Monthly Archives: December 2022

Comets and the Christmas Star

The Star of Bethlehem, or the Christmas Star, has an important place in tradition. A mystery surrounds the history of this star, and searches for an explanation have concerned theologians, philosophers, and scientists for nearly 2,000 years. In this post, I focus on whether astronomers have identified a celestial body that could have been a Christmas star.

By |2022-12-15T13:32:42-07:00December 15th, 2022|Our Amazing Earth|6 Comments

Expanding Iceland

Erupting volcanoes are forming new real estate all around our planet. Beneath Iceland and Hawaii, hot lava upwelling from deep underground is hardening into rock. Hotspots create chains of volcanoes on these islands as a tectonic plate slowly crosses a mantle plume. In Iceland, there are also volcanic eruptions occurring from the location astride the spreading center known as the Mid-Atlantic Ridge. The result: LOTS of lava.

By |2022-12-03T09:55:42-07:00December 1st, 2022|Our Amazing Earth|8 Comments
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