The distribution of dark matter around a pair of colliding galaxy clusters appears unaffected by a putative dark-sector version of electromagnetism. Read More »
Elena Pinetti searches for dark matter using JWST calibration images that other researchers discard. Read More »
Observations by the JWST observatory of a star-free super-Jupiter reveal large-scale inhomogeneities in its atmosphere. Read More »
Measurements of millions of galaxies suggest that dark energy changes over time and is more complicated than previously thought. Read More »
The Euclid satellite released its first trove of galaxy data based on seven days of deep-field observations in three sky areas. Read More »
JWST observations reveal two distinct types of flares from the Milky Way’s black hole, suggesting that they originate from two different electron-acceleration mechanisms within the supermassive black hole’s accretion disk. Read More »
Temporal measurements in conditions similar to those in the Sun rebut a leading hypothesis for why models and experiments disagree on how much light iron absorbs. Read More »
In the Phoenix galaxy cluster, the presence of a black hole allows gas to cool, collapse, and form stars at an extremely high rate, in contrast with other clusters where the black hole heats the gas and slows star formation. Read More »
Measurements made by the JWST observatory could be used to detect photons emitted by the decay of a hypothetical form of dark matter particle known as the axion. Read More »
A new underwater neutrino experiment—for now, only partially installed—has detected what appears to be the highest-energy cosmic neutrino observed to date. Read More »
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