Toppled moon lander sends back more images, with only hours left until it dies
A moon lander that ended up on its side managed to beam back more pictures, with only hours remaining before it dies.
A moon lander that ended up on its side managed to beam back more pictures, with only hours remaining before it dies.
Space Exploration
Feb 27, 2024
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If you happened to be looking at the sky in Europe on a cold night on February 5, 1993, there is a chance you could have seen a dim flash of light. That flash came from a Russian space mirror experiment called Znamya-2.
Astronomy
Jan 12, 2024
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25
Australia is known for its wonderous and unique wildlife. But, just like the rest of the world, Australia is expected to get even hotter due to climate change. This could spell disaster for many of the marsupials that call ...
Plants & Animals
Jan 11, 2024
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The oldest evidence of photosynthetic structures reported to date has been identified inside a collection of 1.75-billion-year-old microfossils, a Nature paper reveals. The discovery helps to shed light on the evolution of ...
Evolution
Jan 4, 2024
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261
One of the most significant constraints on the size of objects placed into orbit is the size of the fairing used to put them there. Large telescopes must be stuffed into a relatively small fairing housing and deployed to ...
Astronomy
Dec 27, 2023
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When Emiliano Cortés goes hunting for sunlight, he doesn't use gigantic mirrors or sprawling solar farms. Quite the contrary, the professor of experimental physics and energy conversion at LMU dives into the nanocosmos.
Nanomaterials
Dec 1, 2023
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246
Just as people can get sunburned, plants can also suffer from too much sunlight. To stay healthy, they use an internal "sun protection mechanism." Pierrick Bru, a Ph.D. student working with Alizée Malnoë at Umeå Plant ...
Molecular & Computational biology
Dec 1, 2023
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In a recent publication in Nature Communications, a joint research team of Johannes Gutenberg University Mainz (JGU), the University of Cologne, and the University of Oldenburg has presented their findings on the functioning ...
Cell & Microbiology
Nov 13, 2023
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While the surface of the moon has been mapped in incredible detail over the last several decades, one region has eluded orbital cameras due to the lack of sunlight, which are aptly called the permanently shadowed regions ...
Planetary Sciences
Sep 26, 2023
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In an exciting milestone for lunar scientists around the globe, India's Chandrayaan-3 lander touched down 375 miles (600 km) from the south pole of the moon on Aug. 23, 2023.
Space Exploration
Sep 22, 2023
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Sunlight, in the broad sense, is the total spectrum of the electromagnetic radiation given off by the Sun. On Earth, sunlight is filtered through the atmosphere, and the solar radiation is obvious as daylight when the Sun is above the horizon. Near the poles in summer, the days are longer and the nights are shorter or non-existent. In the winter at the poles the nights are longer and for some periods of time, sunlight may not occur at all. When the direct radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and heat. Radiant heat directly produced by the radiation of the sun is different from the increase in atmospheric temperature due to the radiative heating of the atmosphere by the sun's radiation. Sunlight may be recorded using a sunshine recorder, pyranometer or pyrheliometer. Sunlight takes about 8.3 minutes to reach the Earth. The World Meteorological Organization defines sunshine as direct irradiance from the Sun measured on the ground of at least 120 watts per square metre.
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared, visible, and ultra-violet light. Bright sunlight provides luminance of approximately 100,000 candela per square meter at the Earth's surface.
Sunlight is a key factor in photosynthesis, a process crucially important for life on Earth.
This text uses material from Wikipedia, licensed under CC BY-SA