Editing Orbital Mechanics (Kepler's Laws) (section)

== <span style="color: #FFFFFF;">Applying</span> ==
'''Modeling 'The Orbital Velocity' (Calculating 'Speed' needed to stay up):'''
<syntaxhighlight lang="python">
import math

def calculate_orbital_speed(altitude_km, planet_mass_kg, planet_radius_km):
    """
    Shows the speed required to 'Miss the Ground'.
    """
    # G * M / r (where r is radius + altitude)
    G = 6.674e-11
    r_total = (planet_radius_km + altitude_km) * 1000 # convert to meters
    
    velocity_mps = math.sqrt((G * planet_mass_kg) / r_total)
    
    return f"ORBITAL SPEED: {round(velocity_mps, 2)} m/s. ({round(velocity_mps * 3.6, 2)} km/h)."

# Case: International Space Station (400km altitude)
print(calculate_orbital_speed(400, 5.972e24, 6371))
</syntaxhighlight>

; Mechanics Landmarks
: '''Johannes Kepler (1609)''' → The "First" to "Map" the "True Motion" of planets, "Ending" the "Circle Obsession" of the Greeks.
: '''Isaac Newton’s 'Principia' (1687)''' → The "Physics" behind the "Geometry": proving "Gravity" (see Article 21) is what "Drives" Kepler’s Laws.
: '''The 'Gravity Assist' (Slingshot)''' → Using a "Planet's Gravity" to "Steal" "Speed" and "Change Direction" (e.g. 'Voyager 1'), "Allowing" for "Deep Space" exploration.
: '''Low Earth Orbit (LEO) Congestion''' → The "Modern Problem": too many "Satellites" and "Debris" in the same space, leading to the "Kessler Syndrome" (Collision chain reaction).
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