how can satellites and space ships stay orbiting around the Earth if our planet is moving at very high speeds across the universe?
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There’s essentially nothing in space to “slow” anything down besides gravity. And since gravity goes in all directions, the further you get from a source of gravity, the less it effects things, very quickly. So only “near” objects really have an effect on one another. So the gravity of the Earth keeps anything small close to it, and they travel with it. And the Earth is most effected by the gravity of the Sun, and travels with it. And the sun moves about whatever is at the center of the Milky Way. And so on. It’s all systems of smaller things moving about bigger things.
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