This interactive feature lets students compare the sizes of the planets in our solar system. Users can select two solar system bodies (planets, Sun, Earth's moon) and view side-by-side images at the same scale, along...
This image gallery showcases more than 100 meteorwrongs (objects misidentified as meteorites). There are explanations of why the rocks probably are not meteorites and suggestions of what they most likely are and why....
The Sun appears to shine at a constant rate. However, its magnetic field is actually constantly changing, and this affects energy output. These variations cause effects that extend throughout the solar system. This...
The Sun produces 'solar wind', a continuous flow of charged particles that can affect us on Earth. It may also release huge storms of charged particles, called coronal mass ejections, that can disrupt communications,...
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