article_snippet.sent: a high-resolution spectrograph takes starlight from the telescope and spreads a high-resolution spectrograph into a rainbow of colours, splitting the light into a spectrum of thousands of different wavelengths that can be measured .
article_snippet.sent: a high-resolution spectrograph takes starlight from the telescope and spreads a high-resolution spectrograph into a rainbow of colours, splitting the light into a spectrum of thousands of different wavelengths that can be measured with great precision.