The Einstein Probe was launched in January 2024 to study the high-energy universe, and among its instruments is its ...

Infant stars, or "protostars," haven't yet gathered enough mass to trigger the nuclear fusion of hydrogen to helium in their cores, the process which defines what a main sequence star is.

More massive stars than the Sun have a very different life cycle and follow the right hand path in the diagram above: \({Nebula}\rightarrow{protostar}\rightarrow{main~sequence~star}\rightarrow{red ...