When it comes to heating up the planet, not all greenhouse gases are created equal. They vary widely in their global warming potential (GWP), a measure of how much infrared thermal radiation a greenhouse gas would absorb ...
Environment
Jul 18, 2024
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58
Investigators at NASA's Marshall Space Flight Center in Huntsville, Alabama, will use observations from a recently-launched sounding rocket mission to provide a clearer image of how and why the sun's corona grows so much ...
Astronomy
Jul 18, 2024
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17
Launched in December 2013, ESA's Gaia spacecraft is on a mission to map the locations and motions of more than a billion stars in the Milky Way with extreme precision.
Astronomy
Jul 17, 2024
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8
A research team from the Center of Applied Space Technology and Microgravity (ZARM) at the University of Bremen has investigated the risk of fire on spacecraft in a recent study. The results show that fires on planned exploration ...
Space Exploration
Jul 16, 2024
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1
Britain, prepare for deep depression: Storms ruin tea. A new study reveals that Storm Ciaran cut an invisible path of mayhem across southern Britain last autumn, destroying any possibility that 20 million people could have ...
Earth Sciences
Jul 16, 2024
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1
Turbulence, temperature changes, water vapor, carbon dioxide, ozone, methane, and other gases absorb, reflect, and scatter sunlight as it passes through the atmosphere, bounces off the Earth's surface, and is collected by ...
Earth Sciences
Jul 12, 2024
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0
Aerosols, often emitted alongside greenhouse gases, can brighten clouds and cause significant cooling. However, the uncertainty associated with aerosol–cloud interactions (ACIs) is large and potentially significant enough ...
Environment
Jul 9, 2024
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0
When Australia's east coast is caught in the grip of a heat wave, relief can come in the form of abrupt, often gale-force wind changes known as "southerly busters."
Environment
Jul 9, 2024
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1
Using the CARMENES spectrograph, astronomers have found evidence of water vapor in the atmosphere of a hot Saturn exoplanet designated HD 149026 b, dubbed Smertrios. The finding, reported in a research paper published on ...
A team of astronomers has identified a temperate exoplanet as a promising super-Earth ice or water world.
Astrobiology
Jul 8, 2024
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2301
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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