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Satellite Internet Basics

Internet delivered from orbit, with no cables required β€” here's how it actually works.

The basic principle of satellite internet

Instead of ground-based towers or cables, satellite internet relays signal through satellites orbiting in space. A dish at your location sends a signal up to a satellite, which relays it to a ground station or another satellite to reach the wider internet.

Geostationary (GEO) satellite internet

GEO satellites orbit about 36,000 km above the equator, moving at the same speed as Earth's rotation so they appear to stay fixed in one spot in the sky. A small number of them can cover a huge area, but the sheer distance means a round trip takes over 500 milliseconds β€” a high-latency trade-off.

Low Earth orbit (LEO) satellite internet

LEO systems use large constellations of small satellites orbiting much closer, roughly 300-2,000 km up. SpaceX's Starlink is the best-known example β€” because the satellites are so much closer, latency drops to tens of milliseconds instead of hundreds.

Advantages

The biggest advantage is reach: a dish is often all you need to get online in mountainous regions, remote islands, deserts, or aboard a ship or aircraft β€” places where laying fiber or building cell towers isn't practical.

Disadvantages

Equipment and monthly costs tend to run higher than wired internet, and heavy rain or snow can weaken the signal. GEO satellite internet's high latency also makes it a poor fit for anything needing real-time responsiveness, like video calls.

Where it makes the most sense

Satellite internet shines less for typical urban households and more for remote homes without wired infrastructure, RVs, boats, and temporary communications in disaster-hit areas. In cities, wired and cellular internet are almost always more stable and cheaper.

How it stacks up against fiber and cellular

For most people in a city or suburb with existing fiber or cellular coverage, wired and mobile internet remain faster, cheaper, and lower-latency than any satellite option. Satellite internet earns its place specifically where that ground infrastructure doesn't exist or would be prohibitively expensive to build β€” its selling point is coverage in places nothing else reaches, not raw speed or price.

Latency matters more than you'd think

If you plan to use satellite internet for anything real-time β€” video calls, online gaming, or VoIP β€” the difference between GEO and LEO latency is worth checking before you commit. A GEO connection's 500+ millisecond round trip is very noticeable in a live conversation, while a modern LEO service can feel close to a typical wired connection.

Frequently Asked Questions

Is satellite internet better than wired internet in a city?

Usually not β€” cities generally already have well-built fiber and cellular infrastructure, so wired and mobile internet tend to win on both speed and cost. Satellite internet's advantage shows up specifically in places that infrastructure hasn't reached.

How much does weather actually affect it?

Heavy rain, snow, and thick cloud cover can weaken the signal, occasionally causing temporary slowdowns or dropped connections during severe weather. This is a shared characteristic across satellite internet systems generally, though the degree varies by provider and dish setup.