The dwarf planet 1 Ceres is in conjunction with the Sun at 5 P.M. EST today. While this means we can't see Ceres for now, we ...

From supermoons to an eclipse and star parties at national parks, these captivating celestial phenomena will get Americans ...

The Cat's Eye Nebula, also known as NGC 6543, is a visual "fossil record" of the dynamics and late evolution of a dying star. The Horsehead Nebula is a dark cloud of dust and gas in the constellation ...

Solar masses are a unit of measurement used in astronomy to express the mass of other celestial objects in comparison to the ...