation existsAtlantic off the US east coast
GIMBAL: image rotation and the limits of a clip
The well-known infrared clip requires distinguishing sensor imagery from the motion of an object.
Insufficient evidenceAtlantic off the US east coast
17 March 2013 flash: an impact that left a new crater
A bright ground-based flash received an independent check when LRO identified a fresh surface crater.
An explanation existsMare Imbrium, the confirmed 2013 impact crater
Chelyabinsk: a fireball and a shock wave
A morning sky event documented by numerous recordings and satellite observations.
An explanation existsChelyabinsk region
Racetrack Playa: the stones finally move on camera
Tracks across a dry lakebed were explained through observations of thin ice and wind.
An explanation existsCalifornia, Death Valley