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Solidifying white dwarfs. Credit: The Science website via DALEE

Challenging the Cosmos: White Dwarfs That Aren't Completely Dead

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According to the new paper, in some white dwarfs, the dense plasma in the interior doesn't simply freeze from the inside out. Instead, the solid crystals that form upon freezing are less dense than the liquid, and therefore want to float, then push the liquid inside
This image is from Gaia's third data release in 2022. The image above is from the new data release, and shows exactly how many new sources have been imaged at the center of the cluster. Only faint stars within Omega Centauri are marked in both images.

Gaia's Galactic Gold Mine: Star Clusters, Cosmic Lenses, Asteroids, and Unexpected Science

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The European Space Agency's Gaia mission discovered over half a million new stars, tagged 150,000 asteroids, and identified 380 cosmic lenses. These discoveries advance our understanding of the universe, setting the stage for the expected release of Gaia DR4 data in 2025
The partial concealment method. Illustration Aviad Panhi

For the first time the Gaia spacecraft detected two new planets

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