Why is Pluto no longer considered a planet anymore?
Illustration of Pluto Why is Pluto no longer considered a planet anymore? Pluto didn’t change, but our definition of a planet did. For most of the 20th century, Pluto was...
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Recent articles covering key topics in astronomy and space science.
How far does the solar system actually go, and what is out there?
How far does the solar system actually go, and what is out there? Most people imagine the edge of the solar system somewhere near Pluto, a distant world that orbits...
What Neptune really looks like is not what you see in images
What Neptune really looks like is not what you see in images Neptune is almost always shown as a bright, glowing blue planet. In images, it looks vivid and colorful,...
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