Stephen E. Strom

FOCAL POINTA Bright Future for Planetary Astronomy?A CENTURY AGO planetary astronomy was a major component of the work at most major observatories. Unfortunately, in the view of some astronomers and historians, the long "canals of Mars" controversy soured professional opinion of planetary astronomy...

Early Views from Landsat 4SATELLITE IMAGERY of the Earth is nothing new Explorer 6 started it all in 1959. Nor are the scenes here and on the following three pages the best that technology has to offer (reconnaissance satellites do orders of magnitude better).But Landsat 4. launched last July...