Orbit Lab: Set the initial position and velocity of a satellite near Earth and see the orbital path that results. Perigee, apogee and a variety of other orbital parameters are displayed while an animated satellite follows the orbit path in real time. Click on "show area" to reveal a swept area that illustrates Kepler's second law. Orbit Lab The Game: Using your skills and experience with the Orbit Lab, build orbits that meet required perigee and apogee altitudes and locations. Complete all nine challenges!