In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

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 ...

While the events observed around Sgr A* are dramatic, this black hole is not as active as some at the center of other ...

Exciting February sky events include Venus at its brightest and closest to Earth, the moon occulting the Pleiades, and a ...

Spanning 11,000 sq km of protected, pristine wilderness, Jasper National Park offers a one-of-a-kind destination for ...

From planets and constellations, to eclipses and the Aurora Borealis, here's what to look for in the sky this spring ...

In 1610, astronomer Galileo Galilei used the newly invented telescope to show that the Milky Way was composed of a ... plates recorded images of the night sky using a light-sensitive emulsion ...

Have you ever looked at the beach and wondered how many grains of sand there are? That can be mind-boggling to think about. Scientists estimate that, depending on the grain size and density, a single ...

This sunlight reflected from Earth ... sky objects and winter constellations. Use this opportunity to photograph the Beehive Cluster, the Pleiades, or the faint glow of the winter Milky Way.

Don Pettit’s been snapping away in orbit again. This time, the NASA astronaut has captured a stunning image of the Milky Way from the International Space Station (ISS) . It also features Earth and ...

A nebula that neighbors the Milky Way galaxy happens to be a powerhouse of forging stars, "a bouquet of thousands of stars in ...