Category: Cool Stuff

Earth from Space

“A time-lapse of Planet Earth, created from images produced by the geostationary Electro-L Weather Satellite. The images were obtained beginning on May 14th, and end on May 20th. The images are the largest whole disk images of our planet, each image is 121 megapixels, and the resolution is 1 kilometer per pixel. They are taken every half hour, and have been interpolated (smoothed) to create this video. The images are taken in four different wavelengths of light, three visible, and one infrared. The infrared light is reflected by forests and vegetation, which appear orange in these images.”

 

Laniakea: Our home supercluster

Superclusters – regions of space that are densely packed with galaxies – are the biggest structures in the Universe. But scientists have struggled to define exactly where one supercluster ends and another begins. Now, a team based in Hawaii has come up with a new technique that maps the Universe according to the flow of galaxies across space. Redrawing the boundaries of the cosmic map, they redefine our home supercluster and name it Laniakea, which means ‘immeasurable heaven’ in Hawaiian.