In ΛCDM, Λ refers to the cosmological constant – a parameter introduced by Albert Einstein to counter the effect of gravity ...

measures the redshift of light from distant galaxies. This allows scientists to track how the universe is expanding. Analysis of light from nearly 15 million galaxies indicates the universe may be ...

The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...

A re-examination of the distribution of powerful space explosions suggests that the Hercules-Corona Borealis Great Wall, a ...

The ratio between redshift and distance is the Hubble constant. Expansion of the universe had already been anticipated by theorists. In the early 1920s, Alexander Friedmann and Georges Lemaître ...

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 ...

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed—called the Hubble Constant—is measured in units of kilometers per second ...

If found, those jumps might point to past singularities — evidence of a universe that grows in pulses rather than through smooth, continuous expansion. “Given sufficient redshift resolution ...

In other words, the universe must be expanding. He announced his finding in 1929. The ratio of distance to redshift was 170 kilometers/second per light year of distance, now called Hubble's constant.

However, Gupta said, "By allowing this theory to coexist with the expanding universe, it becomes possible to reinterpret the redshift as a hybrid phenomenon, rather than purely due to expansion." ...

In other words, the universe must be expanding. He announced his finding in 1929. The ratio of distance to redshift was 170 kilometers/second per light year of distance, now called Hubble's constant.