Halton C. Arp

FOCAL POINTAstronomical LiteracyPICK UP a newspaper on any day and you'll probably see headlines like "Japanese Take Lead in New Superconductor Technology" or "Food Additive Feared Carcinogenic." From the greenhouse effect to the space station, we are constantly confronted with decisions that...

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...