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Planck: First results
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The Satellite now known as the Planck Surveyor was first conceived in the mid-1990s, in the wake of the results from NASA’s COBE Satellite, the first to detect primordial anisotropies in the Cosmic Microwave Background (CMB), light from about 400,000 years after the big bang. (I am a relative latecomer to the project, having only…
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Hard Rock in the Solar System
The Zodiacal Light is a fuzzy glow visible in the morning and evening sky, stretching along the line along which the constellations of the zodiac appear — the ecliptic that we now know to be the plane made up of the sun and the orbits of the planets. Observations of the zodiacal light show it…
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