Looking for a sky event this week? Check out our full Sky This Week column. December 9: Dione and Tethys trade places Neptune is stationary at 7 P.M. EST, ending its retrograde motion. The ice giant ...

Look to the southeastern horizon in the hours following sunset on Nov. 29 — you'll be able to see the moon shine close to the ...

New NASA and ESA images show interstellar comet 3I/ATLAS erupting with fresh activity as it races toward its closest approach ...

Mercury's retrograde motion may have appeared to cause setbacks but there is a powerful message about perseverance and ...

The astrology forecast for December 2025 brings a Sagittarius stellium, a full supermoon, and the winter solstice, according to astrologer Nina Kahn.

Amateur astronomers using a mid-sized telescope of around 6 inches in aperture will be able to enjoy particularly clear views ...

Far beyond the bright planets, in the dim outskirts of the Solar System, astronomers keep stumbling on objects that refuse to ...

The interstellar comet 3I/ATLAS challenges physics with a missing dust tail, a forward anti-tail, and strange composition.

When we think creatively, produce novel ideas, or otherwise have “Eureka” moments, we may actually unlock access to a dimension outside of our everyday perception, according to the controversial ...

Overview On Dec. 10, Neptune will conclude its retrograde phase, which began back in July, and will resume its forward motion ...

Gravity and motion make time pass faster on Mars than Earth, reshaping navigation, communication, and future crewed missions.

Jupiter's retrograde motion, lasting until March 2026, signals a period of introspection and careful planning across all zodiac signs. This celestial event encourages a pause to re-evaluate emotional ...