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NASA’s Astronomy Picture of the Day

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A desert stairway appears to rise into the Milky Way, surrounded by zodiacal light and colorful airglow. This scene brings together starlight from our galaxy, sunlight scattered by Solar System dust, and light emitted by Earth's atmosphere.

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Earth's crescent Moon shares this view with Jupiter and its four large Galilean moons. Their apparent alignment and the Moon's faint earthshine reveal how distance, perspective, and reflected sunlight shape the scene.

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A deep hole in Antarctic ice is part of IceCube’s unusual way of studying the universe. Buried sensors detect faint light from particles produced in rare neutrino interactions, giving astronomers another cosmic messenger.

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The Moon’s farside is a heavily cratered landscape with far fewer dark lava plains than the side we see from Earth. This spacecraft mosaic reveals a contrasting surface history, while tidal locking explains why we normally see only the other face.

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Stickney Crater dominates this close-up of Phobos, one of Mars’s small moons. Its enormous impact scar and streaked walls reveal how collisions and even very weak gravity reshape a tiny world.

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