Astrophysics
Subfield of astronomy
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We include updates on Dark matter, Doppler effect, Cosmic microwave background, Dark energy, Black-body radiation, White hole, Event horizon, Redshift, Axion, Abundance of the chemical elements, Black body, Red giant, Compton scattering, Hydrostatic equilibrium, Graphical timeline from Big Bang to Heat Death, Strangelet ... and more.
| March 2025 |
Dark energy
The Dark Energy Spectroscopic Instrument (DESI) collaboration announced evidence for evolving dark energy by analyzing baryon acoustic oscillations (BAO) data combined with CMB, weak lensing, and supernovae datasets. The results suggest a slow decrease in dark energy density over time, with statistical significance ranging from 2.8 to 4.2σ.
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| 2024 | Bartol Research Institute celebrates its centennial. |
| 2024 |
Modified Newtonian dynamics
A study claimed that the universe's earliest galaxies formed and grew too rapidly to be explained by the Lambda-CDM model, but such rapid growth was predicted by MOND theory.
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| 2023 |
Dark galaxy
Nube, a potential dark galaxy, was discovered through deep optical imagery analysis in the Stripe 82 region. This discovery is significant as Nube is classified as an 'almost dark galaxy' due to its extremely low surface brightness.
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| 2023 |
Modified Newtonian dynamics
A study measured the acceleration of 26,615 wide binaries within 200 parsecs, demonstrating systematic deviations from Newtonian dynamics and conformity with MOND (AQUAL) predictions. The results remain disputed among researchers.
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| 2023 |
Modified Newtonian dynamics
A research study concluded that cold dark matter cannot adequately explain galactic rotation curves, while MOND provides a more comprehensive explanation.
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| June 2023 |
Multi-messenger astronomy
Astronomers led by Naoko Kurahashi Neilson used a new cascade neutrino technique to detect neutrinos from the Milky Way's galactic plane, creating the first neutrino-based galactic map.
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| February 2023 |
Dark energy
Researchers from the University of Hawaiʻi at Mānoa formulated a new theory proposing that black holes gain mass as the universe expands, potentially explaining dark energy through a concept called 'cosmological coupling'.
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| 2022 |
Modified Newtonian dynamics
Kroupa et al. published a study of open star clusters, arguing that asymmetry in tidal tails and cluster lifetimes are inconsistent with Newtonian dynamics but consistent with MOND theory.
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| 2022 |
Modified Newtonian dynamics
A survey of dwarf galaxies from the Fornax Deep Survey (FDS) catalogue was published, with astronomers and physicists concluding that observed deformations of dwarf galaxies in the Fornax Cluster and the lack of low surface brightness dwarfs towards its centre are incompatible with ΛCDM expectations but consistent with MOND theory.
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| August 2022 | Concluded his position as an Astrophysics lecturer and Reader at Lancaster University. |
| 2021 |
Przybylski's Star
Comprehensive experimental analysis of einsteinium isotope signature spectra was conducted, though no confirmation of presence in the star was published.
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| 2021 |
Dark energy
A group of researchers argued that observations of the Hubble tension may imply that only quintessence models with a nonzero coupling constant are viable.
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| 2021 |
Q-PACE
After launch, contact with the satellite could not be established, and the mission was feared to be lost.
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| 2021 |
Modified Newtonian dynamics
Unnamed researchers proposed a new relativistic model of MOND that is compatible with cosmic microwave background observations.
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| November 2021 |
European Solar Telescope
The American Daniel K. Inouye Solar Telescope, which is considered the counterpart to the European Solar Telescope, finished its construction.
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| January 17 2021 |
Q-PACE
Q-PACE satellite was launched into orbit to conduct scientific research on particle aggregation and the meter size barrier in planetary formation.
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| 2020 | A measurement of a unique MOND (Modified Newtonian Dynamics) effect was recorded, offering another alternative explanation to dark matter. |
| 2020 | Nicolò D'Amico completed his presidential term at the National Institute for Astrophysics. |
| 2020 |
Modified Newtonian dynamics
A group of astronomers analyzed data from the Spitzer Photometry and Accurate Rotation Curves (SPARC) sample and galaxy catalogs, finding statistically significant evidence of violations of the strong equivalence principle in weak gravitational fields near rotationally supported galaxies. Their findings were consistent with Modified Newtonian Dynamics (MOND) and inconsistent with the Lambda-CDM cosmological model.
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| May 16 2020 |
Talk:September
User Xboxsponge15 suggested removing bullet points near flower images on the Wikipedia page for September, noting they look strange when placed next to images.
