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

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

Today, we'll look at the strange forces that drive the acceleration of its expansion, as well as one of the most tantalizing open questions in modern astronomy ... brighter a Cepheid is, the ...

When we gaze up at the night sky, it’s hard not to wonder about the vastness of the universe and its origins. The universe, ...

In modern astronomy, this method observes stars that ... was to resolve one of the largest remaining uncertainties with the Cepheid “rung” of the cosmic distance ladder: field crowding of ...

Cepheid variables are a special class of pulsating stars that serve as crucial "standard candles" in astronomy. These cosmic beacons help us measure vast distances across the universe.

In this episode, Astronomy magazine Editor Dave Eicher invites you to head out soon and look at the planets in the evening sky. The highest is Mars, the so-called Red Planet. The giant planet ...