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Recent Articles
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Topic: Photosynthesis
Hubble did not look at Earth directly. Instead, the astronomers used the Moon as a mirror to reflect sunlight, which had passed through Earth’s atmosphere, and then reflected back towards Hubble. ![]() This illustration shows the Hubble Space Telescope superimposed on an image of the Moon, seen during a lunar eclipse. Taking advantage of a total lunar eclipse in January 2019, astronomers using NASA’s Hubble Space Telescope have detected ozone in Earth’s atmosphere. This method serves as a proxy for how they will observe Earth-like planets transiting in front of other stars in search of life. (M. Kornmesser (ESA/Hubble), NASA, and ESA) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Mars Curiosity Rover discovers information in Rocks about Mars’ cold, icy past
Weaving this story, element by element, from roughly 140 million miles (225 million kilometers) away is a painstaking process. But scientists aren’t the type to be easily deterred. Orbiters and rovers at Mars have confirmed that the planet once had liquid water, thanks to clues that include dry riverbeds, ancient shorelines, and salty surface chemistry. ![]() Filled with briny lakes, the Quisquiro salt flat in South America’s Altiplano represents the kind of landscape that scientists think may have existed in Gale Crater on Mars. (Maksym Bocharov) «Read the rest of this article» Sections: Technology | No Comments
NASA measures Mass Ocean Animal Migration with help from French Space Laser
Researchers observed this vertical migration pattern using the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite — a joint venture between NASA and the French space agency, Centre National d’Etudes Spatiales — that launched in 2006. They published their findings in the journal Nature Wednesday. ![]() Researchers used the space-based CALIPSO lidar to measure the planet’s largest animal migration, which takes place when small sea creatures swim up from the depths at night to feed on phytoplankton, then back down again just before sunrise. (NASA/Timothy Marvel) «Read the rest of this article» Sections: Technology | No Comments
NASA Study reveals Amazon Drying Out due to Human Activities
Scientists at NASA’s Jet Propulsion Laboratory in Pasadena, California, analyzed decades of ground and satellite data over the Amazon rainforest to track both how much moisture was in the atmosphere and how much moisture was needed to maintain the rainforest system. «Read the rest of this article» Sections: Technology | No Comments
NASA’s Search for Life
Our own planet provides some inspiration. Microbes fill the air with methane; photosynthesizing plants expel oxygen. Perhaps these gases might be found wherever life has taken hold. «Read the rest of this article» Sections: Technology | No Comments
NASA’s Orbiting Carbon Observatory-3 gathers data for the first time
Just weeks later, the OCO-3 team was able to make its first determinations of carbon dioxide and solar-induced fluorescence – the “glow” that plants emit from photosynthesis, a process that includes the capture of carbon from the atmosphere. «Read the rest of this article» Sections: Technology | No Comments
NASA’s Orbiting Carbon Observatory 3 (OCO-3) will study plant growthWritten by Carol Rasmussen
The light is far too dim for us to notice under normal circumstances, but it can be measured with a spectrometer. Called solar-induced fluorescence (SIF), it’s the most accurate signal of photosynthesis that can be observed from space. That’s important because, as Earth’s climate changes, growing seasons worldwide are also changing in both timing and length. ![]() This honeysuckle is glowing in response to a high-energy ultraviolet light rather than to the Sun, but its shine is similar to the solar-induced fluorescence that OCO-3 will measure. (©Craig P. Burrows) «Read the rest of this article» Sections: Technology | No Comments
NASA reports new study reveals Arctic Carbon Cycle acceleratingNASA’s Jet Propulsion Laboratory
A new NASA-led study using data from the Arctic Boreal Vulnerability Experiment (ABoVE) shows that carbon in Alaska’s North Slope tundra ecosystems spends about 13 percent less time locked in frozen soil than it did 40 years ago. In other words, the carbon cycle there is speeding up — and is now at a pace more characteristic of a North American boreal forest than of the icy Arctic. ![]() A 2017 image of Qikiqtaruk-Herschel Island Territorial Park in the Yukon shows more vegetation, shrubs and water compared with the 1987 image of the same area. (Isla Myers-Smith/University of Edinburgh) «Read the rest of this article» Sections: Technology | No Comments
NASA reports new study shows Lightening Color of Soybean Leaves may increase Growth and YieldWritten by Elyssia Widjaja
A science team led by Donald Ort of the University of Illinois and research scientist Berkley Walker of the University of Düsseldorf, Germany, combined detailed field measurements of nearly 70 varieties of soybeans with a sophisticated model of the above-ground portion of soybean plants, developed by co-author Darren Drewry of NASA’s Jet Propulsion Laboratory in Pasadena, California. «Read the rest of this article» Sections: Technology | No Comments
NASA examines Carbon emissions across the Earth to better understand our warming climateWritten by Kate Ramsayer, NASA Goddard Space Flight Center
As carbon dioxide levels in the atmosphere continue their rapid, human-made rise past levels not seen for hundreds of thousands of years, NASA scientists and others are confronted with an important question for the future of our planet: How long can this balancing act continue? And if forests, other vegetation and the ocean cannot continue to absorb as much or more of our carbon emissions, what does that mean for the pace of climate change in the coming century? ![]() NASA is advancing new tools like the supercomputer model that created this simulation of carbon dioxide in the atmosphere to better understand what will happen to Earth’s climate if the land and ocean can no longer absorb nearly half of all climate-warming CO2 emissions. (NASA/GSFC) «Read the rest of this article» Sections: Technology | No Comments
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