With an orbit of 647 days, HD 20794 d is similar to Mars in our solar system. However, its orbit around the star is highly ...

The moon makes for an excellent guide to see Mars in the night sky tonight. As the sun sets this evening (Feb. 9), the moon will be shining brightly in the east, 93% illuminated in its waxing ...

Enjoy the Mars Triangle while it still lasts, for after mid-March it will be no more. We're now just past the midpoint of astronomical winter — that moment marking the midway point between ...