Star Wires

  Oct 30, 2015 Galaxies are threaded through with filaments. The Herschel Space Observatory was launched with the largest spaceborne mirror ever constructed: 3.5 meters in diameter. Herschel was set to orbit around LaGrange point L2 in July 2009, to protect its liquid helium-cooled infrared detectors. However, Herschel’s helium coolant…

Continue reading

Resolving Rhea

  Oct 29, 2015 Rhea bears examination in light of electrical theories. Rhea is one of Saturn’s medium-sized moons, second only in size to Titan, with a mean diameter of 1528 kilometers. The entire visible surface of Rhea is covered in craters, making it a candidate for the most heavily cratered…

Continue reading

Little Giant

  Oct 23, 2015 Flying through a vapor plume from an ice moon. The Cassini spacecraft is preparing to fly by Saturn’s moon Enceladus on October 28, 2015 when it will pass though the mysterious plume of gas and water vapor erupting from the moon’s south polar region. At that…

Continue reading

Looking for Lightning

Looking for Lightning 4

Looking for Lightning By Andrew Hall One thing you can say about lightning – it’s not very subtle. Geomorphologist Stephan Grab and Geologist Jasper Knight at Johannesburg’s University of the Witwatersrand in South Africa have studied the Drakensberg Peaks in Lesotho and discovered the primary force shaping them is lightning. …

Continue reading