Category Archive: Space

Coming to Terms with Turbulence

This Landsat 7 image of clouds off the Chilean coast near the Juan Fernandez Islands (also known as the Robinson Crusoe Islands) shows a unique pattern called a "von Kármán vortex street." Study of this classic "flow past a circular cylinder" has been very important in the understanding of laminar and turbulent fluid flow that controls a wide variety of phenomena, from the lift under an aircraft wing to Earth's weather. Photo/NASA

by Rosalind O’Brien “Turbulence is the graveyard of theories,” according to the renowned physicist Hans W. Liepmann, but scientists haven’t given up yet. Based on a turbulence lecture given by Prof. Mark Rast at the Laboratory for Atmospheric and Space Physics last Wednesday, it’s at least going to be a full and interesting graveyard. Turbulence, …

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Reverence for Apollo a Form of Necrophilia – Neil deGrasse Tyson

Neil deGrasse Tyson at Macky

by Brendon Bosworth U.S. space exploration has atrophied and something needs to be done about it. This was the message from famed astrophysicist, and director of New York’s Hayden Planetarium, Neil deGrasse Tyson who delivered a scathing appraisal of the current state of space research to a packed house at CU-Boulder’s Macky Auditorium Wednesday night. …

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Our Violent Star: Solar Storms and Space Weather

Space weather encompasses a variety of phenomena that occur on Earth as a result of changing conditions on the sun. It can come in many forms that result from different processes on the sun — some more benign than others.