Although the ground feels immovable, in reality, all life on Earth is on the outside of an 8,000-mile-diameter "spaceship" that is twirling on its axis and sweeping around the galaxy. This book explains how astronomers can tell that Earth is going through such gyrations and the dramatic effects those motions have on the planet.
發表於2025-01-09
Earth's Journey Through Space 2025 pdf epub mobi 電子書 下載
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Earth's Journey Through Space 2025 pdf epub mobi 電子書 下載