Two-Line Element Set (TLE)
The compact data format that describes every tracked satellite orbit in just two lines of text — and how to read it
Tag: orbital-mechanics
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Apogee and Perigee
Understanding the high and low points of every orbit - from the International Space Station's careful dance with Earth's atmosphere to the extreme ellipses that take satellites to the edge of space and back.
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Geosynchronous Orbit (GEO)
Understanding the unique orbital sweet spot that keeps satellites perfectly positioned above Earth
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Low Earth Orbit (LEO)
The bustling downtown of space: where most satellites operate, communication networks bloom, and the challenges of atmospheric drag and radiation shape our approach to space operations
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Understanding Space Debris
From shattered satellites to exploded rocket stages, space debris poses a growing risk to satellites, space stations, and astronauts. Here's a deep dive into what causes space debris, notable generating events, and what we're doing about it.
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CelesTrak.org
An in-depth look at CelesTrak, the leading non-profit provider of orbital element sets and collision assessment tools, trusted by space professionals worldwide.