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1957年10月4日,前苏联成功发射了人类历史上第一颗人造卫星,真正开启了人类探索宇宙的大门。一个月后的11月3日,第二颗人造卫星即将发射。这一次,卫星上搭乘了一位特殊的“客人”——小狗莱卡,它成为了飞上太空的第一个地球生命。科学家们在莱卡的身体表面和皮下安装了感应器,用来监测它的呼吸和心跳,在进入太空后,监测数据就会自动传回地面。随后科学家们把莱卡送入了专门为它设计的加压密封舱内,密封舱固定在火箭
On October 4, 1957, the former Soviet Union successfully launched the first man-made satellite in human history and truly opened the door to human exploration of the universe. A month later on November 3, the second satellite is about to launch. This time, the satellite aboard a special “guest ” - puppy Leica, it became the first life on Earth to fly into space. Scientists installed sensors on the surface and under the skin of Leica to monitor its breathing and heartbeat. After entering space, the monitoring data was automatically returned to the ground. Scientists then sent the Lycra into a pressurized capsule designed specifically for it, with the capsule fixed to the rocket