Could humans survive if satellites stopped working?

Yes—humans would almost certainly survive, but life would get much harder fast.

Satellites are not essential to human survival, but they support a lot of modern systems. If they stopped working, the biggest hits would be:

• Navigation: GPS would fail for cars, ships, aircraft, and logistics.
• Timing: Some telecom, power, and finance systems rely on satellite-based timing or backups tied to it.
• Weather forecasts: Forecasting would become less accurate, especially for storms.
• Communications: Satellite phones, TV, and remote-area links would go down. The internet would still mostly work because it runs on fiber cables, not satellites.

Food, shipping, and supply chains would be disrupted, with delays and shortages in some places. But this would not mean human extinction. It would mean major economic damage, local outages, and serious disruption until backups and alternatives took over.