"One is a measurement of how fast the universe is expanding today, as we see it", Riess added.
"This mismatch has been growing and has now reached a point that is really impossible to dismiss as a fluke".
The usual method for measuring the stars is incredibly time-consuming; the Hubble can only observe one star for every 90-minute orbit around Earth. Using a new method, the research team studied 70 Cepheid variables in the Large Magellanic Cloud, arriving at a Hubble Constant of 74.03 ks/s/Mpc. Astronomers using the NASA/ESA Hubble Space Telescope have significantly lowered the possibility that this discrepancy is a fluke. It's thanks to more precise measurements of Hubble's constant over the years that actually led to the inadvertent discovery of dark energy, a mysterious type of energy which we can not directly detect but which physicists are confident makes up at least 70% of the energy of the universe.
Next, the team combined their Hubble measurements with observations made by the Araucaria Project, a collaboration between astronomers from Chile, Europe, and the U.S. The Araucaria Project made distance measurements to the Large Magellanic Cloud via observations of the dimming of light as one star passes in front of its partner in eclipsing binary-star systems, according to the research team.
With this data, they have derived a new Hubble Constant: 74.03 kilometres (46 miles) per second per megaparsec. 'We are measuring something fundamentally different. Riess and his SH0ES (Supernovae H0 for the Equation of State) team have been on a quest since 2005 to refine those distance measurements with Hubble and fine-tune the Hubble constant.
Majority of Americans oppose impeachment, poll shows
Almost half of Americans, 47 percent, said he had obstructed justice, while 41 percent said he didn't obstruct justice. Only 37 percent of Americans polled said that they thought the president should be impeached.
Manchester City, Liverpool dominate PFA team of the year
In goal, Ederson was selected, replacing David de Gea, who was in the four previous editions of the illustrious selection. They've had 11 inclusions in the last four teams, with Harry Kane notching up four of those appearances by himself.
Chelsea face tough task to match Liverpool, Man City quality -Sarri
Indeed, they're winless in eight such games (D2 L6) since beating Tottenham 2-1 at Wembley in August 2017. Plenty is on the line this afternoon and both teams come into this game in not particularly good form.
The previous Hubble constant estimates have ranged from between around 67 to 73 kilometres per second per megasec.
That's about 9 percent faster than estimates based on the Planck data. Like many things in life that don't agree, this discrepancy has caused what cosmologists call a "tension" - an oddity that still needs explaining.
Earlier observations of that increased speed still had a 1 in 3,000 chance that astronomers were wrong, which is considered pretty high for an astrophysics result. Dark energy may also be the reason for the universe's accelerated expansion today.
Because cosmological models suggest that observed values of the expansion of the Universe should be the same as those determined from the Cosmic Microwave Background, new physics may be needed to explain the disparity. Data derived from Hubble observations has always been starkly different than earlier estimates of Universe expansion conducted by observing far more distant objects in the cosmos.
There are a number of ways to derive the Hubble Constant.
Another idea is that the universe contains a new subatomic particle that travels close to the speed of light. But like Riofrio, there are others who postulate that a changing speed of light cannot only account for a simplified explanation of an expanding Universe without invoking the need for dark energy, it can explain many other cosmological phenomena too.
The goal is to get this uncertainty down to 1 per cent.