Word: cloud
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Dates: during 1990-1999
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...apparent absence of water at the impact sites provides a clue about how far the S-L 9 fragments penetrated Jupiter's atmosphere before exploding. Theorists think that a layer of water vapor lies some 60 miles below the visible cloud tops; above the vapor layer, about 30 miles down, are clouds believed to consist of ammonium hydrosulfide, a sulfur compound. Since no water seems to have been stirred up, the explosions probably took place in the presumed sulfide layer. If researchers confirm that the sulfur rose up from Jupiter, it will be "a major discovery," says University of Arizona...
...take months to solve -- but it's clear that they are very high up in Jupiter's atmosphere, since the planet's familiar stripes can be seen through them. Astronomer Heidi Hammel of M.I.T. says the collisions will provide an opportunity to study the winds above Jupiter's cloud tops. "The mark left by the first impact is already starting to be spread around," she observes. There are also hints of seismic waves -- ripples thatmay have traveled all the way to a dense layer of liquid hydrogen thousands of miles down and then bounced back up to the surface, creating...
...moon. Despite scientists' sober warnings that the Great Comet Crash of 1994 might be an uneventful dud, the first chunk plowed into Jupiter's atmosphere with the force of perhaps 10 million hydrogen bombs, lofting a mushroom cloud of hot gas nearly 1,000 miles out into space and leaving a dark scar on the planet's familiar, brightly colored clouds. The assembled astronomers looked at the video screen for a second in silent disbelief -- then began cheering and toasting one another with swigs from champagne bottles. Said Hammel: "This is the kind of stuff I've been dreaming about...
CONTRIBUTORS: Bonnie Angelo, Laurence I. Barrett, Jesse Birnbaum, Nina Burleigh, Stanley W. Cloud, Jay Cocks, Barbara Ehrenreich, John Elson, Pico Iyer, Edward L. Jamieson (Consulting Editor), Leon Jaroff, Gregory Jaynes, Michael Kinsley, Charles Krauthammer, Richard Schickel, Walter Shapiro, R.Z. Sheppard, John Skow, Martha Smilgis, Mark Alan Stamaty, Richard Stengel, Andrew Tobias...
CONTRIBUTORS: Bonnie Angelo, Laurence I. Barrett, Jesse Birnbaum, Nina Burleigh, Stanley W. Cloud, Jay Cocks, Barbara Ehrenreich, John Elson, Pico Iyer, Edward L. Jamieson (Consulting Editor), Leon Jaroff, Michael Kinsley, Charles Krauthammer, Richard Schickel, Walter Shapiro, R.Z. Sheppard, John Skow, Martha Smilgis, Mark Alan Stamaty, Richard Stengel, Andrew Tobias...