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Even the best telescopes have blind spots. This fix can help us build better maps of the universe

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Astronomers have catalogued billions of stars and hundreds of billions of galaxies. We have found thousands of planets orbiting stars. We can also map where these galaxies sit and trace how the universe changes over time.

The universe also contains objects that are too faint, too far away, or too crowded to study easily. Simply taking a picture of a galaxy tells us only parts of its story.

When we look at breathtaking pictures of the universe, we rarely see the hidden limits of the machine that built them. Even the best telescopes have mechanical blind spots that can quietly miss key galaxies. If we ignore these missed targets, they can affect our understanding of how galaxies and other cosmic objects evolve over time.

Our new paper, published in the Astronomical Journal, presents a computer tool to show how clever instrument design can solve these hardware limitations. It models how tiny telescope robots work so we can catch missed targets to map the universe accurately.

Thousands of tiny robots

Modern astronomy is not just about........

© The Conversation