Venus is often introduced as Earth’s twin because of its similar size and rocky composition, yet its surface reaches about 467°C under 93 times Earth’s atmospheric pressure; the Soviet landers that reached it transmitted for only 23 to 127 minutes before succumbing to the conditions.

Venus is often introduced as Earth’s twin because of its similar size and rocky composition, yet its surface reaches about 467°C under 93 times Earth’s atmospheric pressure; the Soviet landers that reached it transmitted for only 23 to 127 minutes before succumbing to the conditions.

Venus resembles Earth in size, but Soviet surface probes could transmit for only 23 to 127 minutes as heat penetrated their protected electronics.