Atlantis and Columbia in a space shuttle traffic jam. In 1990 STS 35 (Atlantis) was heading to the launchpad. STS 38 (Columbia) was rolled back to the vehicle assembly building for repairs to liquid hydrogen lines.
Credit: RSC EnergiaThis photo released by spacecraft manufacturer RSC Energia shows the Vostok spacecraft. On April Russian cosmonaut Yuri Gagarin launched into orbit on Vostok 1 to become the first human to fly in space.