Knowledge Nexus on Instagram: "The Chicxulub asteroid measured between 10 and 15 kilometers in diameter based on crater geometry and global mineral layers. Impact speed reached about 20 kilometers per second. Total energy release equaled billions of nuclear bombs. The collision produced a crater about 180 kilometers wide in the Yucatan region. Melted rock sheets record rapid heating. Shock patterns in quartz show extreme pressure. Dust and sulfur lifted into the upper atmosphere and reduced sunl