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Your navigation system just got a critical update, one that happens periodically because Earth’s magnetic north pole keeps moving. Here’s what to know.

and the costs go up when you need to use more fuel to get a spacecraft farther from Earth. And it's not just fuel—reusable vehicles like the SpaceX Falcon 9 can land after sending a payload off ...

Asteroid 2023 NT1 was first spotted on Saturday, two days after it made its closest approach to Earth on July 13. In other words, by the time sky surveys and scientists were first made aware of ...