The dark matter halo of a massive galaxy cluster takes shape, with small halos forming and merging into larger ones.
Tracing the pathlines of dark matter in the universe.
Exploring dark matter streams.
Small galaxies take shape in the early universe.
A view of a massive star in the early universe as it perishes in a supernova explosion.
Three stars in the early universe heat up and partly clear their surroundings before they are consumed in gigantic supernova explosions.
Large-scale structures and massive galaxies form in the early universe—the central galaxy in this visualization represents about 1 trillion solar masses.
A visualization of the speed of hydrogen gas in a rotating galaxy from the early universe. Yellow lines represent fast-moving gas; purple lines are regions of slower-moving gas.
A spiral galaxy.
A superbright star in the early universe charges up surrounding hydrogen, setting the stage for galaxy formation.