Oort

British

/ ɔːt /

noun

Jan Hendrick. 1900–92, Dutch astronomer, who confirmed (1927) and developed the theory of galactic rotation. He was the first to propose (1950) the existence of a mass of comets orbiting the sun far beyond the orbit of Pluto (the Oort cloud )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Oort

In 1998, he told me that we would someday live in the Oort Cloud.

From Slate ● Dec. 9, 2025

And when people are ogling the night sky this week, they should also keep an eye out for two additional celestial sightings — Saturn and the appearance of an ancient Oort cloud comet, she added.

From Los Angeles Times ● Oct. 16, 2024

The Oort Cloud, a hypothesized shell of icy worlds at an unfathomable distance from the sun, has never been directly seen—and VRO won’t change that.

From National Geographic ● Jan. 9, 2024

However, the researchers think it's most likely that the Oort cloud is made of a collection of much smaller icy objects.

From Scientific American ● Jun. 28, 2023

Pluto is about forty AUs from us, the heart of the Oort cloud about fifty thousand.

From "A Short History of Nearly Everything" by Bill Bryson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023