Cosma / Communication / Knowledge / Realm / Physical / Universe / Solar System / Oort Cloud Etc.
—————————
Introduction1
Where Does the Solar System End? (NASA Space Place)
NASA Space Place (YouTube Channel)
Encyclopedia
Oort cloud, named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 50,000 to 200,000 AU (0.8 to 3.2 ly). It is divided into two regions: a disc-shaped inner Oort cloud (or Hills cloud) and a spherical outer Oort cloud. Both regions lie beyond the heliosphere and in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud. — Wikipedia
Oort Cloud (Encyclopædia Britannica)
Oort Cloud (COSMOS: The SAO Encyclopedia of Astronomy)
Oort Cloud (Eric Weisstein’s World of Astronomy, Wolfram Research)
Oort Cloud (Wolfram Alpha)
———————-
Innovation
Science
————————–
Preservation
History
The Man Who Knew Comets (Adam Frank, NPR)
Library
Subject: Oort Cloud (Open Library)
Subject: Oort Cloud (WorldCat)
—————————
Participation
Education
The Oort Cloud (Crash Course Astronomy, YouTube Video)
MERLOT: Multimedia Educational Resource for Learning and Online Teaching
Community
News
Oort Cloud (Nova Research Highlights, American Astronomical Society)
Oort Cloud (EurekaAlert, AAAS)
Oort Cloud (JSTOR)
Oort Cloud (Science Daily)
Oort Cloud (Phys.org)
Recent News from Phys.org …
- Webb finds young sun-like star forging common...on January 21, 2026 at 7:55 pm
- Two green comets shine bright. How to spot them...on October 16, 2025 at 4:41 pm
- ESA's Mars Express and ExoMars orbiters catch a...on October 13, 2025 at 2:39 pm
- Where did the interstellar comet 3I/ATLAS come...on September 12, 2025 at 2:10 pm
Government
Document
——–
Related
Here are links to pages about closely related subjects.
“Fundamentals”
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle
“Space”
Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon
Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid
——
Notes
1. The resources on this page are are organized by a classification scheme developed exclusively for Cosma.
