Science
Science spans our understanding of how Earth and the cosmos work. Get the biggest news on biology, physics, space, dinosaurs, and more—along with the latest episodes of the Ask Us Anything and Weirdest Thing podcasts.
Latest in Science
![the international space station floats over earth](https://www.popsci.com/wp-content/uploads/2018/12/28/MGYW4VKIZBFTXVRFXT5XOEKL5Y.jpg?w=675)
International Space Station
The mystery of the ISS hole just got even weirder
![Oxygen might not lead us to aliens after all](https://www.popsci.com/wp-content/uploads/2018/12/21/6HGTJKSHCTCCFGSW5G32SVR2VA.jpg?w=525)
Deep Space
Oxygen might not lead us to aliens after all
![earth is visible from the window of a rocket in space](https://www.popsci.com/wp-content/uploads/2018/12/14/QFBJT4WVE2Q5447IYWOYBDJWBU.jpg?w=800)
Private Space Flight
Virgin Galactic finally made it to space. Here’s what that means.
![Why do people need to sleep?](https://www.popsci.com/wp-content/uploads/2018/12/13/OHBRDEFNPGB7KHOSKXY2VTSBXM.jpg?w=675)
Health
Why do people need to sleep?
![A person looks up at the Milky Way](https://www.popsci.com/wp-content/uploads/2018/12/12/A6CPB4I4X46PGDQFXZIINNFOUE.jpg?w=869)
Science
Why is the night sky dark?
![country dramatic sunset red](https://www.popsci.com/wp-content/uploads/2018/12/10/QKOPUFKJMVV7JE2YNBCV2FILFQ.jpg?w=675)
Environment
What gives a sunset its color?
![What are constellations?](https://www.popsci.com/wp-content/uploads/2019/06/06/Y32OK4CWIVITJ3BOQGSEXQWT2M.jpg?w=624)
Science
What are constellations?
![We finally know how bright the universe is](https://www.popsci.com/wp-content/uploads/2019/06/06/OAASLOSQPGVBMW2R7PPWVA425I.jpg?w=759)
Black Holes
We finally know how bright the universe is
![One-pound Fly Creek HV Carbon with Dyneema tent by Big Agnes in nature](https://www.popsci.com/wp-content/uploads/2018/11/20/2TJ5WCFX5RAZZGQ3S72ONNLABE.jpg?w=719)
Announcements
The best recreation gear of 2018
![The International Space Station is crawling with bacteria and some may be harmful](https://www.popsci.com/wp-content/uploads/2019/03/18/HTXJUU4QR3U445QPKRRLPVNZEE.jpg?w=600)
International Space Station
The International Space Station is crawling with bacteria and some may be harmful
![Onyx exoskeleton by Lockheed Martin on a soldier's leg](https://www.popsci.com/wp-content/uploads/2018/11/20/TPVSA66GZBG5FCPP7L2MFWCE3I.jpg?w=719)
Announcements
The greatest security innovations of 2018
![The Parker Solar Probe is the single greatest innovation of 2018](https://www.popsci.com/wp-content/uploads/2019/06/06/RX7OKQ5JUBSC6OF23IQHHRCWKY.jpg?w=800)
Best of What's New
The Parker Solar Probe is the single greatest innovation of 2018
![How are dinosaurs named?](https://www.popsci.com/wp-content/uploads/2019/03/18/UVBKSKHXHM4O5WIDR25MYKM7N4.jpg?w=678)
Dinosaurs