Oak trees accumulate more wood when there is more carbon dioxide (CO₂) in the atmosphere. That's the key finding from our new study, carried out in a long-established forest in Staffordshire, England, that we have turned ...
Environment
Aug 14, 2024
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India's Chandrayaan-3 mission was launched last summer and its Vikram lander touched down on the moon's surface last August. Shortly thereafter, it released a rover called Pragyan. Since that time, the rover has been meandering ...
On May 11, a gorgeous aurora surprised stargazers across the southern United States. That same weekend, a tractor guided by GPS missed its mark.
Planetary Sciences
Aug 16, 2024
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232
Two University of Alaska Fairbanks scientists have discovered a new type of "whistler," an electromagnetic wave that carries a substantial amount of lightning energy to the Earth's magnetosphere.
Planetary Sciences
Aug 17, 2024
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Using observations from a NASA suborbital rocket, an international team of scientists, for the first time, has successfully measured a planet-wide electric field thought to be as fundamental to Earth as its gravity and magnetic ...
Planetary Sciences
Aug 28, 2024
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307
The "space junk" that fell over the Eastern Cape on Sunday morning was a meteorite.
Planetary Sciences
Aug 26, 2024
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139
While the moon lacks any breathable air, it does host a barely-there atmosphere. Since the 1980s, astronomers have observed a very thin layer of atoms bouncing over the moon's surface. This delicate atmosphere—technically ...
Planetary Sciences
Aug 2, 2024
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The ocean has a major influence on weather and climate. Scientists estimate it has absorbed more than 90% of the heat and 25% of the excess carbon released into the atmosphere by human activities.
Earth Sciences
Aug 14, 2024
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434
Astronomers have discovered that red dwarf stars can produce stellar flares that carry far-ultraviolet (far-UV) radiation levels much higher than previously believed.
Astronomy
Aug 5, 2024
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185
ESA's Solar Orbiter spacecraft has provided crucial data to answer the decades-long question of where the energy comes from to heat and accelerate the solar wind. Working in tandem with NASA's Parker Solar Probe, Solar Orbiter ...
Astronomy
Aug 30, 2024
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91
An atmosphere (from Greek ατμός - atmos, 'vapor' + σφαίρα - sphaira, 'sphere') is a layer of gases that may surround a material body of sufficient mass, by the gravity of the body, and are retained for a longer duration if gravity is high and the atmosphere's temperature is low. Some planets consist mainly of various gases, but only their outer layer is their atmosphere (see gas giants).
The term stellar atmosphere describes the outer region of a star, and typically includes the portion starting from the opaque photosphere outwards. Relatively low-temperature stars may form compound molecules in their outer atmosphere. Earth's atmosphere, which contains oxygen used by most organisms for respiration and carbon dioxide used by plants, algae and cyanobacteria for photosynthesis, also protects living organisms from genetic damage by solar ultraviolet radiation. Its current composition is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms.
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