Dec. 18, 2024 — Galaxy clusters -- the big cities of the universe -- are home to many giant elliptical galaxies that have completed their growth and are not forming stars. However, it is still ...

The James Webb Space Telescope’s first image reveals thousands of galaxies in a single shot ... A vibrant planetary nebula with a “butterfly” shape, created by dying stars shedding their outer layers.

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When a mid-sized star like the Sun runs out of fuel, it expands and its outer layers puff off, and then the core of the star ...

A study of more than 26,000 white dwarf stars has confirmed a long-predicted but elusive effect in these ultra-dense, dying stars: Hotter white dwarfs are slightly puffier than cooler ones, even when ...

which I find helpful at better defining the swirling gases in my favorite nebulas and galaxies.

My collaborators and I have just tackled one of astrophysics' enduring mysteries: how massive elliptical galaxies can form. Now, for the first time, we have solid observational evidence that provides ...

Stay tuned for more photos like this.” The image in question displays two cloudy galaxies above the orange glow of Earth’s atmosphere on a brilliant stellar backdrop. Those celestial bodies at ...

From its orbit in space unhindered by Earth's atmosphere, the most powerful telescope ever built has already shown us more distant and therefore older galaxies, but not one like our own in the ...

Other galaxies Webb has detected at this time period are significantly more massive. Nicknamed the Firefly Sparkle, this galaxy is gleaming with star clusters — 10 in all — each of which researchers ...