Astronomers from the Czech Republic and Argentina have employed the Gemini South telescope to observe a yellow supergiant ...

the most important division in classifying stars is between the main sequence and the rest. In the first case, hydrogen fusion in the core is the dominant process, and temperature and mass relate ...

By applying a machine-learning technique called a "self-organizing map," they found 801 new white dwarf-main sequence (WDMS ... the relationship between a star's mass and its radius.