In fact, some of the earliest cultures developed as early as 7000 BC, marked by a very early transition from the hunter-gatherer lifestyle into one of sedentary agriculture.
Before the arrival of the conquistadors from the Spanish Empire, this region was the home of many thriving cultures for well over a millennia. Mesoamerica is a historic, geographic, and cultural region of North America that spans roughly from modern day central Mexico through Belize, El Salvador, Guatemala, Nicaragua, Honduras, and Costa Rica. It’s about to get bloody! The Origins Of Aztec Violence Today we are descending into the brutal traditions of Aztec violence. While the Spanish conquistadors were appalled by the viciousness and the extent of the Aztec violence and mass human sacrifice, for the majority of Mesoamerican cultures this was an everyday occurrence, and for some a necessity. Nevertheless, the European conquerors brought to the light of the world many unique aspects of this civilization and human sacrifice was one of them. In just a few years, this ruling Mesoamerican force fell completely under the rule of the Spanish Empire. Alas, the expansion of modern European nations brought an abrupt and inglorious end to the Aztecs. Still largely shrouded in mystery, this colorful, complex culture was one of the crucial stages of all Mesoamerican civilizations and continues to be a well of new knowledge. The first is a prominence that erupted March 30, followed by a solar flare that was released by the sun April 8.The ancient history of the Aztec civilization is one of the most fascinating historical subjects, and for numerous reasons. This movie shows two events captured by the Solar Dynamics Observatory.
“After building this craft for eight years and finally getting it into the sky,” says Pesnell, “it’s just performing beautifully.” “It’s surprising that something so insubstantial, just a small pore,” could be the culprit, says Alan Title of Lockheed Martin’s Solar and Astrophysics Laboratory in Palo Alto, Calif., and lead scientist for the observatory’s atmospheric imaging assembly. It’s likely that the magnetic field from the sunspot drove the activity in the corona, scientists say. Images of the corona and the solar surface taken April 8 show disturbances in the corona around the time that a small, roughly Earth-sized sunspot disappeared. Observations of the sun’s magnetic field before the eruption should settle the ongoing debate about whether the twist is necessary to initiate the eruption, says solar physicist Spiro Antiochos of NASA–Goddard.Ī key advance, he adds, is the observatory’s ability to simultaneously observe both the magnetic field at the sun’s visible surface and the detailed structure of its outer atmosphere, or corona, at several temperatures. Images reveal that the disturbance contains a twist in its magnetic field, a feature that some solar physicists believe is necessary to initiate a solar eruption. On March 30 the observatory captured one of those eruptions as it lifted off the sun’s visible surface. “You can’t just look at one part of the sun” if you want to understand the forces that drive solar eruptions, says Dean Pesnell, project scientist for the observatory at NASA’s Goddard Space Flight Center in Greenbelt, Md. “We haven’t been able to do that before.” “The idea is to observe all of the sun all of the time, so you can see what happened before an important event occurs” says Philip Scherrer of Stanford University, lead scientist on the observatory’s helioseismic and magnetic imager. The observatory was launched February 11 and is expected to collect data for five years. On April 21 NASA released some of the first images recorded by the craft. These include pictures tracking the tangle of magnetic fields that drive solar activity and the roiling motion of gases that reveal the pattern of acoustic waves reverberating beneath the solar surface. Unlike several other solar observatories that are orbiting Earth, Solar Dynamics looks at the full disk of the sun in high resolution, taking images as often as every 1.25 seconds over a wide spectrum of wavelengths. When directed at Earth, these billion-ton parcels of magnetized gas can disrupt electrical power grids and satellites. An ultimate goal of the observatory is to better predict and understand the origin of giant eruptions, called coronal mass ejections, in the sun’s outer atmosphere.
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