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 ...

Located approximately 27,000 light-years (one light year equals approximately nine trillion kilometres) from Earth — relatively close when it comes to galactic black holes — Sag A* has an estimated ...

Explore the James Webb Space Telescope's incredible discovery: a cosmic alignment revealing the teenage years of our Milky ...

Galaxies are astronomical objects composed of billions or even trillions of stars. Our Earth and solar system are just a tiny ...

Astronomers have spied a monster radio jet in the distant universe that’s twice the width of the Milky Way galaxy. The ...

Researchers said on Thursday that they had discovered twin-lobed radio jets they suspect were formed when the universe was ...

In about 4.5 billion years, the Andromeda Galaxy will collide with the Milky Way, resulting in a spectacular cosmic collision! Don’t worry, though – the distances between stars are vast ...

A century ago, Edwin Hubble first established that this so-called "spiral nebula" was actually very far outside our own Milky Way galaxy —at a distance of approximately 2.5 million light-years ...

From supermoons to a total eclipse to the national park’s biggest and best-attended star parties, these are the must-see celestial shows of the year ...

“We [will be able to] move quickly and map out very large areas of the sky,” adds Josh Schlieder, the telescope’s wide-field ...

Any potential findings could also shed light on the Milky Way's future because our galaxy is predicted to potentially collide with Andromeda in the next 5 to 10 billion years. The release of the ...