Sputnik 1's perigee (the closest point to Earth) was 227 km above the ground. Its speed measured at perigee was 8 km/s. its apogee (the farthest point from Earth) and period of revolution. Were the Soviet Union's Sputnik 1 and the Vostok spacecraft carrying Gagarin visible to the naked eye from the ground? Weather, astronomy, space | Science ・ 23 views
Obituaries Louisville Ky Courier Journal Faith Delilah
