The sun will be turned into darkness, and the moon into blood, before the great and glorious day of the Lord comes.
The sun going dark and the moon turning red are supernatural warning signs rather than predictable astronomical events.
Astronomy
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The cited passage
What current science says
Solar eclipses happen when the Moon passes between Earth and the Sun — roughly 2-5 per year somewhere on Earth. Lunar eclipses (the 'blood moon') happen when Earth's shadow falls on the Moon, and its reddish color comes from sunlight refracting through Earth's atmosphere — the same Rayleigh scattering that makes sunsets red. Both are so predictable that NASA publishes eclipse schedules centuries in advance. The next total solar eclipse visible from your area? Already calculated to the second. These events have been happening every year for billions of years. They're not signals — they're geometry.
What the text says
This comes from Acts 2:20. The text says 'the sun shall be turned into darkness, and the moon into blood' — presenting solar and lunar eclipses as divine omens signaling the end times rather than routine orbital mechanics.
Three honest ways to read this passage
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As history
The text records how its authors understood the world with the knowledge they had. Read this way, a difference from modern science is a window into the ancient mind, not a failure.
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As accommodation
The text speaks to its first audience in their own terms, to make a point that isn't mainly about physics or biology. Read this way, the scientific detail is the vehicle, not the cargo.
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As contradiction
The text makes a claim about the physical world that modern findings dispute. Read this way, the difference is a genuine factual disagreement worth naming.
GEBible doesn't pick one of these for you. Each entry shows the passage, what it says, and what current science says — nothing more.