200 Years Ago, the Sun Mysteriously Turned Blue. Scientists Finally Know Why
In 1831, a massive volcanic eruption cooled the Earth’s atmosphere by 1 degree Celsius and even caused the Sun to appear in ...
NASA astronaut Donald Pettit captures video of stunning auroras from International Space Station| Video
Auroras are beautiful lights seen near the North and South Poles. If you are near the North Pole, the lights are called ...