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Hubble detects changes in universe’s rate of expansion that can not be explained by current physics 

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‘Something weird’ is happening with how our universe is expanding and it can’t be explained by current physics, NASA has revealed.

Data from the Hubble Space Telescope has shown there is a big discrepancy between the universe’s current rate of expansion in comparison with the speed right after the Big Bang.

The long-lasting orbital observatory has just accomplished a 30-year marathon of information collection.

With this information, Hubble was then in a position to discover greater than 40 ‘milepost markers’ of space and time to assist scientists more accurately measure the expansion rate of the universe. 

Nonetheless, the more precise these measures develop into the more they indicate that ‘something weird’ is occurring, the US space agency said.

‘The reason for this discrepancy stays a mystery. But Hubble data, encompassing a wide range of cosmic objects that function distance markers, support the concept something weird is happening, possibly involving brand latest physics,’ NASA officials said. 

‘Something weird’ is happening with how our universe is expanding, NASA has revealed. Latest data from the Hubble Space Telescope shows an enormous discrepancy between the universe’s current rate of expansion in comparison with right after the Big Bang

Hubble discovers a cosmic discrepancy 

Hubble measured 42 of the supernova mileposts – greater than double the previous sample of cosmic distance markers. 

Nonetheless, when it began gathering information concerning the universe’s expansion, a discrepancy emerged. 

Hubble’s measurements suggest the speed is roughly 45 miles (73 kilometres) per megaparsec, but when taking into consideration observations of the deep universe, this slows all the way down to about 42 miles (67.5 kilometres) per megaparsec. 

A megaparsec is a measurement of distance equal to 1 million parsecs, or 3.26 million light-years. 

This suggests that the universe’s evolution and expansion is more complicated than we had realised, and that there’s more to find out about how the universe is changing. 

Experts have been studying the universe’s expansion rate for the reason that Twenties using measurements by astronomers Edwin P. Hubble and Georges Lemaître.

When NASA conceived of a big space telescope within the Seventies, one in every of the first justifications for the expense and extraordinary technical effort was to give you the option to resolve Cepheids – stars that brighten and dim periodically, seen inside our Milky Way and external galaxies. 

Cepheids have long been the gold standard of cosmic mile markers since their utility was discovered by astronomer Henrietta Swan Leavitt in 1912. 

To calculate much greater distances, astronomers use exploding stars called Type Ia supernovae.

Combined, these objects built a ‘cosmic distance ladder’ across the universe and are essential to measuring the expansion rate of the universe, called the ‘Hubble constant’ after Edwin Hubble. 

That value is critical to estimating the age of the universe and provides a basic test of our understanding of the universe.

It will possibly be used to predict how briskly an astronomical object at a known distance is moving away from Earth, although the true value of the Hubble constant stays up for debate.

Almost 25 years ago, astronomers also discovered dark energy, which NASA describes as ‘a mysterious repulsive force accelerating the universe’s expansion’.  

The brand new research by the Hubble Space Telescope measured 42 of the supernova mileposts – greater than double the previous sample of cosmic distance markers. 

Hubble (pictured) orbits Earth at a speed of about 17,000mph (27,300kph) in low Earth orbit at about 340 miles in altitude, slightly higher than the International Space Station (ISS)

Hubble (pictured) orbits Earth at a speed of about 17,000mph (27,300kph) in low Earth orbit at about 340 miles in altitude, barely higher than the International Space Station (ISS)

HUBBLE: KEY FACTS

Mission duration: 32 years & 29 days

Manufacturer: Lockheed Martin and Perkin-Elmere 

Mass: 24,490lb 

Launch date: April 24, 1990

Launch site: Kennedy Space Center, Florida

Began service: May 20, 1990

First remark: Jupiter (March 1991)

Orbit: 333-336 miles 

Wavelengths: Near-infrared, visible light, ultraviolet

Nonetheless, when it began gathering information concerning the universe’s expansion, a discrepancy emerged. 

Hubble’s measurements suggest the speed is roughly 45 miles (73 kilometres) per megaparsec, but when taking into consideration observations of the deep universe, this slows all the way down to about 42 miles (67.5 kilometres) per megaparsec. 

A megaparsec is a measurement of distance equal to 1 million parsecs, or 3.26 million light-years. 

This suggests that the universe’s evolution and expansion is more complicated than we had realised, and that there’s more to find out about how the universe is changing. 

NASA said astronomers are ‘at a loss’ to determine why there are two different values, but suggested we can have to rethink basic physics. 

‘You might be getting probably the most precise measure of the expansion rate for the universe from the gold standard of telescopes and cosmic mile markers,’ said Nobel Laureate Adam Riess, of the Space Telescope Science Institute (STScI) and the Johns Hopkins University in Baltimore, Maryland.

He leads a scientific collaboration investigating the universe’s expansion rate called SHOES, which stands for Supernova, H0, for the Equation of State of Dark Energy. 

‘That is what the Hubble Space Telescope was built to do, using one of the best techniques we all know to do it,’ Riess said.

‘This is probably going Hubble’s magnum opus, because it might take one other 30 years of Hubble’s life to even double this sample size.’

Riess said it was best to see the expansion rate not for its exact value at its time, but its implications. 

‘I do not care what the expansion value is specifically, but I prefer to use it to learn concerning the universe,’ he added. 

NASA now hopes to realize more clarity concerning the expansion of the universe with the assistance of the James Webb Space Telescope, launched in December last yr.

It should allow scientists to see latest mileposts which are even farther away and in higher resolution.

WHAT IS DARK ENERGY?

Dark energy is a phrase utilized by physicists to explain a mysterious ‘something’ that’s causing unusual things to occur within the universe. 

The universe is filled with matter and the attractive force of gravity pulls all matter together. 

Then got here 1998 and the Hubble Space Telescope observations of very distant supernovae that showed that, an extended time ago, the universe was actually expanding more slowly than it’s today.

The universe is not only expanding, but it is expanding faster and faster as time goes by,' Dr Kathy Romer, scientist at the Dark Energy Survey told MailOnline, as illustrated in this Nasa graphic

The universe is just not only expanding, however it is expanding faster and faster as time goes by,’ Dr Kathy Romer, scientist on the Dark Energy Survey told MailOnline, as illustrated on this Nasa graphic

So the expansion of the universe has not been slowing on account of gravity, as everyone thought, it has been accelerating. 

Nobody expected this, nobody knew tips on how to explain it. But something was causing it.

‘The universe is just not only expanding, however it is expanding faster and faster as time goes by,’ Dr Kathy Romer, scientist on the Dark Energy Survey told MailOnline.

‘What we might expect is that the expansion would get slower and slower as time goes by, since it has been nearly 14 billion years for the reason that Big Bang.’

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