https://www.aanda.org/articles/aa/abs/2009/41/aa12072-09/aa12072-09.html
Planet migration in three-dimensional radiative discs | Astronomy & Astrophysics (A&A)
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https://arxiv.org/abs/1004.4137
[1004.4137] Planet Migration
Abstract page for arXiv paper 1004.4137: Planet Migration
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https://www.lonelyplanet.com/articles/great-migration-serengeti
The Serengeti's Great Migration: the world's ultimate wildlife spectacle - Lonely Planet
Jan 8, 2026 - Behold the ultimate wildlife spectacle: The Great Migration of wildebeest and zebra through the Serengeti.
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