31.   This journal targets serious amateur astronomers.

32.   Under the direction of a Columbia University astronomer, Joe Patterson, it is a rare collaboration between amateur astronomers and a professional.

33.   Visible even to amateur astronomers in the days immediately after the impacts, the once prominent bruises left in the cloud tops by the explosions have faded considerably.

34.   While the rest of the city fears a large blackout in the heat of the summer, amateur astronomers, in their hearts, long for one.

35.   Where sky conditions are clear, Earth-bound amateur astronomers with small telescopes should be able to make out the smudges left by the explosions.

36.   Yet, oddly, audiences are rarely let in on a fact known to every amateur astronomer.

37.   Yuji Hyakutake, a photoengraver and amateur astronomer in southern Japan, discovered Comet Hyakutake with high-power binoculars just over six weeks ago.

38.   A Japanese amateur astronomer, Shigeki Murakami, sighted the comet a few hours later and is considered a co-discoverer.

39.   Airports publish terminal maps, while amateur astronomers post fly-by schedules of satellites, letting terrorists know when to duck.

40.   Amateur astronomers also keep unofficial tabs on the tether.