A retired Tucson heart doctor won a national amateur astronomy award for helping University of Arizona scientists detect some ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

The case of mistaken identity was quickly resolved, but astronomers say it shows the need for transparency around craft in ...

Astrophotographers use sophisticated imaging technology to take and edit photographs that bring us the cosmos with startling ...

The mystery of the Hubble tension has deepened with the startling finding that the Coma Cluster of galaxies is 38 million ...

Instead of trying to break down the art of naming a child, let’s try something different and use art as inspiration for the ...

Polar bears aren't white, strawberries aren't berries, and the Earth isn't round—we'll have you rethinking everything you ...

Early 2025 is a good time for skygazing and spotting up to seven planets in the night sky – if you have a little help.

Astronomer Dean Regas gives us the lowdown on the best things to look out for this winter, from a “planet parade” to the ...

Look up! Six planets grace the sky this month in what’s known as a "planetary parade," and most will be able to be seen with ...

From west to east, Saturn, Venus, Neptune, Uranus, Jupiter and Mars will make an arc across Wyoming’s night sky in a parade ...