NASA recently built and tested an additively-manufactured—or 3D printed—rocket engine nozzle made of aluminum, making it lighter than conventional nozzles and setting the course for deep space flights that can carry more ...
Space Exploration
Oct 20, 2023
5
62
When the landmass that is now the Indian subcontinent slammed into Asia about 50 million years ago, the collision changed the configuration of the continents, the landscape, global climate and more. Now a team of Princeton ...
Earth Sciences
Apr 26, 2019
1
578
Water is the most abundant yet least understood liquid in nature. It exhibits many strange behaviors that scientists still struggle to explain. While most liquids get denser as they get colder, water is most dense at 39 degrees ...
Condensed Matter
Aug 25, 2021
1
5042
Scientists at the University of Southampton have discovered that two intense periods of volcanism triggered a period of global cooling and falling oxygen levels in the oceans, which caused one of the most severe mass extinctions ...
Earth Sciences
Dec 2, 2021
1
232
A typical human cell is metabolically active, roaring with chemical reactions that convert nutrients into energy and useful products that sustain life. These reactions also create reactive oxygen species, dangerous by-products ...
Cell & Microbiology
Jun 1, 2023
0
1263
Quantum computing, though still in its early days, has the potential to dramatically increase processing power by harnessing the strange behavior of particles at the smallest scales. Some research groups have already reported ...
Quantum Physics
Aug 2, 2022
1
879
A typical nuclear reactor uses only a small fraction of its fuel rod to produce power before the energy-generating reaction naturally terminates. What is left behind is an assortment of radioactive elements, including unused ...
Materials Science
May 4, 2020
2
2514
A water disinfectant created on the spot using just hydrogen and the air around us is millions of times more effective at killing viruses and bacteria than traditional commercial methods, according to scientists from Cardiff ...
Materials Science
Jul 1, 2021
4
325
When the European Space Agency's Rosetta spacecraft discovered abundant molecular oxygen bursting from comet 67P/Churyumov-Gerasimenko (67P) in 2015, it puzzled scientists. They had never seen a comet emit oxygen, let alone ...
Astronomy
Mar 14, 2022
8
689
Though a doomed star exploded some 20,000 years ago, its tattered remnants continue racing into space at breakneck speeds—and NASA's Hubble Space Telescope has caught the action.
Astronomy
Sep 28, 2023
1
2498
