The spacecraft collected new data on Mercury using its Mercury Radiometer and Thermal Infrared Spectrometer, or MERTIS. The ...

The images reveal a haunting view of this rocky world, often referred to as the "Problem Child of the Solar System" due to ...

Find the dark and gather your wishes, my babies: the annual Geminid meteor shower is upon us. The Geminids are the best and ...

Your mind might be on overdrive thanks to from Mercury’s moonwalk on your sun sign. If you’re feeling reflective, start ...

In astronomy, what does retrograde mean? And what connection does it have to astrology? We explain how planets move across ...

Humankind accomplished new feats in space this year, including scooping up some of the moon’s farside and launching a probe to Jupiter’s moon Europa.

This January, the seven visible planets will align in the sky in a “planet parade.” The rare celestial event will start just ...

Jupiter reaches a stunning opposition, Mars is brilliant, Saturn and Venus light the evening sky, and Mercury rises before ...

We’ve reached the halfway point of Mercury’s apparent retrograde motion in the sky. How are the knots in your head? Have you ...

A partial solar eclipse. Numerous eye-catching planetary get-togethers. Saturn's rings perform a vanishing act. In the ...