Interactive Seismic Wave Chart - Not sure how I missed this for so long, but this is a really cool tool for demonstrating how to use the seismic wave lag time chart.
Star-forming galaxies like grains of sand - Thousands of galaxies crowd into this Herschel image of the distant Universe. Each dot is an entire galaxy containing billions of stars.
What do farts have in common with earthquakes? – "we can make general predictions about the phenomenon in terms of magnitude and recurrence, but the size and timing of each specific event are random"