[42] A Satellite’s Blind Spots / 衛星盲點, 1990

The public service Landsat System has blind spots over territory and time. However, personal satellites can soon be purchased for about the price of a Mercedes, and space junk is increasingly hard to track.

提供公共服務的大地衛星(Landsat)系列在某些區域與時間點會出現盲點。不過,在不久的未來,人們便可用約一輛賓士汽車的價錢購得私人衛星;此外,太空垃圾也越來越難以被追踪。