When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

Voluminous clouds of cosmic dust permeate our galaxy, but only recently has software allowed detailed observations of the ...

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 ...

NASA/Don Pettit NASA astronaut Don Pettit used a camera with low light and long duration settings to capture this Jan. 29, 2025, image of the Milky ...

Astronomers have discovered strong evidence for the closest supermassive black hole outside of the Milky Way galaxy. This ...

Our Solar System is in motion and cruises at about 200 kilometres per second relative to the center of the Milky Way.

A star has been spotted shooting away from the heart of our galaxy at around 500 kilometres per second, giving astronomers ...

SPHEREx hopes to solve some of the universe's biggest mysteries, while PUNCH will study the sun’s outer atmosphere, the ...

Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they were independent galaxies, extremely large and distant. At the time ...

Milky Way photography can yield some stunning shots from here on Earth. But what if you had a vantage point at some 400km ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers using ...

In 2011, a project that surveyed the Milky Way galaxy for exoplanets — which are planets beyond our solar system — spotted an intriguing signal: They found two objects traveling together through the ...