In today’s paper, the authors use Cepheid distance moduli to study the structure of the SMC.
How many spiral arms does the Milky Way have? You might be surprised to learn that astronomers are still not completely sure.
More than 50 years ago, a Norwegian astronomer named Sjur Refsdal outlined an interesting new method for calculating the Hubble constant. Last November, astronomers found the perfect test case.
Cepheids are bright enough that we can use them to measure distances to other galaxies, but their luminosities also makes detecting their companions particularly difficult. So how do astronomers find their uncover their secret partners? Today’s paper takes a look…
The first stars may have formed in clusters, rather than in isolation as previously thought. What would these clusters look like?