What Are Challenges to Quantum Memory? What is the Quantum Critical Point? What Are the Quantum Mechanics of Photosynthesis? What Are Some Tests for Quantum Gravity and the Theory of Everything?
The exosphere is also the region where some satellites orbit, particularly those designed for long-term observations of Earth or communications. The low density of particles in this layer means that there is minimal drag on these satellites, allowing them to maintain their orbits for extended period...
When that wind slams into Earth's ionosphere, or upper atmosphere, the aurora is born. In the Northern Hemisphere, the phenomenon is called the northern lights (aurora borealis), while in the Southern Hemisphere, it's called the southern lights (aurora australis). "These particles are ...
At the top of the list sitsJava,Indonesia’s most populous island and the most populous island on Earth. Over 150 million residents inhabit the 130,000 km² landmass, resulting in a density of nearly 1,200 people/km². 排在榜首的是爪哇岛,它是印度尼西亚人口最多的岛屿,也是地球上人口最...
A partial eclipse is seen as the sun rises behind the United States Capitol Building, Thursday, June 10, 2021, as seen from Arlington, Virginia. (Image credit: NASA/Bill Ingalls) During a partial solar eclipse, the moon's penumbra (the partial shadow) passes between the Earth and the sun...
All it needs is some good marketing. One selling point might be that most if not all mined iridium ultimately comes from meteorites, which contain 300-1500 times as much iridium as the earth’s native crust. OK, that’s iridium. Now here’s the weird deal on osmium. A series of web...
However, hydrogen molecules are not abundant on Earth, making up less than 0.0001% of our atmosphere. Because of this, hydrogen must be produced from other substances that contain it. The most common way to produce hydrogen that doesn’t use fossil fuels is to split water (H2O) into hydroge...
A radio galaxy is a galaxy that dominates the sky over Earth in radiowaves. These intense radio emissions originate from vast lobes of gas that extend well beyond the galaxy's visible structure, often spanning millions of light-years. Typically appearing in pairs, these radio lobes form when ...
Shaaban, S.M., et al. (2023) Influence of Copper Ions on the Structural, Mechanical, Radiation Shielding and Dielectric Properties of Borate Zinc-Fluoride Glasses. Journal of Electronic Materials. doi.org/10.1007/s11664-023-10564-x Zhang, L., et al. (2020) Influence of rare earth oxides...
Oil, also known as crude oil or petroleum, is a viscous liquid composed of hydrocarbons and other organic materials, extracted from the Earth and refined into various products such as gasoline, diesel, and jet fuel. It is also a key raw material for making plastics and other chemicals. Gas...