Researchers can estimate an object’s distance using its redshift, to produce a 3D map of the Universe’s expansion history ...

A dazzling galaxy discovered by the James Webb Space Telescope (JWST) is forcing cosmologists to reexamine key assumptions ...

a hypothesis known as the 'tired light' theory suggested that light loses energy during its long cosmic journeys, leading to the redshift. However, as it failed to explain numerous observations ...

A tiny red speck, spotted by the James Webb Space Telescope, has set a date on an important era in the Universe's history. The speck, known as JADES-GS-z13-1-LA, is one of the earliest galaxies ever ...

Drawing upon data from Vesto Slipher and Henrietta Leavitt, Hubble demonstrated a correlation between galactic distance and redshift. ... We now know this is due to cosmic expansion. Space itself ...

As the light was shifted towards the red end of the spectrum (lower frequency/longer wavelength) this phenomenon was termed 'redshift'. Figure caption, Lower diagram shows spectrum of light ...

An international team has discovered a giant spiral disk galaxy in the early cosmos which is three times larger than similar ...

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 ...

A galaxy called JADES-GS-z13-1, observed just 330 million years after the Big Bang, has challenged existing theories by ...