MadSci Network: Astronomy
Query:

Re: Is there Really a planet X??? Or a tenth Planet???

Area: Astronomy
Posted By: Jim Moskowitz, Museum Educator
Date: Mon Dec 16 09:31:23 1996
Message:

There hasn't been a tenth planet discovered in our solar system. LOTS of astronomers have spent lots of time on various hunts for one, though. There's a huge page about it at http://dept.physics.upenn.edu/nineplanets/hypo.html#planetx

On the other hand, planets have been discovered in other solar systems. There's a list of all the candidates (over a dozen) at http://www.obspm.fr/departement/darc/planets/catalog.html But they're so far away that we couldn't send spacecraft to them in less than hundreds of years -- using today's technology, at least. Makes them less cool in my opinion since we can't see what they're like....

-Jim


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