Pluto's Still Cool in School: One-Time Planet's Demotion to a 'Dwarf' Inspires New Lessons From Teachers.
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By Michael Duck, The Morning Call, Allentown, Pa.  Sep. 5--Dwarfed by the towering, dark dome of Bethlehem Area School District's planetarium, teacher Bill Safranek flipped to a slide depicting what used to be the nine planets of the solar system.
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By KHALID MOSS  Although I'd been warned by some bushyhaired astrophysicist on The Today Show, the news late last month hit me like a runaway meteorite. Astronomers say Pluto is no longer a planet.   I guess when it comes to planetoids, size does matter.
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The dwarf  planet that effectively forced astronomers to strip Pluto of its planethood is  not only bigger than the former ninth planet, but also much more massive, a new  study finds.
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Two old stars appear to be gearing up for a second generation of planet formation, a phenomenon astronomers say they have never seen before.
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Is Pluto a planet? The world's astronomers met in Prague last week to vote on this question, and in a sort of cosmic game of "Survivor," they voted Pluto off the solar system.
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By Contra Costa Times, Walnut Creek, Calif.  Sep. 5--FOR THE PAST 76 years, Pluto has been an impostor, posing as one of the nine planets in our solar system.
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or about the size of the planet Neptune, say astronomers from the University of Texas and two other institutions.
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Most of the time, Pluto is the planet (or dwarf planet) farthest from the sun. But every 248 years its eccentric orbit carries it inside the orbit of Neptune and they switch positions for a while.
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"My! Very educated morons just screwed up numerous planetariums." That mnemonic device is just one way teachers and others are adapting to Pluto's loss of planet status.
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It's been 75 years since the discovery of Pluto, but it remains a mystery. Perhaps in another 10 years some of its secrets will be revealed when a space probe gets close enough for a good look.
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Two new discoveries suggest that sunlike solar systems like ours â with life-hosting planets â are more common than previously thought.
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Eris is the new name for the solar body formerly known as Xena, while Pluto has a new number.
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An object smaller than Pluto has been discovered orbiting a dying star in what astronomers said Monday resembles a pint-sized version of our solar system.
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The space rock formerly known as Xena The distant rock which prompted astronomers to strip Pluto of its planethood has been offically named Eris, the International Astronomical Union (IAU) announced Wednesday.â¦
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Astronomers using NASA's Hubble Space Telescope have photographed one of the smallest objects ever seen around a normal star beyond our Sun. Weighing in at 12 times the mass of Jupiter, the object is small enough to be a planet.
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While striving to find ever smaller, more rocky worlds, planet hunters have moved from discovering not just Jupiter-class planets outside our solar system. Now astronomers have found two new Neptune-class planets on their road to pinpointing a new Earth-like system.
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Not long after puny Pluto was stripped of its planethood, Janis Robinson started selling $25 "PLUTO IS A PLANET" T-shirts on the Internet.