A team of astrophysicists from several institutions in Italy, working with a colleague in the U.S., has found that aliphatic hydrocarbons observed on Ceres' surface have short lifetimes, suggesting they likely appeared there ...
When a massive star explodes as a supernova, it does more than release an extraordinary amount of energy. Supernovae explosions are responsible for creating some of the heavy elements, including iron, which is blasted out ...
Astronomy
Sep 25, 2024
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Although most potentially habitable worlds orbit red dwarf stars, we know larger and brighter stars can harbor life. One yellow dwarf star, for example, is known to have a planet teaming with life, perhaps even intelligent ...
Astrobiology
Sep 23, 2024
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35
Increasingly severe wildfires at high elevations are impacting snowpack—an important reservoir for the U.S. West. The altered landscape makes it more challenging to predict when snow will melt and how much water will be ...
Environment
Sep 20, 2024
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According to a large team of technical and health specialists, astronauts aboard the Orion spacecraft will be well protected from radiation when the Artemis II mission travels to the moon and back next year.
The launch of Polaris Dawn from Kennedy Space Center includes the first civilian commercial spacewalk and other factors that will be firsts for space medicine research. And that's why Emmanuel Urquieta, an internationally ...
Space Exploration
Sep 16, 2024
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6
Climate change is accelerating the melting of ice in Greenland at an alarming rate, with serious implications not only for the Arctic, but also for the global climate, including Europe. According to a study led by researchers ...
Earth Sciences
Sep 13, 2024
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University of Minnesota researchers have developed a new tool to measure ethane from space, leading to a better understanding of fossil fuel emissions worldwide. Ethane is commonly found in natural gas and is primarily used ...
Earth Sciences
Sep 11, 2024
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86
With the success of the Nuri launch last year and the recent launch of the newly established Korea Aerospace Administration, interest in space has increased, and both the public and private sectors are actively investing ...
Space Exploration
Sep 11, 2024
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1
An experiment designed to answer questions about the radiation environment for manned space missions was launched from Kennedy Space Center today.
Space Exploration
Sep 10, 2024
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1
In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body. Non-physicists often associate the word with ionizing radiation (e.g., as occurring in nuclear weapons, nuclear reactors, and radioactive substances), but it can also refer to electromagnetic radiation (i.e., radio waves, infrared light, visible light, ultraviolet light, and X-rays) which can also be ionizing radiation, to acoustic radiation, or to other more obscure processes. What makes it radiation is that the energy radiates (i.e., it travels outward in straight lines in all directions) from the source. This geometry naturally leads to a system of measurements and physical units that are equally applicable to all types of radiation.
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