Phenanthridines are heterocyclic compounds consisting of two six-membered benzene rings fused to a six-membered ring containing nitrogen. They are found in many naturally occurring organic compounds known for their anticancer ...
Analytical Chemistry
Jun 26, 2023
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2
From 1967 to 1972, the American space agency NASA conducted a series of space missions to the moon. Nearly 400 kilograms of soil samples were transported back to Earth. NGI—The Norwegian Geotechnical Institute is now using ...
Space Exploration
Jun 26, 2023
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18
There's more to Antarctic ice than meets the eye. Sea ice is not a uniform crust overlying the salty Southern Ocean.
Earth Sciences
Jun 26, 2023
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2
Do you know someone who knows someone? We have all played this game, often to be amazed that despite the extreme scale of human society, random people can be linked through very small chains of acquaintances—typically, ...
Mathematics
Jun 26, 2023
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37
The exploitation of polarization or charge separation in ferroelectric materials has led to remarkable advances in various fields, such as the development of new ultrasound diagnostic devices. Prominently, these ferroelectric ...
Condensed Matter
Jun 26, 2023
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15
You've done it. After years of effort and training, sacrifice, and pain, you become an astronaut and have finally set foot on Mars. Time to post your triumph on TikTok for that sweet social media cred. If only you can get ...
Space Exploration
Jun 26, 2023
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42
A team of international scientists has used NASA's James Webb Space Telescope to detect a new carbon compound in space for the first time. Known as methyl cation (pronounced cat-eye-on) (CH3+), the molecule is important because ...
Astronomy
Jun 26, 2023
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224
Our solar system has had a chaotic past. Earth and the other planets are now in stable orbits, but while they were forming they experienced drastic location shifts. Jupiter was likely much closer to the sun than it is now, ...
Planetary Sciences
Jun 26, 2023
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104
It's a strange, eerie-looking place. Carbon dioxide gas appears… and disappears in cycles and bursts throughout the year. It's how our planet would look if we could detect carbon dioxide (CO2) with our eyes. Scientists ...
Planetary Sciences
Jun 26, 2023
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46
The first stars of the universe were very different than the stars we see today. They were made purely of hydrogen and helium, without heavier elements to help them generate energy in their core. As a result, they were likely ...
Astronomy
Jun 26, 2023
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