Stars, as physical systems, are self-gravitating, approximately hydrostatic spheres of plasma in which energy is generated predominantly by thermonuclear fusion in their cores and transported outward by radiation and/or convection. Their structure is governed by the equations of stellar structure, balancing gravity, gas and radiation pressure, and energy transport. Stellar properties such as mass, composition, and rotation determine their internal stratification, nucleosynthetic pathways, luminosity, temperature, and evolutionary tracks. Stars interact with their environments via radiation, stellar winds, and mass loss, and they serve as fundamental sites of element synthesis and key components of galactic and cosmological structure.
The hunt is on for terrestrial exoplanets in habitable zones, and some of the most promising candidates were discovered almost a decade ago about 40 light-years from Earth. The TRAPPIST-1 system contains seven terrestrial ...
Planetary Sciences
Dec 11, 2025
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Astronomers have captured images of two stellar explosions—known as novae—within days of their eruption and in unprecedented detail. The breakthrough provides direct evidence that these explosions are more complex than previously ...
Astronomy
Dec 5, 2025
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If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, billions of stars and their attendant planets. The universe teems with huge, spectacular objects, and ...
Astronomy
Dec 4, 2025
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How can star populations help astronomers re-evaluate the search for intelligent extraterrestrial life, also called technosignatures? This is what a study released on the preprint server arXiv, hopes to address as a team ...
Astronomy
Dec 1, 2025
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A new paper published in Nature Communications could put scientists on the path to understanding one of the wildest, hottest, and most densely packed places in the universe: a neutron star.
Quantum Physics
Nov 28, 2025
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Astronomers from the University of Hawaiʻi Institute for Astronomy (IfA) have uncovered the turbulent past of a distant red giant by listening to its celestial "song." Subtle variations in the star's brightness suggest that ...
Astronomy
Nov 26, 2025
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Scientists working with the James Webb Space Telescope discovered three unusual astronomical objects in early 2025, which may be examples of dark stars. The concept of dark stars has existed for some time and could alter ...
Astronomy
Nov 25, 2025
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A team of researchers has confirmed stars ring loud and clear in a "key" that will harmonize well with the science goals and capabilities of NASA's upcoming Nancy Grace Roman Space Telescope.
Astronomy
Nov 20, 2025
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Researchers have successfully performed the world's first Milky Way simulation that accurately represents more than 100 billion individual stars over the course of 10 thousand years. This feat was accomplished by combining ...
Astronomy
Nov 17, 2025
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Swift observations with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed the explosive death of a star just as the blast was breaking through the star's surface. For the first time, astronomers ...
Astronomy
Nov 12, 2025
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