Active Worlds Exploration

The whole thing feels like something out of a creepypasta, and not just because of the mysterious Hitomi Fujiko. The art style of Active Worlds is.

Mars may be cold and dry, but it's far from dead.The first official science results from NASA's quake-hunting just came out, and they reveal a regularly roiled world.' We've finally, for the first time, established that is a seismically active planet,' InSight principal investigator Bruce Banerdt, of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, said during a teleconference with reporters Thursday (Feb. 20).Related:Martian seismicity falls between that of and that of Earth, Banerdt added.' In fact, it's probably close to the kind of seismic activity you would expect to find away from the tectonic plate boundaries on Earth and away from highly deformed areas,' he said.

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Probing the Martian subsurfacenear the Martian equator in November 2018, kicking off a two-year, $850 million mission to probe the Red Planet's interior in unprecedented detail.The stationary lander carries two main science instruments to do this work: a supersensitive suite of seismometers and a burrowing heat probe dubbed 'the mole,' which is designed to get at least 10 feet (3 meters) below the Red Planet's surface.Analyses of marsquake and heat-transport measurements will allow the mission team to construct a detailed, 3D map of, NASA officials have said. In addition, InSight scientists are using radio signals beamed from the lander to track how much Mars wobbles on its axis over time. This information will help researchers determine how big and dense the planet's core is. (The mission's full name — Interior Exploration using Seismic Investigations, Geodesy and Heat Transport — references these various lines of investigation.)Overall, InSight's observations will help scientists better understand how rocky planets such as Mars, Earth and Venus form and evolve, mission team members have said.The mission's initial science returns, which were published today (Feb. 21) in six papers in the journals and, show that InSight is on track to meet that long-term goal, Banerdt said. (We have gotten a over the past year or so, however, as mission team members have released some findings in dribs and drabs.)Related. Lots of quakesThe new studies cover the first 10 months of InSight's tenure on Mars, during which the lander detected 174 seismic events.These quakes came in two flavors.

One hundred and fifty of them were shallow, small-magnitude tremors whose vibrations propagated through the Martian crust. The other 24 were a bit stronger and deeper, with origins at various locales in the mantle, InSight team members said. (But even those bigger quakes weren't that powerful; they landed in the magnitude 3 to 4 range. Here on Earth, quakes generally must be.)That was the tremor tally through September 2019. InSight has been busy since then as well; its total quake count now stands at about 450, Banerdt said. And all of this shaking does indeed originate from Mars itself, he added; as far as the team can tell, none of the vibrations were caused by meteorites hitting the Red Planet.

So, there's a lot going on beneath the planet's surface.But that activity is quite different from what we're used to on Earth, where most quakes are caused by sliding against, over or under each other. Mars doesn't have active plate tectonics, the researchers said, so both types of quakes are caused by the long-term cooling of the planet since its formation 4.5 billion years ago.' As the planet cools, it contracts, and then the brittle outer layers then have to fracture in order to sort of maintain themselves on the surface,' Banerdt said. 'That's kind of the long-term source of stresses.' And some Martian locales are more stressed than others. One particularly active region is the Cerberus Fossae fracture system, which lies about 1,000 miles (1,600 kilometers) east of InSight's Elysium Planitia landing site.The mission team traced two of the largest detected marsquakes to Cerberus Fossae, which 'contains faults, volcanic flows and liquid water outflow channels with ages as recent as 2-10 Ma million years ago, and possibly younger from impact crater counts,' Banerdt and his colleagues wrote in.' So, it's possible that there's actual magma at depth that's cooling,' InSight deputy principal investigator Sue Smrekar, also of JPL, said during Thursday's teleconference.

That cooling would lead to the contraction of the magma chamber, causing deformation of the crust, she added.But Smrekar stressed that this is a hypothesis, not a definitive determination of what's going on at Cerberus Fossae. Indeed, though mission team members think they understand Martian seismicity in broad strokes, they're still trying to nail down how it works in detail.Related. Many insightsA wealth of information can be gleaned from InSight's quake measurements. For example, analyses of how the seismic waves move through the Martian crust suggest there are small amounts of water mixed in with the rock, mission team members said.' Our data is consistent with a crust which has some moisture in it, but we can't say one way or the other whether there are of water at this point,' Banerdt said.The new papers report a variety of other discoveries as well.

For example, InSight is the first mission ever to tote a magnetometer to the Martian surface, and that instrument detected a local magnetic field about 10 times stronger than would be expected based on orbital measurements. (Mars lost its global magnetic field billions of years ago, however. This allowed solar particles to strip away the once-thick, which spurred the planet's transition from a relatively warm and wet world to the cold desert it is today.)InSight is also taking a wealth of weather data, measuring pressure many times per second and temperature once every few seconds, Banerdt said. This information helps the mission team better understand environmental noise that could complicate interpretations of the seismic observations, but it also has considerable stand-alone value.' This is really going to, I think, revolutionize our understanding of the interaction of the atmosphere with the surface of Mars,' Banerdt said. 'That's one of the things that's really going to open up a whole new window of research on Mars.' Mole updateNot everything has gone smoothly for InSight, however.

