New research using NASA’s James Webb Space Telescope examines the maximum sizes of gas giant exoplanets, measuring chemical compositions and formation processes in the HR 8799 system.

Gas giants are massive worlds made mostly of hydrogen and helium. They lack solid surfaces, and in our solar system, Jupiter and Saturn are the best-known examples.

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NASA's James Webb Space Telescope (JWST) provides new insights into the formation of massive gas giant exoplanets, challenging previous size limits.

Gas giants are enormous planets made primarily of hydrogen and helium. They may contain dense central cores, but unlike Earth, they do not have solid ...

Earth’s habitability may trace back to a precise chemical balance during its formation, one that kept life-critical elements from disappearing into the core or drifting into space.

Astronomers have confirmed a bright galaxy called MoM-z14 that already existed just 280 million years after the Big Bang.

In the highest-pressure situation, Connor Hellebuyck was absolutely phenomenal.  Alexander Nemenov / Twelve years and three cycles later, NHL players returned to the Olympics, and the tournament ...

If a gas giant planet is big enough to ignite deuterium fusion, it becomes a brown dwarf instead of a planet. But this definition is incomplete and does not tell us how gas giants form or what ...

Far beyond our solar system, in the distant Pegasus constellation, lies a star system that is reshaping our understanding of ...

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

Study led by University of Bonn finds galaxy clusters contain about twice as much normal matter as previously estimated, based on recalculated stellar populations and survey data.