New observations from NASA's New Horizons spacecraft hint that the Kuiper Belt--the vast, distant outer zone of our solar system populated by hundreds of thousands of icy, rocky planetary building blocks--might stretch much farther out than we thought.
New observations from NASA's New Horizons spacecraft hint that the Kuiper Belt--the vast, distant outer zone of our solar system populated by hundreds of thousands of icy, rocky planetary building blocks--might stretch much farther out than we thought.
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