Sunstorm Read Online Free PDF Page B

had actually
noticed
him. Eugene said, “So what got you interested in the sun?”
    Mikhail shrugged. “I liked the practical application. The sky reaching down to the Earth . . . Most cosmological entities are abstract and remote, but not the sun. And besides, we Russians have always been drawn to the sun. Tsiolkovski himself, our great space visionary, drew on sun worship in some of his thinking, so it’s said.”
    “Maybe it’s because you don’t get to see much of it so far north.”
    Mikhail was taken aback. Was that an actual joke? He forced a laugh. “Come,” he said, standing. “I think it’s time we visited the monitor room.”
             
    They had to pass through a short, low tunnel to another dome. And in the monitor room, the younger man stared around, openmouthed.
    The room was a twenty-first-century shrine to Sol. Its walls were coated by glowing softscreens that showed images of the sun’s surface or its atmosphere, or the space between Earth and sun, crowded with dynamic structures of plasma and electromagnetism, or Earth itself and its complicated magnetosphere. The images were displayed in multiple wavelengths—visible light, hydrogen light, calcium light, infrared and ultraviolet, at radio wavelengths—each of them revealing something unique about the sun and its environment. Even more instructive to eyes trained to see were the spectral analyses, spiky graphs that laid bare the secrets of Earth’s star.
    This was a graphic summary of the work of the Space Weather Service. This lunar post was just one of a network of stations that monitored the sun continually; there were sister stations on all the continents of Earth, while satellites swarmed on looping orbits around the sun. Thus the Service kept myriad eyes trained on the sun.
    It was necessary work. The sun has been shining for five billion years, breathing out heat and light and the solar wind, a stream of high-energy charged particles. But it is not unchanging. Even in normal times the solar wind is gusty; great streamers of it pour out of coronal holes, breaks in the sun’s outer atmosphere. Meanwhile sunspots, cooler areas dominated by tangles of magnetic fields, were noticed by humans on the sun’s surface as early as the fourth century before Christ. From such troubled areas, flares and immense explosions can spew high-frequency radiation and fast-moving charged particles out into space. All this “weather” batters against the layers of air and electromagnetism that shield the Earth.
    Through most of human history this went unnoticed, save for the marvelous aurorae irregularly painted over the sky. But if humans aren’t generally vulnerable to the storms in space, the electrical equipment they develop is. By 2037 it was nearly two centuries since solar-induced currents in telegraph lines had started to cause headaches for their operators. Since then, the more dependent the human world became on its technology, the more vulnerable it became to the sun’s tantrums—as Earth was learning that very day.
    For a fragile, highly interconnected high-technology civilization, living with a star, it had been learned, was like living with a bear. It might not do you any harm. But the least you had to do was watch it, very carefully. And that was why the Space Weather Service had been set up.
    Though now led by the Eurasian Union, the Space Weather Service had developed from humbler beginnings in the twentieth century, starting with the Americans’ Space Environment Center, a joint enterprise of such agencies as NASA, the National Oceanic and Atmospheric Administration, and the Department of Defense.
    “Back then the data gathered were patchy,” Mikhail said. “Scavenged from science satellites dedicated to other purposes. And forecasting was just guesswork. But a few solar-storm disasters around the solar max of 2011 put paid to
that.
These days we have a pretty comprehensive data set, continually updated in real time. The