On Monday, he saw something on a radar image on his home computer.
Because it is a radar image, this is called a "false-color" image.
"We have a live weather radar image running in real time," Mr. Perry said.
In a radar image, that would match the "Day 2 mystery object," the unidentified part seen floating away from the shuttle in a radar image made during its second day in orbit.
London appears as a cluster of bright radar reflections along the River Thames in this radar image from Sentinel-1A.
The air outside the Channel 9 weather studio turned green — the actual air, not the radar image of it — and huge warm raindrops were falling.
This picture, published in Science by Ralph Lorenz of the University of Arizona and his colleagues, is a radar image of Titan, the largest moon of Saturn.
A white inner tube represents a radar image of the storm with half-inch PVC pipes spiraling out from the eye.
Brian Williams, the anchor of "NBC Nightly News," worriedly eyed a radar image of Tuscaloosa as he left New York for London on Wednesday evening.
The above radar image shows Wax Lake delta in Louisiana, one of the few places in the world where deltas are growing naturally.
Releasing data of this resolution for the world, along with the radar image mosaic, amounts to a huge increase in topographical information benefiting people worldwide, he said.
