Oort Cloud as solar system edge explainer (ties Voyager/IMAP/Planet Nine)
Key Questions
What is the Oort Cloud and its location in the solar system?
The Oort Cloud is the solar system's edge, extending from 5,000 to 100,000 AU (about 1.5 light-years) beyond the heliopause. It lies far past Pluto at 40 AU.
How do Voyager and IMAP relate to the Oort Cloud?
Voyager probes have crossed the heliopause, providing data on the outer solar system leading to the Oort Cloud. IMAP will study interstellar mapping and Oort Cloud comets.
What evidence links the Oort Cloud to Planet Nine?
Planet Nine, potentially at 600 AU, could influence Oort Cloud objects' orbits. Ongoing hunts, including Rubin searches, use comet/stellar flyby evidence for its existence.
Oort Cloud 5k-100k AU/~1.5 ly beyond heliopause/IMAP-Voyager/Pluto 40AU/Planet Nine 600AU; comets/stellar flybys evidence. Light-time visuals to Alpha Cen/Rubin searches.
Sources (2)
Updated Apr 10, 2026