📚 Learning Guide
Outer Solar System Features
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Imagine astronomers discover a new icy object in the Outer Solar System that is on a highly elliptical orbit. Considering the migration of Neptune and its effects on the Kuiper Belt and scattered disk, what could be inferred about the object's origin and its potential future interactions with the planets?

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Choose the Best Answer

A

The object likely originated from the Oort Cloud and will eventually collide with Neptune due to its orbit.

B

The object may have come from the Kuiper Belt and was ejected by Neptune's gravitational influence into its current orbit.

C

The object is probably a remnant from the formation of the Solar System and will remain stable in its orbit indefinitely.

D

The object is a comet that will soon enter the inner solar system and become a visible comet due to its current trajectory.

Understanding the Answer

Let's break down why this is correct

Answer

Because the object’s orbit is very elongated, it likely started in the Kuiper Belt and was pushed outward by Neptune’s migration, which scattered many bodies into more eccentric paths; the same process that created the scattered disk would explain its current shape. The object's orbit shows it was probably nudged by Neptune’s early movement, so it probably originated beyond 30 astronomical units but was later pulled into a more distant, tilted trajectory. In the future it could swing back into the inner solar system, where encounters with Neptune or even Uranus might further increase its eccentricity or tilt it, or it could be sent on a comet-like path toward the Sun. For example, a Kuiper‑belt dwarf planet that Neptune shoved into a 3:1 resonance could later be ejected into a highly elongated orbit, making it a potential new comet. Thus, the object's highly elliptical path suggests a history of Neptune’s migration and hints that it may experience future close encounters with the giant planets.

Detailed Explanation

Neptune moved outward during early Solar System life, tugging on Kuiper Belt rocks. Other options are incorrect because Oort Cloud objects sit far beyond Neptune and rarely meet it; Highly elliptical orbits keep an object far from the Sun, so they change distance a lot.

Key Concepts

Kuiper Belt and Scattered Disk Dynamics
Gravitational Interactions in the Outer Solar System
Oort Cloud and Long-Period Comets
Topic

Outer Solar System Features

Difficulty

medium level question

Cognitive Level

understand

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