Answer: For near stars, astronomers use a method called parallax. During Earth’s orbit, near stars seem to shift their position against the farther stars. This is called parallax shift. By ...

Scientists using the James Webb and Hubble space telescopes have confirmed one of the biggest head-scratchers in modern ...

And deep in the Milky Way, lies a Cepheid star four times larger than the sun — but that’s not the shocker. Within that star, which is named V470 Cas, is a rich layer of lithium. Astronomers ...

The findings, published in The Astrophysical Journal, reveal new details about the star's size, appearance, and characteristics. Polaris, a Cepheid variable star, is the brightest member of a ...

Leavitt discovered 2,400 variable stars, about half of the known total in her day. Through these discoveries came her most important contribution to the field: the study of cepheid variable stars ...

In commemoration of Edwin Hubble's discovery of a Cepheid variable class star, called V1, in the neighboring Andromeda galaxy 100 years ago, astronomers partnered with the American Association of ...

At the Harvard College Observatory in years around 1900, women were hired to make measurements of astronomical data and do ...

Photo: Andromeda nebula plate with Hubble's handwritten circle around the variable star he discovered In 1919 American astronomer Edwin Hubble began work at the Mount Wilson Observatory in ...