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News briefs: November 27
Posted: Wed, Nov 28, 2001, 9:52 AM ET (1452 GMT)
- NASA released images Tuesday of moving eruptions and lava lakes on the surface of Jupiter's volcanic moon Io. The images were taken by the Galileo spacecraft during close flybys of the innermost large moon of Jupiter in August and October.
- Scientists involved with the original study of Martian meteorite ALH84001 have criticized a recent paper which failed to show evidence of past biological activity. In a response published on SpaceRef, three scientists from NASA's Johnson Space Center said that the new study failed to examine magnetite crystals in ALH84001 that are most likely biogenic in origin. The paper, by Peter Buseck of Arizona State University and others, was published earlier this month in Proceedings of the National Academy of Sciences.
- Long-duration spaceflight could reinvigorate dormant viruses in humans, the New York Times reported Tuesday. The Times article referred to a paper in Psychosomatic Medicine, in which researchers found that a dozen astronauts had weakened responses to the Epstein-Barr virus after shuttle missions. While not a problem for short missions, this could become a more serious problem for long-duration flights. Scientists believe increased levels of stress during a spaceflight could be the cause of problem.
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