Developing sperm (blue; artificially colored) fill the center of the seminiferous tubules (orange), which form the human testicle.Credit: Susumu Nishinaga/Scientific Photo Library A cutting-edge operation has restored a man’s ability to produce sperm by transplanting tissue samples that were removed from one of his testicles and frozen 16 years earlier, when he was still a
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Receive the daily Popular Science newsletter💡 Breakthroughs, discoveries and DIY tips delivered six days a week. By registering, you confirm that you are 16 years of age or older, you will receive newsletters and promotional content, you agree to our Terms of Use, and you acknowledge the data practices in our Privacy Policy. You can
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Read this statement in English here. The media accreditation period for the launch of NASA’s Nancy Grace Roman space telescope mission is now open. The Roman telescope is scheduled to launch no earlier than 7:20 a.m. ET on Sunday, August 30, aboard a SpaceX Falcon Heavy rocket, from Launch Complex 39A at NASA’s Kennedy Space
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This composite of images taken by NASA’s Psyche mission shows the Mars crescent growing as the spacecraft approaches the planet for gravitational assistance from May 2 to 15, 2026. The series begins with the smaller crescent in the center of the image when Mars is furthest from the spacecraft, and progressively grows larger as the
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