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(Diagram: wikipedia)
Oort cloud
The Oort cloud extends from about
3,000 to 100,000 astronomical units (AU) from the sun.
The Oort cloud has never been directly observed because it’s so far away.
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BSL Sign Languages
of Oort cloud
(BSL Version)
BSL Explanation
of Oort cloud
(BSL Version – Glossary of Astronomy)
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Glossary – Oort cloud
- in 1950, Dutch astronomer Jan Oort proposed the existence of the Oort cloud.
- the Oort cloud is named after Oort.
- the Oort cloud is the source of many long-period comets.
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