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Pluto crosses Neptune's orbit, ending a nearly 20-year period when it was closer to the Sun than the gas giant; Pluto is not expected to interact with Neptune's orbit again until 2231.

Historical image related to Pluto crosses Neptune's orbit, ending a nearly 20-year period when it was closer to the Sun than the gas giant; Pluto is not expected to interact with Neptune's orbit again until 2231. from February 11, 1999

Related Wikipedia articles

Pluto

Dwarf planet

Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest known trans-Neptunian object by volume by a small margin, but is less massive than…
Source: Wikipedia (CC BY-SA)

February 11

Day of the year

February 11 is the 42nd day of the year in the Gregorian calendar; 323 days remain until the end of the year.
Source: Wikipedia (CC BY-SA)