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
Atlas of mysteries
Items: 143All material
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
GRAIL: two controlled impacts and unexpectedly dark traces
After their gravity-mapping mission, Ebb and Flow were directed into the surface. Orbital images revealed small craters with unusual ejecta.
An explanation existsNorthern latitudes, GRAIL A impact site
LCROSS: an impact into shadow and water in the ejecta
On October 9, 2009 a Centaur stage struck a permanently shadowed area in Cabeus. LCROSS instruments examined the ejecta and detected water; the estimate concerns a particular sampled locati…
An explanation existsCabeus crater, lunar south polar region
Sudan: an asteroid predicted before impact
Observations in space were connected to a fireball and recovered meteorites.
An explanation existsNubian Desert, Almahata Sitta region
Chandrayaan-1: how water appeared in lunar soil spectra
Measurements by three spacecraft changed the picture of a dry lunar surface. What did the instruments actually detect?
An explanation existsBroad areas of the lunar surface
Stephenville: testimony, a corrected statement and FAA radar data
The January 8, 2008 reports led to disputed military statements and a civilian analysis of radar data obtained through FOIA. The records' existence does not itself confirm an extraordinary …
Under reviewStephenville and Dublin, Erath County, Texas