Orbit views for each episode. Every orbit is drawn from the perigee, apogee, inclination and period in NASA history records, and each page lists its sources.
The first two satellites, 119 days apart, with a to-scale timeline of the first six months.
From Luna 1 to Vostok 2: the first person in orbit and the probe that looped behind the Moon, at two scales, with a to-scale timeline.