Researchers suggest that there may be new physics to explain the inconsistency of the Hubble yardstick

Improved Hubble yardstick gives fresh evidence for new physics in the universe

"The team's ( prof Riess) new study extends the number of stars analyzed to distances up to 10 times farther into space than previous Hubble results

This means that the acceleration itself might not have a constant value in the universe but changes over time in the universe.

 Riess shared a Nobel Prize for the 1998 discovery of the accelerating universe

 Yet another attractive possibility  ( according to Quantum FFF Theory) is that dark matter (an invisible form of matter not made up of protons, neutrons, and electrons) interacts more strongly with normal matter or radiation than previously assumed."
Geplakt uit <https://www.sciencedaily.com/releases/2018/02/180222162005.htm>

For the Quantum FFF Theory solution , see:

Dipole Repeller Gravity Effects at Different Universal Scales as the Origin of Large Scale and Local Quantum Gravity and Hubble Redshift.

http://vixra.org/pdf/1708.0083v1.pdf

Sabine Hossenfelder tries to understand how dark matter forms galaxies

see:

http://backreaction.blogspot.nl/2018/02/shut-up-and-simulate-in-which-i-try-to.html

 for the answer, see:

  http://vixra.org/pdf/1712.0122v1.pdf

The Massless Axion-Higgs Vacuum Rigid String particle, even in Micro and Macro Dark Matter Black Hole Nuclei.

and According to Quantum FFFTheory suggestion, Dark matter is the same as new physics black holes, able to split and pair into Herbig haro systems with star formation in between, as observed in Cygnus A:

The young star mystery around the MW center.

"The fact that these stars exist so close to the supermassive black hole is unusual because they are so young; how they could've formed in such a hostile environment is a mystery." 

However Quantum FFF Theory says: all BHs are equipped with a narrow Fermion repelling horison producing Fermion pairs. positive and negative charged, able to form positrons and Neutrons according to my new physics 3D particle model  !! see: http://vixra.org/pdf/1712.0122v1.pdf  and:
http://vixra.org/pdf/1103.0002v4.pdf 

See for plasma production at the BH horizon below:

"Composite Higgs" models made from monopole string theory photons / Gluons

In Quantum FFF Theory, the Higgs Quantum knot of 125 GeV is assumed to be made out of monopole magnetic photons able to interfere with each other into a three particle knot.

However, the heavier Higgs particle are supposed to be a combination with the 375 GeV Higgs made out 4x xray photons ( see images below) 

However, All massive Higgs particles are assumed to be the base for stable- and unstable ( Ball lightning) black holes.

The mass less Axion Higgs ( ring shaped) is assumed to be the oscillating vacuum particle and responsible for dark energy and Casimir effect. 

See also: 

The Massless Axion-Higgs Vacuum Rigid String Particle, Even in Micro and Macro Dark Matter Black Hole Nuclei.

 http://vixra.org/pdf/1711.0112v1.pdf 

( Wikipedia: ) In particle physics, composite Higgs models (CHM) are speculative extensions of the Standard Model (SM) where the Higgs boson is a bound state of new strong interactions. These scenarios are the leading alternative to supersymmetric models for physics beyond the SM presently tested at the Large Hadron Collider (LHC) in Geneva

Quantum Gravity Pressure Differences between Black Holes and (Neutron) stars, or Planets.

To fill a little hole in the swampland, I would suggest:
First, that there are no attraction forces in the universe.
2e: the Higgs field ( called Axion Higgs particle based field) has no mass only oscillating energy ( Casimir effect)
3e: gravitons and all other Photons and Gluons are Axion Higgs particles transformed by collision with spinning propeller shaped Fermions or Bosons..
4e: The New Black Hole is a compressed but resiliant Axion-Higgs field particle nucleus.
5e: Stable Black holes do not produce gravitons but produce fermion pairs at a small globular horizon leading to real plasma, which is negative charged from the outside.
Conclusion Gravitons do not escape form the black hole.!!!
Only Space itself does the gravity job for black hole surfaces..
Also called emergent gravity: http://vixra.org/pdf/1710.0050v1.pdf
For Fermionic matter like (Neutron) stars Gravitons are assumed to push back as a balancing element between two pressure fields..
see also: https://bigbang-entanglement.blogspot.nl/

BH nucleus and Neutron star "not to scale"

 According to Quantum FFF Theory, Gravity should be a dual pressure effect between the small pressure of pushing gravitons contra the dark Casimir emerging oscillating quantum vacuum lattice. In combination with the recoil of black hole resilience a lot more can be explained, such as the cyclic universe.
As a consequence, stable growing Black Hole nuclei are resilient Axion Higgs Quantum Knots, which give balancing recoil to the outside pressure of  the oscillating dark energy based Axion Higgs vacuum field. 

As a result, NO pushing gravitons are produced or emitted as is the case in Neutron stars and normal matter, assumed to be the origin of dual pressure quantum gravity postulated by Quantum FFF Theory ( Function Follows Form)