AtLAST will open a new space of discoveries in many fields of Astrophysics and Cosmology, by enabling a major leap in sensitivity and mapping speed for (sub)mm single dish astronomical observation. Discover the four key science themes that drive the technology selections for AtLAST.

Galactic Plane of the Milky Way

To perform the deepest, highest resolution, and most complete survey of molecular gas clouds, dust, protostars, and protoplanetary disks in our own Galaxy and in the Local Group

The hidden components of the circumgalactic medium of galaxies

To detect and image the cold material stored within galaxy haloes that is invisible at other wavelengths. To provide a complete view of the cycling of baryons (i.e. gas and dust) in and out of galaxies, which controls galaxy evolution across cosmic times.

Sub-millimeter SDSS-like extragalactic survey

To perform the deepest, highest-resolution, widest and most complete imaging and spectroscopic survey at (sub)mm wavelengths of the extragalactic sky, similar to the Sloan Digital Sky Survey (SDSS) at optical wavelengths.

The spatially-resolved Sunyaev-Zel'dovich effect on galaxy and cluster-scales

To detect and resolve the thermal and kinetic Sunyaev-Zel'dovich (SZ) effect from the filaments connecting large scale structures between galaxy clusters, down to individual galaxies.