A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The powerful Euclid ...

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Modern science suggests that we and all our achievements and memories are destined to vanish like a dream. Is that sad or good? The hot star Wolf-Rayet 124, captured by the James Webb Space Telescope ...

When you bake a loaf of bread or a batch of muffins, you put the dough into a pan. As the dough bakes in the oven, it expands into the baking pan. Any chocolate chips or blueberries in the muffin ...

Humanity is lucky to reside on a planet circling a star with plentiful radiation, illuminating the world around us in reflected wavelengths of light. These wavelengths—a portion of which we experience ...