Read article 'Exploring the Hubble tension'
Exploring the Hubble tension
Cosmologist and theoretical physicist Licia Verde discusses the current tension between early- and late-time measurements of the expansion rate of the universe.
Read article 'Exploring the Hubble tension'
Read article 'Accelerators meet gravitational waves'
Accelerators meet gravitational waves
Gravitational waves crease and stretch the fabric of spacetime as they ripple out across the universe, potentially causing observable effects on beams in storage rings.
Read article 'ANAIS challenges DAMA dark-matter claim'
ANAIS challenges DAMA dark-matter claim
First results from the ANAIS experiment show no annual modulation, in conflict with longstanding results from the DAMA experiment.
Read article 'Lifting the veil on supernova 1987A'
Lifting the veil on supernova 1987A
High-energy X-rays reveal possible missing neutron star formed by the collapse of the famous supernova's progenitor star.
Read article 'Cosmic plasma-wakefield acceleration'
Cosmic plasma-wakefield acceleration
Recent studies suggest that plasma-wakefield acceleration also occurs naturally, potentially explaining the highest energy cosmic rays.
Read article 'Pulsars hint at low-frequency gravitational waves'
Pulsars hint at low-frequency gravitational waves
Observations of millisecond pulsars by the NANOGrav collaboration show early signs of consistency with gravitational waves with a period of decades.
Read article 'Weinberg on astrophysics'
Weinberg on astrophysics
Steven Weinberg has penned a concise account of the foundations of astrophysics of permanent value, writes our reviewer.
Read article 'Neutrinos confirm rare solar fusion process'
Neutrinos confirm rare solar fusion process
The Borexino collaboration has used an ingenious analysis to provide the first direct proof of the CNO cycle.
Read article 'Researchers grapple with XENON1T excess'
Researchers grapple with XENON1T excess
The excess could be due to a difficult-to-constrain tritium background, solar axions or solar neutrinos with a Majorana nature, says the collaboration.
Read article '100 TeV photons test Lorentz invariance'
100 TeV photons test Lorentz invariance
HAWC and other high-altitude observatories are pushing the energy of gamma-ray observations into new territory to test fundamental symmetries.
