Simulations

Credit: Durham UniversityPioneering scientists from Durham University’s Institute for Computational Cosmology used the most detailed supercomputer simulations yet to reveal an alternative explanation for the Moon’s origin, 4.5 billion years ago. It revealed that a giant impact between Earth and a <span class="glossaryLink" aria-describedby="tt" data-cmtooltip="<div class=glossaryItemTitle>Mars</div><div class=glossaryItemBody>Mars is the second smallest planet in our solar…

Future summer p′CO2 is dominated by warming, particularly in shelf seas. a–i, Arctic maps of the summer anomalies of total pCO2 (a–c), the thermal component (d–f) and the non-thermal component (g–i) are shown for the CMIP5 mean (RCP8.5) as decadal averages for 2006–2015 (modern; a,d,g), 2091–2100 (future; b,e,h) and their difference (c,f,i). The summer anomaly is the average of the monthly anomalies over the three summer months (June, August,…

Credit: Pixabay/CC0 Public Domain Today's driving simulators have a big problem: They don't look realistic enough, particularly background objects, such as trees, and road markings. But researchers have developed a new way to create photorealistic images for simulators, paving the way for better testing of driverless cars.…

Credit: Pixabay/CC0 Public Domain A group of international scientists led by Cornell University is—more rigorously and systematically than ever before—evaluating if and how the stratosphere could be made just a little bit "brighter," reflecting more incoming sunlight so that an ever-warming Earth maintains its cool. …

Environment design. (a) The two-dimensional gridworld environment used in Experiment 1. (b) To study the properties of the optimal reward, we made several modifications to the gridworld environment. Top row: In the one-time learning environment, the agent could chose to stay in the food location constantly after reaching it. In the lifetime learning environment, the agent was teleported to a random location in the gridworld as soon as it reached the…

Not all stars are happy to just hang around, orbiting the galactic center with all the other stars. Some stars go rogue, punted out across the Milky Way with significant force. These are the runaway stars, and we can trace their trajectories to understand violent events that can take place in the Universe.  One such star, and one of the more famous, is Zeta Ophiuchi. Located around 440 light-years from Earth in the equatorial constellation of Ophiuchus, it's also one of the oddest stars in the sky.Not only is it…

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An interesting way to detect anomalies by simulating paths through time series dataPhoto by Yash on UnsplashAnomaly detection with unlabeled time series data can be a complex task. A lot of the issues involve needing to find a technique that can properly account for a series’ seasonality, trends, correlated series, and other peculiarities. Estimations of series with LSTMs, which should be able to pick up on many of these peculiarities, is popular for anomaly detection for this reason. Marco Cerliana demonstrates such a…

Digging deeper through laboratory experiments and computer simulations, researchers at the Eidgenossische Technische Hochschule (ETH) Zurich have proposed a new theory on the formation of the Earth. In their study, researchers developed models to demonstrate how planets formed in our solar system and shed light on their composition.“The prevailing theory in astrophysics and cosmochemistry is that the Earth formed from chondritic asteroids. These are relatively small, simple blocks of rock and metal that formed early on in…

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