Make Pluto a planet again!

The Week (US) - - 20 News -

A sci­en­tific campaign has been launched to re­store Pluto to plan­et­hood. Once the so­lar sys­tem’s ninth planet, tiny Pluto was de­moted to “dwarf planet” sta­tus in 2006 af­ter the In­ter­na­tional As­tro­nom­i­cal Union re­de­fined plan­ets as round ce­les­tial bod­ies that cir­cle the sun and have “cleared their neigh­bor­hoods”—that is, be­come the grav­i­ta­tion­ally dominant bod­ies in their or­bit. Be­cause Pluto is sur­rounded by icy de­bris, it lost its full plan­e­tary sta­tus. Now two sci­en­tists in­volved in NASA’s New Hori­zons mis­sion to explore Pluto and the Kuiper Belt, Alan Stern and David Grin­spoon, are push­ing for Pluto to be let back into the club. The pair ar­gues in a Wash­ing­ton Post op-ed that the IAU’s def­i­ni­tion is deeply flawed. Earth could not have been clas­si­fied as a planet for its first 500 mil­lion years, they note, be­cause back then it, too, or­bited among a field of de­bris. Stern and Grin­spoon want the IAU to adopt a sim­pler def­i­ni­tion of a planet: a round ob­ject in space that is smaller than a star. If they suc­ceed, Pluto could once again be called a planet.

ef­fect of eggs, re­searchers at the Univer­sity of Sydney put 128 peo­ple with pre­di­a­betes or type 2 di­a­betes—a ma­jor risk fac­tor for car­dio­vas­cu­lar dis­ease—on two dif­fer­ent di­ets for a year. One group ate 12 eggs a week and the other ate two eggs or fewer a week. At the end of the study, the re­searchers found no ad­verse changes in car­dio­vas­cu­lar risk fac­tors in ei­ther group, in­clud­ing in blood pres­sure, weight, and choles­terol and blood-sugar lev­els, Med­i­ re­ports. “Our re­search in­di­cates peo­ple do not need to hold back from eat­ing eggs,” study au­thor Nick Fuller says, “if this is part of a healthy diet.”

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