What is the origin of the letters used in star classification? Why didn't astronomers use ABCD? J. HaldimanChicago, Illinois ...

Stark broadening, the widening of spectral lines due to the perturbing influence of electric fields from electron collisions, plays a pivotal role in the analysis of stellar atmospheres. This ...

An international team of astronomers has conducted optical and near-infrared observations of a supernova designated SN 2022ngb. As a result, it was found that SN 2022ngb is a faint and slow-evolving ...