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Live and recent images of the Sun from telescopes around the world and satellites in space. Spanning the spectrum from X-rays to infrared images, these views reveal sunspots, solar flares, and ...Read more Brought to you by CISM
Atmospheric optics shows us how light behaves as it passes through the atmosphere. From rainbows to the northern lights, these optical features allow us to learn about atmospheric conditions ...Read more
Stars are huge balls of gas and plasma that give off heat and light. Our Sun is an "average" star - some stars are much larger or smaller. Stars are powered by nuclear fusion in their cores ...Read more
4/18 Great San Francisco Earthquake, estimated magnitude of 7.8, on San Andreas Fault in 1906
4/19 F5 tornado hits Brownwood, Texas on this date in 1976
4/19 Soviet Union launces Salyut 1, First Space Station, in 1971