Images from the Hubble Space Telescope show that there are previously unknown white dwarfs orbiting around pulsar companions.
Today we take a closer look at rare system that might just be host to an even rarer Cepheid.
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…