In 1925, grad student Cecilia Payne first proposed that stars were mostly made of hydrogen and helium and shaped our ...

Using the X-shooter instrument at ESO's Very Large Telescope (VLT), German astronomers have detected three new pre-white ...

How do scientists know what spectral lines belong to which compound ... have to separate the signature of hydrogen from the ...

Observations show that in some spectroscopic binaries, spectral lines from both stars are visible ... object in HD 34736 is a chemically peculiar helium-weak star with an effective temperature ...