Word: nebula
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Dates: during 1990-1999
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Hubble wasn't so sure. And in 1924, three years after Shapley departed to take over the Harvard Observatory, Hubble found proof to the contrary. Spotting a Cepheid variable star in the Andromeda nebula, Hubble used Shapley's technique to show that the nebula was nearly a million light-years away, far beyond the bounds of the Milky Way. It's now known to be the full-fledged galaxy closest to our own in a universe that contains tens of billions of galaxies. "I do not know," Shapley wrote Hubble in a letter quoted by biographer Christianson, "whether...
...Insurrection still manage to produce some impressive visuals: Data walks around as a head without a body after removing part of his invisibility suit; Worf clubs an attacking drone ship out of the sky; truly evil-looking Son'a spaceships surround the Enterprise with the colorful backdrop of a nebula; and, as usual, the make-up artists have created a variety of strange-looking aliens...
...beginning of its life, the "Pistol Star" (so named for the peculiar shape of its surrounding nebula) was 200 times more massive than...
...nebula is so vast that scientists measure it in light years, estimating its diameter at four light years, the distance from the sun to Alpha Centauri...
...next year, McCaffrey won the Nebula Award, the other top honor for science fiction writers, for her book Dragonrider. She also has been the recipient of many Science Fiction Book Club awards, and has been the guest speaker numerous times at the World Science Fiction Convention...