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| 2019 | Observations of Andromeda showed a lack of microlensing effects, suggesting tiny black holes do not exist in significant numbers. |
| 2019 |
Space weather
The 116th Congress began considering the passage of the Space Weather Coordination Act (S141, 115th Congress).
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| 2019 |
Space weather
International Civil Aviation Organization (ICAO) implemented a Space Weather Advisory program, designating four global space weather service providers.
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| November 2019 |
Multi-messenger astronomy
Second high energy neutrino detected by IceCube, associated with tidal disruption event AT2019fdr.
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| October 1 2019 |
Multi-messenger astronomy
High energy neutrino detected at IceCube, with follow-up measurements identifying tidal disruption event AT2019dsg as a possible source.
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| 2018 |
Dark energy
Oztas et al. developed a model examining the potential evolution of dark energy parameters.
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| 2018 |
Asteroseismology
NASA launched TESS, a planet-finder mission that will survey bright stars across most of the sky.
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| 2018 |
Reionization
Planck mission results yielded an instantaneous reionization redshift of z = 7.68 ± 0.79, providing a more precise measurement of the cosmic reionization period.
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| 2017 |
Space weather
HR3086 Bill was developed, incorporating material from parallel agency studies as part of the OSTP-sponsored Space Weather Action Program (SWAP).
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| September 22 2017 |
Multi-messenger astronomy
Extremely-high-energy neutrino event IceCube-170922A recorded by the IceCube Collaboration, with associated gamma ray detections from blazar TXS 0506+056, representing the first time a neutrino detector was used to locate an object in space.
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| August 2017 |
Multi-messenger astronomy
Neutron star collision in galaxy NGC 4993 produced gravitational wave signal GW170817, marking the first gravitational wave event observed with an electromagnetic counterpart. The event was detected by multiple observatories including LIGO/Virgo, Fermi Gamma-ray Space Telescope, INTEGRAL, Las Campanas Observatory, Hubble Space Telescope, and others.
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| 2016 | A test of gravitational lensing in entropic gravity provided a scattered success for alternative hypotheses to dark matter. |
| 2016 |
Space weather
The Space Weather Research and Forecasting Act (S. 2817) was introduced to build upon the previous economic innovation zone concepts.
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| January 2016 | Began his role as an Astrophysics lecturer and Reader at Lancaster University. |
| 2015 | Gravitational wave measurements detected the merger of intermediate-mass black holes, which increased interest in primordial black holes as a potential dark matter explanation. |
| 2015 |
Q-PACE
Q-PACE mission was selected as part of NASA's ELaNa (Educational Launch of Nanosatellites) program to study particle dynamical aggregation and proto-planetary accretion.
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| 2015 |
Space weather
The concept of a Space Weather Economic Innovation Zone was first suggested by ACSWA, proposing to incentivize commercial space weather development and encourage expanded economic activity in managing space weather risks.
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| 2015 |
Space weather
U.S. Congress bill HR1561 was introduced, providing groundwork for exploring social and environmental impacts of a Space Weather Economic Innovation Zone.
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| 2015 | Nicolò D'Amico became president of the National Institute for Astrophysics, serving in this role until 2020. |
| 2015 |
Modified Newtonian dynamics
Launch of the LISA Pathfinder mission, which was proposed as a potential experimental platform for testing Modified Newtonian Dynamics (MOND) theories, particularly to detect anomalous tidal stresses and potential gravitational corrections in the Solar System.
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| June 2015 |
Redshift
Astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy, potentially identifying early universe stars that began production of chemical elements heavier than hydrogen, crucial for later planet and life formation.
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| February 25 2013 |
Asteroseismology
First two BRITE nanosatellites launched to study the brightest oscillating stars.
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| 2012 |
Space weather
A revised implementation plan for the US National Space Weather Program was scheduled to be released.
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| 2011 |
Asteroseismology
WIRE satellite re-entered Earth's atmosphere after more than a decade of service.
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| 2011 |
Space weather
A revised action plan for the US National Space Weather Program was scheduled to be released.
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This contents of the box above is based on material from the Wikipedia articles Doppler parameter, David Sobral, Space weather, Bartol Research Institute, Circular polarization, Nuker Team, Modified Newtonian dynamics, Dark energy, Q-PACE, Dark galaxy, Dark matter, Redshift, Talk:September, Przybylski's Star, National Institute for Astrophysics, Reionization, Multi-messenger astronomy, Doppler radio direction finding, Asteroseismology & European Solar Telescope, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.