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

By Tania Ahmed, Honorary Postdoctoral Associate, Macquarie University

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.…

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