Redshift occurs because older stars end up farther away as the universe continues to expand. Red is also the longest wavelength in the visible light spectrum, so faraway stars look redder since ...

That star existed when the universe was about 4 billion years old, or 30 percent of its current age, at a time astronomers refer to as a “1.5 redshift”. Scientists use the term “redshift ...

This indicated the stars were moving away from Earth (just ... this phenomenon was termed 'redshift'. Figure caption, Lower diagram shows spectrum of light redshifted from a distant galaxy moving ...

Mysterious little red dots threatened to overhaul modern cosmology—but new research may have solved the celestial conundrum.

I work on theories of galaxy formation, reionization, first stars, primordial metal production, and numerical hydrodynamical simulations of high-redshift galaxies and the multi-phase intergalactic ...

Astronomers see red shift in virtually all galaxies. It is a result of the space between the Earth and the galaxies expanding. This expansion stretches out the light waves during their journey to ...