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Technical Trials for Easing the (Cosmological) Tension

A new study has sorted through models attempting to solve the cosmological tension, a discrepancy between two ways of calculating the universe's expansion. Three models that were previously viable solutions were excluded by the new data, while others reduced the tension but not solved it.

SourceSissa Medialab·JournalJournal of Cosmology and Astroparticle Physics·TypeData/statistical analysis·DateApr 19, 2024

Discovery of two potential Polar Ring galaxies suggests these stunning rare clusters might be more common than previously believed.

Researchers from Queen's University have identified two potential polar ring galaxies using data from the CSIRO's ASKAP radio telescope. The discovery suggests that these rare clusters might be more common than previously believed, with implications for our understanding of galaxy evolution and dark matter research.

SourceQueen's University·JournalMonthly Notices of the Royal Astronomical Society·TypeData/statistical analysis·DateSep 13, 2023

Closing in on the Elusive Neutrino

Researchers from the US and Germany report a realistic contender to measure the elusive neutrino mass using Cyclotron Radiation Emission Spectroscopy. The project tracks electrons generated by beta decay to reveal the neutrino mass, aiming for scalability beyond existing technology.

SourceDOE/Pacific Northwest National Laboratory·JournalPhysical Review Letters·TypeExperimental study·DateSep 6, 2023

Astrophysicists propose a new way of measuring cosmic expansion: lensed gravitational waves

Researchers propose using lensed gravitational waves from binary black holes to measure cosmic expansion. The method uses the delays between repeat appearances of these signals to encode the universe's expansion rate. This approach does not rely on knowing the exact locations or distances of binary black holes, making it a promising to...

SourceUniversity of California - Santa Barbara·JournalPhysical Review Letters·DateJun 30, 2023

Cosmic ray counts hidden in spacecraft data highlight influence of solar cycle at Mars and Venus

A study published in the Astrophysical Journal reveals a strong correlation between cosmic ray counts and the solar cycle at Mars and Venus. The research found that cosmic rays are suppressed during peak solar activity, highlighting the importance of understanding these interactions for future robotic missions and human exploration.

SourceEuroplanet·JournalThe Astrophysical Journal·TypeExperimental study·DateDec 5, 2022