A galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, gas, dust, and dark matter. Galaxies range in size from dwarfs with just a few billion stars to giants with one hundred trillion stars, each orbiting its galaxy’s center of mass. They come in various forms, including spiral galaxies with flat, rotating disks and prominent arms; elliptical galaxies, which are more rounded and featureless; and irregular galaxies, which lack a distinct shape. The Milky Way, our own galaxy, is a spiral galaxy. Galaxies are not only fundamental to our understanding of the universe but also to the study of cosmology as they host the life cycles of stars and the ecological balance of interstellar matter.
A new research method developed by NAOC scientists improves the extraction of complex galaxy data, paving the way for future cosmic explorations and surveys. Scientists…
New images from the VLT Survey Telescope depict distant galaxies, including the lenticular ESO 510-G13 and Hickson Compact Group 90, highlighting interactions and the effects…
A global group of astronomers has identified 49 new gas-rich galaxies with the help of the MeerKAT radio telescope in South Africa. Dr Marcin Glowacki,…
A common belief among astronomers is that galaxy groups and clusters differ mainly in the number of galaxies they contain – there are fewer galaxies…
Should theories of cold dark matter hold true, the Webb Space Telescope should discover tiny, bright galaxies of early universe For the past year and…
A team of astronomers including those from the University of Tokyo created the first-ever map of magnetic field structures within a spiral arm of our…
A team of Chinese astronomers has successfully observed the full transformation of dwarf galaxies into ultra-compact dwarf galaxies (UCDs). This significant discovery was detailed in…
Why is the immense supergalactic plane predominantly filled with a single type of galaxy? This longstanding astronomical mystery may finally be solved. The Milky Way…
If you gaze at the vast galaxies filled with countless stars, it’s easy to assume they are star factories, churning out brilliant balls of gas….
The James Webb Space Telescope’s launch has enabled astronomers to observe the universe so closely that we are nearing the period when the earliest galaxies…
New images from the James Webb Space Telescope (JWST) have enabled Australian astronomers to uncover secrets of how infant galaxies started an explosion of star…
Recent research has demonstrated that the supermassive black hole at the center of a galaxy can significantly influence the chemical composition of the host galaxy….
The Universe is vast, encompassing hundreds of billions of galaxies. For those galaxies close to us, we primarily determine their distances using classical Cepheids and…
Maisie’s galaxy, named in honor of Steven Finkelstein’s daughter, was detected 390 million years after the Big Bang. The James Webb Space Telescope has enabled…
Precise mapping of temperature changes provides insights into its evolution. A multinational team of astronomers has developed a temperature map for the cosmic dust swirling…
A group of scientists from EPFL have discovered a method to utilize the phenomenon of strong gravitational lensing, achieving a precision approximately three times superior…
Utilizing the most powerful telescope to date, astronomers have identified a colossal and tightly clustered galaxy situated 25 billion light-years away. GS-9209, a galaxy that…
Physicists from SLAC National Accelerator Laboratory and Stanford University have found fresh evidence supporting the Lambda-CDM model of the universe, using data derived from the…