Studying the line spectra produced by hot gases and absorbed by cooler gases allows us to identify the elements in stars ... don’t produce a continuous emission spectrum. Black hydrogen ...

This causes line emission spectra to be produced, as shown below. This is not a continuous spectrum as only light of specific frequencies and specific colours are produced. Different types of ...

Pulsars are rapidly rotating neutron stars and are one of the most exotic objects in the Universe with a gravitational field second only to black holes. They have the strongest magnetic fields in the ...