In 19 newly discovered galaxies there is no trace of dark matter and no one knows why

Another cosmic haze. Dark matter, i.e. mysterious matter that does not emit and does not reflect electromagnetic radiation, known due to its gravitational effects, is considered a key element in the formation of galaxies. It attracts the gas atoms that form these galaxies over time. Whether a galaxy contains dark matter can be seen from … Read moreIn 19 newly discovered galaxies there is no trace of dark matter and no one knows why