navigation satellite timing telecommunications earthquake studies

Navigation satellites also provide precise timing

Global navigation satellite systems provide location, but their precise timing signals have other uses. Telecommunications networks use them to stay synchronized, and scientists use them as a reference in earthquake studies.

The Solar System is missing two common kinds of planets

Compared with many known planetary systems, ours has no planets closer to the Sun than Mercury and no super-Earths—planets larger than Earth but smaller than Neptune. Super-Earths are the most common type of planet in the Milky Way, making their absence unusual.

Exorcisms did not settle Jesus’s authority

In the Gospel accounts, first-century observers could accept that Jesus cast out evil spirits yet disagree about the source of his power. Some could see the acts as empowered by God, others by Satan.

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navigation satellite timing telecommunications earthquake studies

Navigation satellites also provide precise timing

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