Astronomers Are Baffled To Find That the Universe Is Expanding Too Fast; 'Not What We Expected' Astronomers routinely ...

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 center of these side-by-side images is a special class of star used as a milepost marker for measuring the universe’s rate of expansion – a Cepheid variable star. The two images are ...

Henrietta Leavitt joined the Harvard College Observatory as a volunteer in 1895. She was appointed to the permanent staff in 1902, and eventually became chief of the photometry department.

(1) THE determination of the past duration of solar radiation, and, consequently, the problem of the age of the inhabitable earth, imposes upon theories of radiation a difficulty the magnitude and ...

AI tools are transforming how we observe the world around us—and even the stars beyond. Recently, an international team ...

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 ...

NEW YORK – Danaher subsidiary Cepheid provided notice last week that it will lay off 167 employees from multiple California-based sites, according to a Worker Adjustment and Retraining Notification ...