Notably, the mole has been unable to get down to its prescribed depth because the than mission team members had anticipated. (The mole's self-hammering burrowing system requires a certain amount of friction to work.)The mission team has tried several strategies to get the mole moving, including pressing on the side of the probe with InSight's robotic arm to generate the required friction. This latter tactic has generated some halting success, but the mole remains stranded too close to the surface.So, in the next six to eight weeks, mission team members aim to try a modification of the arm-pressing strategy, in which they'll push on the mole's back rather than its side. The goal is to get the mole about 16 inches (40 centimeters) down, at which point it will hopefully be able to start digging on its own, Banerdt said.The InSight team would also like a bit more cooperation from Mars on the seismic side of things, if possible.

The lander has not yet spotted any truly big quakes, which have the potential to paint a clearer picture of the planet's deep interior for mission scientists.The lack of powerful quakes is no surprise, Banerdt stressed; big tremors are much rarer than their smaller counterparts here on Earth, after all. So, the team may have to wait a while to get one.But such issues aren't derailing the mission; the team is excited about how things have gone thus far, Banerdt said.' I think we're well on our way to getting most, if not all, of the goals that we set for ourselves 10 years ago when we started this mission,' he said.Mike Wall is the author of ' ' (Grand Central Publishing, 2018; illustrated by ), a book about the search for alien life. Follow him on Twitter. Follow us on Twitter. Admin said:The first science returns from NASA's InSight Mars lander reveal a seismically active Red Planet.Mars is a seismically active world, first results from NASA's InSight lander reveal: Read moreThe article stated, 'But that activity is quite different from what we're used to on Earth, where most quakes are caused by tectonic plates sliding against, over or under each other. Mars doesn't have active plate tectonics, the researchers said, so both types of quakes are caused by the long-term cooling of the planet since its formation 4.5 billion years ago.

'As the planet cools, it contracts, and then the brittle outer layers then have to fracture in order to sort of maintain themselves on the surface,' Banerdt said. 'That's kind of the long-term source of stresses.' Interesting report. Cooling rates of planets and calculating their ages is tricky work, namely how long it takes the planet to cool down. Lord Kelvin used heat and cooling rate to calculate the age of the Earth, this age was much younger than the radiometric age of meteorites used in 1955 by Clair Patterson who established the current age of the Earth used in science today.

Code is organized as follows:.Stage-I: encoders (Arrangement, Color).Stage-II: fully-connected, q-learning, ILP.End-to-End: Resnet, Relational Networks, PSPNetDataset FeaturesInside./data you'll find the data needed to run our experiments. Blocksworld codes. all256256 contains all 7267 blocksworld images, whie train-test-val splits can be found in train256256, test256256 and eval256256Event-Sequence Data. This is v0.1 of the Blocksworld Image Reasoning Dataset. CSVs required to run End-to-End experiments can be found in./data/finalplans/. Images.

Lord Kelvin and the Age of the Earth. All celestial mass bodies have the ability to generate quakes, even the Earth's Moon. The larger the mass body, the greater the chance for quakes. The Earth alone averages tens of thousands of earthquakes, of varying intensities, each year. These quakes are the result of its consistent force of gravitational acceleration on the mass, whose intensity is based on its mass density. The greatest gravitational force is expressed from within the center of mass, where the density is the greatest.

Increase the density of a mass and you increase the probability for quakes. A spinning mass provides for an even greater probability of quakes, as the varying stratified layers of the mass are massaged into place as the mass body attempts to adapt to the gravitational forces being applied to it. Mars is no different in any of these respects relevant to its gravitational center of mass.As a side note, the architectural design for a martian research station takes advantage of the spherical shape.

The spherical design results in highly efficient and effective air circulation when either facing towards or away from the sun. Less surface area makes these buildings less susceptible to temperature changes, and thus, inexpensive to heat and cool as compared to rectangular structures. Per the NASA paper 'The Second Conference on Lunar Bases and Space Activities of the 21st Century, volume 1', the structural integrity of this spherical design increases in a low gravity environment. This is a great advantage for surviving martian quakes may be rhythmically longer in duration than earthquakes.As science fiction imitates science fact, you can gain a greater appreciation of what it would be like to build and live on the moon through reading the epic novel, ‘Shadow-Forge Revelations’.

Published:August 10, 2007

This nearly equatorial view shows cratered regions on Enceladus in the central part of its leading hemisphere and high northern latitudes. Much of the rest of the geologically active moon is relatively crater free and covered by fractures and folds.

North on Enceladus (505 kilometers, or 314 miles across) is up.

Jenga tower game. System Dread uses a very simple system. If you pull and succeed you succeed in your action. When you try to take a challenging action pull one or more blocks from the tower (a stack of blocks, such as Jenga or the like), as dictated by the GM.

The image was taken in polarized green light with the Cassini spacecraft narrow-angle camera on June 28, 2007 at a distance of approximately 293,000 kilometers (182,000 miles) from Enceladus. Image scale is 2 kilometers (1 mile) per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov . The Cassini imaging team homepage is at http://ciclops.org .

Credit: NASA/JPL/Space Science Institute