For decades, scientists have worked to map the universe’s large-scale structure, testing cosmological models and ...

Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the ...

A new study reveals Quipu, a vast network of galaxy clusters and superclusters, being dubbed the largest structure in the known universe.

A study demonstrated the ability to resolve the gravitational redshift—a phenomenon where clocks at different gravitational potentials tick at different rates—using a millimeter-scale sample ...

I have published papers on molecular masers, the galaxy-massive black hole connection, cosmology, gravitational lenses, astrometry and proper motions, secular redshift drift, water and formaldehyde in ...