Astronomy

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A six planet alignment occurs when Mercury, Venus, Mars, Jupiter, Saturn, and Uranus appear in a relatively narrow arc in the sky from Earth’s perspective. The most recent wid...

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Jupiter remains the brightest planet in the night sky when it is in opposition, outshining all stars and most other planets. Tonight, Jupiter appears near its peak magnitude, ma...

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A blood moon is the popular name for a total lunar eclipse, when Earth passes directly between the Sun and the Moon and casts a shadow that turns the lunar disk a reddish hue. T...

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The Orionid meteor shower 2024 is active from October 2 to November 7, with the peak expected around October 21-22, according to the American Meteor Society. The shower is produ...

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The January new moon is the lunar phase when the Moon aligns between Earth and the Sun, making its near side face away from Earth and rendering it mostly invisible in the night...

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The new moon in July 2025 is scheduled for July 24 at 05:03 UTC, according to the latest astronomical data from authoritative timekeeping and observatory sources. This moment ma...

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Retrograde astronomy refers to the apparent backward motion of planets in the sky as observed from Earth, caused by differences in orbital speed and position. This phenomenon is...

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The Sun emits light across the visible spectrum, but when it appears red or orange, the main cause is Rayleigh scattering, which spreads shorter blue wavelengths and leaves long...

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When the Sun is near the horizon, its light travels through a thicker layer of Earth's atmosphere. Shorter blue wavelengths scatter away, while longer red and orange wavelengths...

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The brightest object in the western sky tonight is typically Venus, often called the evening star when it appears after sunset. Venus reaches peak brightness when it is near gre...