Copernical Team
Galileo sunspot sketches versus modern 'deep learning' AI
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It's a fascinating thought to consider.
What exactly did the Sun look like, centuries ago? What would we see, if astronomers back in the time of Kepler and Galileo had modern technology monitoring the Sun across the electromagnetic spectrum, available to them?
Thanks to modern artificial intelligence, there may be a way to actually 'see' just what state the Sun was in, way back in those days of yore. A recent study, titled "Generation of Modern Satellite Data from Galileo Sunspot Drawings in 1612 by Deep Learning" out February 2021 in the Astrophysical Journal of the American Astronomical Society used an innovative set of deductions to compare sketches of sunspots with modern views from ground and space-based observations. The study was led by Harim Lee from Kyung Hee University in the Republic of South Korea.
Galileo and the Sun
Sunspot records represent one of the longest sets of astronomical data available, going all the way back to Chinese observations in 1128 A.D.
Space law is an important part of the fight against space debris
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Space is getting crowded. More than 100 million tiny pieces of debris are spinning in Earth orbit, along with tens of thousands of bigger chunks and around 3,300 functioning satellites.
Large satellite constellations such as Starlink are becoming more common, infuriating astronomers and baffling casual skywatchers. In the coming decade, we may see many more satellites launched than in all of history up to now.
Collisions between objects in orbit are getting harder to avoid. Several technologies for getting space debris out of harm's way have been proposed, most recently the plan from Australian company Electro Optic Systems (EOS) to use a pair of ground-based lasers to track debris and "nudge" it away from potential collisions or even out of orbit altogether.
Tools like this will be in high demand in coming years. But alongside new technology, we also need to work out the best ways to regulate activity in space and decide who is responsible for what.
Active debris removal
EOS's laser system is just one of a host of "active debris removal" (ADR) technologies proposed over the past decade.
Satellite imagery key to powering Google Earth
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One of the most comprehensive pictures of our changing planet is now available to the public. Thanks to the close collaboration between Google Earth, ESA, the European Commission, NASA and the US Geological Survey, 24 million satellite photos from the past 37 years have been embedded into a new layer of Google Earth – creating a new, explorable view of time on our planet.
Time keeping
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Time keeping Indonesian Govt deploys Iridium Push-to-Talk to overcome remote communications challenges
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Iridium Communications reports that the Republic of Indonesia's government has adopted Iridium Push-to-Talk (PTT) devices to support communication efforts across the country. By fully deploying 500 Iridium PTT handsets, the Indonesian government now has a reliable "grab-and-go" real-time satellite communications solution, ideal for communications on-the-move applications across the country's div India's telecom regulator assessing Starlink system before accepting beta
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Elon Musk's space company SpaceX recently launched its Starlink satellite internet service that claims to be capable of delivering 50Mbps to 150Mbps internet access to "any part" of the Earth under the sky. The global roll-out of this internet service is expected to be completed by 2022.
SpaceX has offered to pre-sell its Starlink satellite internet service in India, and the country's Depa Stellar feedback and an airborne observatory; scientists determine a nebula younger than believed
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In the southern sky, situated about 4,300 light years from Earth, lies RCW 120, an enormous glowing cloud of gas and dust. This cloud, known as an emission nebula, is formed of ionized gases and emits light at various wavelengths.
An international team led by West Virginia University researchers studied RCW 120 to analyze the effects of stellar feedback, the process by which stars inject e Black holes like to eat, but have a variety of table manners
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All supermassive black holes in the centres of galaxies appear to have periods when they swallow matter from their close surroundings. But that is about as far as the similarities go. That's the conclusion reached by British and Dutch astronomers from their research with ultra-sensitive radio telescopes in a well-studied region of the universe. They publish their findings in two articles in the Concordia's Contained Confinement
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ESA-sponsored medical doctor Nick Smith snapped this photo of the storage containers at Concordia research station in Antarctica shortly before sunset, 8 April 2021. The dark blue line at the horizon is the shadow of the Earth.
The containers store food, recycling and the scientific samples of blood, saliva, and stool that Nick routinely takes. The units on the right are part of the summer NASA satellites detect signs of volcanic unrest years before eruptions
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Although there are telltale signs that a volcano is likely to erupt in the near future - an uptick in seismic activity, changes in gas emissions, and sudden ground deformation, for example - accurately predicting such eruptions is notoriously hard.
This is, in part, because no two volcanoes behave in exactly the same way and because few of the world's 1,500 or so active volcanoes have moni