Astronomy Picture of Day: Eris: Largest Known Planet# Astronomy - 天文
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Eris: The Largest Known Dwarf Planet
Credit & Copyright: W. M. Keck Observatory
Explanation: Is Pluto the largest dwarf planet? No! Currently, the largest
known dwarf planet is (136199) Eris, renamed last week from 2003 UB313. Eris
is just slightly larger than Pluto, but orbits as far as twice Pluto's
distance from the Sun. Eris is shown above in an image taken by a 10-meter
Keck Telescope from Hawaii, USA. Like Pluto, Eris has a moon, which has been
officially named by the International Astrono
Credit & Copyright: W. M. Keck Observatory
Explanation: Is Pluto the largest dwarf planet? No! Currently, the largest
known dwarf planet is (136199) Eris, renamed last week from 2003 UB313. Eris
is just slightly larger than Pluto, but orbits as far as twice Pluto's
distance from the Sun. Eris is shown above in an image taken by a 10-meter
Keck Telescope from Hawaii, USA. Like Pluto, Eris has a moon, which has been
officially named by the International Astrono