I'm not to sure what to think about this one. The kilogram isn't a thing anymore. Instead, it's an abstract idea about light and energy. Physicists have replaced the old kilogram, a 130-year-old, platinum-iridium cylinder weighing 2.2 pounds (1 kilogram) sitting in a room in...See more

Daily Earth and Sun Report 5.21.2019 Solar Wind: speed: 405.0 km/sec density: 3.2 protons/cm^3 All space weather is calm. No solar flares or intensified solar wind are expected today or tomorrow. 5:21 https://www.youtube.com/watch?v=vd4lK-aTuXk ............................................................................................................................................ #science #space #nature #earthscience #nasa

'You Are Here' is a video zooming into the earth starting from a rendition of the universal macrocosm. Don't mistake the galaxies for stars, especially near the beginning. This is a pretty amazing, quick journey through the Universe to our planet earth. The main clip is courtesy of Daniel Pomarède off the Cosmic V-Web ........................................................................................................................................... #space #universe #earth #video