Milky Way photography can yield some stunning shots from here on Earth. But what if you had a vantage point at some 400km ...
Previous efforts to map the galaxy's dust were challenged by limited data, but the Gaia mission has provided a treasure trove ...
Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...
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A giant extraterrestrial 'wave' hit Earth 14 million years ago — and may have dramatically altered our planet's climateOur solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may ...
This stunning photo was taken on January 29, 2025, from 265 miles (425 km) above the Pacific Ocean. Pettit, a seasoned ...
When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...
Millions of years ago, our Solar System traveled through a densely populated galactic region and was exposed to increased interstellar dust.
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...
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