page_title: Cosmology Large Angular Scale Surveyor
hierarchical_section_title: Cosmology Large Angular Scale Surveyor
caption_attribution_description: English: Cosmology Large Angular Scale Surveyor telescope at night
context_page_description: The Cosmology Large Angular Scale Surveyor is an array of microwave telescopes at a high-altitude site in the Atacama Desert of Chile as part of the Parque Astronómico de Atacama. The CLASS experiment aims to improve our understanding of cosmic dawn when the first stars turned on, test the theory of cosmic inflation, and distinguish between inflationary models of the very early universe by making precise measurements of the polarization of the Cosmic Microwave Background over 65% of the sky at multiple frequencies in the microwave region of the electromagnetic spectrum.
context_section_description: The Cosmology Large Angular Scale Surveyor (CLASS) is an array of microwave telescopes at a high-altitude site in the Atacama Desert of Chile as part of the Parque Astronómico de Atacama. The CLASS experiment aims to improve our understanding of cosmic dawn when the first stars turned on, test the theory of cosmic inflation, and distinguish between inflationary models of the very early universe by making precise measurements of the polarization of the Cosmic Microwave Background (CMB) over 65% of the sky at multiple frequencies in the microwave region of the electromagnetic spectrum.
caption: CLASS telescopes at night
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