in Arizona—but ts  it he day.

    raveled to te and decided fairly sly t ter. By early1991 it abliso nearly everyone’s satisfaction t Csite.

    Still, many people didn’t quite grasp  could do. As Steprong initial doubts about t . . . [] only six miles across er of eighousand miles?”

    Conveniently a natural test of t Ser. For t time,o ness a cosmic collision—and ness it very o telescope. Most astronomers, according to Curtis Peebles, expected little,particularly as t  a co sp a string of ty-one fragments. “Mysense,” e one, “is t Jupiter s up  so much as a burp.”

    One , Nature ran an article, “tingt t itute noteor shower.

    ts began on July 16, 1994,  on for a ion of Gene Sed. One fragment, knoruck  six million megatons—seventy-five times moretence. Nucleus G  tain, but it created  ics of theory.

    Luis Alvarez never kneer or of t, as , ralian outback, o searc sites. On a dirt track in tanami Desert—normally one oftiest places on Eart rise just as anotantly,  of  totor spacecraft. t tered around MeteorCrater.

    Anderson and itzke no longer er t killed t ill  and most perfectly preserved impact crater in ted States,”

    Anderson said. (A little verbal dexterity is required to keep Manson’s superlative status. Oters are larger—notably, C site in1994—but to ters of limestone and mostly offs difficult to study,” Anderson on, “’s because it is buried t it is actuallycomparatively pristine.”

    I asked tooday.

    “O  be visible to tilit