For more than a hundred years, astronomers have been convinced that the Andromeda galaxy is on a collision path with the milky way, this is projected to occur in around 5 billion years. However, a ...

On Sunday November 23, 1924, 100 years ago this month, readers perusing page six of the New York Times would have found an ...

With this definition, the outer boundary of the Milky Way would go out much further than previously understood. In fact, the ...

Cepheid variable stars vary in size and brightness over a period ... did most of the labor-intensive legwork. The Andromeda Galaxy and the Milky Way Galaxy are on a collision course.

Cepheid variable stars vary in size and brightness over a period ... did most of the labor-intensive legwork.The Andromeda Galaxy and the Milky Way Galaxy are on a collision course.

Cepheid variable stars vary in size and brightness over a period related to average brightness ... but Henrietta Leavitt discovered the Cepheid variables in Andromeda and did most of the ...

These objects were actually the Andromeda and Messier 33 galaxies ... the distance to his Cepheid exceeded Shapley's size for the Milky Way. Over subsequent months, Hubble examined other spiral ...

We take a look at the current best predictions for what the solar system will look like throughout the rest of the Sun's life ...

A brand new image snapped by NASA's James Webb Space Telescope (JWST) reveals the intricate details of the core of the ...

when he observed the Andromeda Nebula. By identifying a Cepheid variable star, he proved that the nebula was not part of the Milky Way but a galaxy of its own. This discovery showed that the ...