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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.
Rare Earth was succeeded in 2003 by the follow-on book The Life and Death of Planet Earth: How the New Science of Astrobiology Charts the Ultimate Fate of our World, also by Ward and Brownlee, which talks about the Earth's long-term future and eventual demise under a warming and expanding Sun, showing readers the concept that planets like Earth ...
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.)
The distance separating the planet and its star is just 7% of the distance between Earth and the Sun, and the planet receives 1.6 times more energy from its star than Earth does from the Sun.
Avi Loeb, an astrophysicist and cosmologist, has suggested that Earth may be a very early example of a life-bearing planet and that life-bearing planets may be more likely trillions of years from now. He has put forward the view that the Universe has only recently reached a state in which life becomes possible and this is the reason humanity ...
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 ...
The modern form of the concept emerged when the Copernican Revolution demonstrated that the Earth was a planet revolving around the Sun, and other planets were, conversely, other worlds. [3] The question of whether other inhabited planets or moons exist was a natural consequence of this new understanding.
ABC. Played by: Patricia Richardson Optimistic, insightful and down-to-earth, Jill is considered the voice of reason in the Taylor family. She's nurturing, she’s sensitive to her kids' needs and ...