Vela 4A (also known Vela 7 and OPS 6638) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ERS 18, and . The ship remains in orbit around Earth.
Vela 4A (also known Vela 7 and OPS 6638) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ERS 18, and . The ship remains in orbit around Earth. (en)
Vela 4A (also known Vela 7 and OPS 6638) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ERS 18, and . The ship remains in orbit around Earth. (en)