If the mass of the Universe is large enough, the expansion will eventually decrease and the Universe will then collapse in on itself. The first observational evidence for its existence came from supernovae measurements, which showed that the universe does not expand at a constant rate; rather, the expansion of the universe is accelerating. Yes, the general consensus among cosmologists is that the rate of expansion of the universe is accelerating, though to be sure Their conclusions were based on analysis of Type Ia supernovae – the spectacular thermonuclear explosions of dying stars – picked up by the Hubble space … The unexpected faintness of high-redshift Type Ia supernovae (SNe Ia), as measured by two teams, has been interpreted as evidence that the expansion of the Universe is accelerating. 1/39 Strong evidence for an accelerating universe Nicola Vittorio in collaboration with B.S.

The 2011 Nobel Prize in Physics was awarded to researchers from the Supernova Cosmology Project and the High-z Supernova Search Team for the discovery of the accelerating expansion of the universe. Observations of supernova explosions halfway back to the Big Bang give plausible evidence that the expansion of the universe has been accelerating since that epoch, approximately 8 billion years ago and suggest that Five years ago, the Nobel Prize in Physics was awarded to three astronomers for their discovery, in the late 1990s, that the universe is expanding at an accelerating pace. However, if the density of matter in the Universe is less than a certain critical density, …

Is the universe accelerating? To answer these three questions that were rolled into one: 1. Back in 2011, three astronomers were awarded the Nobel Prize in Physics for their discovery that the Universe wasn't just expanding - it was expanding at an accelerating rate. The discovery led to the widespread acceptance of the idea that our Universe is dominated by a mysterious force called dark energy , and altered the … In this paper, I provide a historical analysis of the supernova cosmology evidence put forward by these teams for the accelerating universe… Astronomers have been puzzling over the expansion rate of the Universe and its mass for decades. Title: HighZ Supernovae: The Evidence for An Accelerating Universe 1 High-Z Supernovae The Evidence for An Accelerating Universe R. Mutel Departmental Astrophysics Seminar February 19, 2003 2 Outline Synopsis of 20th Century