Here are six ways you may have used satellites today and didn't know it.
As a former research meteorologist at NASA, I could keep a log book of how many times people asked me one of the following questions:Did you know any astronauts? I often reflect on how NASA's mission is misunderstood or misrepresented by perceptions. Many people might be surprised to learn that
that uses the vantage point of space to improve understanding of our planet. I periodically use my platform in to shatter misperceptions or increase literacy. After receiving one of those questions recently, it prompted a thought about whether people know the numerous ways satellites are a part of their daily lives. Here are six of them.Global Positioning Systems .
GPS is used by almost anyone that has a modern smartphone or a navigation system in their car. For a basic definition of GPS,GPS is a three-part system: satellites, ground stations, and receivers. Satellites act like the stars in constellations—we know where they are supposed to be at any given time. The ground stations monitor and control the satellites, and they help determine their locations—both where they were and where they are forecast to be.
When the receiver gets information from at least 4 satellites in the constellation, your precise location can determined. There are more than 30 GPS navigation satellites in orbit at roughly 12,000 miles above the Earth. I actually explained to my kids that only a few years ago we actually had to call someone, use a map or write down directions to get somewhere.
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