g Stars - Every rule has an exception. One rule in astronomy, supported by considerable evidence, states that dust disks around newborn stars disappear in a few million years. Most likely, they vanish because the material has collected into full-sized planets. Astronomers have discovered the first exception to this rule - a 25-million-year-old dust disk that shows no evidence of planet formation. See article.
g Abodes - Last August, two groups of scientists announced the discovery of the smallest extrasolar planets found to date. But just what are these Neptune-size worlds? Are they gas giants, ice giants, or oversized Earths? Astronomer Alan Boss examines the possibilities. See article.
g Life - How have the molecules essential to life, such as proteins, adapted to function in extreme environments? The proteins that may help answer this question have been isolated from halophilic (salt-loving) microorganisms from the Dead Sea. So what's living in the Dead Sea anyway? See article.
g Intelligence - The insertion of human stem cells into monkey brains runs a "real risk" of altering the animals' abilities in ways that might make them more like us, scientists said last week. See article.
g Message - To subject the Fermi Paradox to needed experimental testing, a researcher has offered the Artifact Hypothesis: A technologically advanced extraterrestrial civilization has undertaken a long-term program of' interstellar exploration via transmission of material artifacts. article.
g Cosmicus - As the 21st century gets underway, the impact of space activities upon the welfare of humanity will only increase. See article.
g Learning - Splat! There goes another bug on the windshield. But wait, before you scrape off that disgusting mess, look carefully - there's an astronomy lesson in there! See “Horse Flies and Meteors” at article.
g Imagining - Like first contact stories? Then be sure to read Carl Sagan’s “Contact” (1985). See article.
g Aftermath - When an alien lands on the White House lawn, who should greet him (her? it?): Someone from the Immigration and Naturalization Service or someone from the Fish and Wildlife Commission? What legal rights would an extraterrestrial have? See article. Note: This article is from 1977, but the issue has been thought about very little.
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