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Latest Mark Showalter Stories

New Neptune Moon
2013-07-15 15:30:53

Lee Rannals for redOrbit.com - Your Universe Online According to NASA, the Hubble Space Telescope has revealed that Neptune has been hiding another moon, bringing the total count of moons orbiting the planet to 14. The new moon, named S/2004 N 1, is no more than 12 miles across, making it the smallest known moon in the Neptunian system. NASA said this moon is so small that it is about 100 million times fainter than the faintest star that can be seen with the naked eye. The moon is so...

Photo illustration by Jaren Wilkey/BYU
2012-02-11 08:39:21

Study shows sleep guidelines prescribe too much for teens Whether or not you know any high school students that actually get nine hours of sleep each night, that´s what federal guidelines currently prescribe. A new Brigham Young University study found that 16-18 year olds perform better academically when they shave about two hours off that recommendation. “We´re not talking about sleep deprivation,” says study author Eric Eide. “The data simply says that...

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2011-03-31 15:00:00

Like forensic scientists examining fingerprints at a cosmic crime scene, scientists working with data from NASA's Cassini, Galileo and New Horizons missions have traced telltale ripples in the rings of Saturn and Jupiter back to collisions with cometary fragments dating back more than 10 years ago. The ripple-producing culprit, in the case of Jupiter, was comet Shoemaker-Levy 9, whose debris cloud hurtled through the thin Jupiter ring system during a kamikaze course into the planet in July...

2010-01-28 19:31:08

A new study shows that the number of hours physicians spend on the job each week is influenced by the fear of malpractice lawsuits. Economists Eric Helland and Mark Showalter found that doctors cut back their workload by almost two hours each week when the expected liability risk increases by 10 percent. The study, published in the new issue of the Journal of Law and Economics, notes that the decline in hours adds up to the equivalent of one of every 35 physicians retiring without a...

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2005-12-22 16:10:00

NASA -- To the surprise of astronomers, NASA's Hubble Space Telescope has photographed a pair of new rings around the distant planet Uranus. The largest is twice the diameter of the planet's previously known rings. The new rings are so far away that they are being called Uranus's "second ring system." In addition, Hubble has spied two small satellites, one sharing its orbit with one of the newly discovered rings. Even more surprisingly, precise analysis of the data reveals that the orbits of...


Word of the Day
siliqua
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'
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