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It can easily be trimmed back to reflect Pluto's demotion to dwarf planet. "My Very Elegant Mother Just Sat Upon Nine Porcupines" [1] "Mary's violet eyes make Johnnie stay up nights pondering" [2] With the IAU's 2006 definition of planet which reclassified Pluto as a dwarf planet, along with Ceres and Eris, these mnemonics became obsolete.
Based on comparative analysis of textual and epigraphic evidence, historical linguists and philologists have been able to reconstruct with a comfortable level of certainty several epithets and expressions that were associated with *Dʰéǵʰōm in Proto-Indo-European times: *Pl̥th₂éwih₂ (the 'Broad One'), *Dʰéǵʰōm Méh₂tēr ('Mother-Earth'), and, in this form or a similar one ...
The first one I learned (in the mid 1950's) was "Man very early made jars serve useful needs, period." (None too good, I agree.) I suspect this predates the discovery of Pluto, when the "period" was added. Also, the original form of the "My very energetic mother" mnemonic featured pickles, not pizzas. (Unimportant, of course.)
For the giant planets, the "radius" is defined as the distance from the center at which the atmosphere reaches 1 bar of atmospheric pressure. [ 11 ] Because Sedna and 2002 MS 4 have no known moons, directly determining their mass is impossible without sending a probe (estimated to be from 1.7x10 21 to 6.1×10 21 kg for Sedna [ 12 ] ).
Scientists have found a new Earth-like planet that could support alien life – just 40 light-years away.. The planet is a remarkable discovery in the search for habitable worlds: it is slightly ...
Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...
A class of extrasolar planets whose characteristics are similar to Jupiter, but that have high surface temperatures because they orbit very close—between approximately 0.015 and 0.5 AU (2.2 × 10 ^ 6 and 74.8 × 10 ^ 6 km)—to their parent stars, whereas Jupiter orbits its parent star (the Sun) at 5.2 AU (780 × 10 ^ 6 km), causing low ...
At around 600 miles wide and up to 6,000 meters (nearly four miles) deep, the Drake is objectively a vast body of water. To us, that is. To the planet as a whole, less so.