In 1831, a baffling celestial phenomenon left humanity questioning the heavens: the sun turned blue. This eerie spectacle, visible across vast swathes of the globe, plunged societies into ...

Back in August 1831, scientists of the time were left baffled after the sun appeared to turn blue and now experts think they know why it happened. Nearly 200 years ago, a two-year-long period of ...

In August 1831, reports also emerged from around the world – including China, Europe, the US, and the Caribbean – of the Sun appearing "blue, purple, and green." This phenomenon was likely ...

The European Space Agency (ESA) has released an audio-visual representation of solar activity over the last three years, pulling data from its Solar Orbiter probe, which it runs with NASA.

Researchers have discovered the origins of a 200-year-old volcanic eruption that ejected so much sulfur into the atmosphere that it changed the climate and made the sun look blue. In 1831 ...