A pulsar is the closest thing to a black hole astronomers can observe directly. Pulsars are capable of crushing half a million times more mass than Earth into a sphere no larger than a city. Some of these objects spin tens of thousands of revolutions per minute, faster than the blades of a kitchen blender.
- Paulo Freire, astrophysicist, Max Planck Institute for Radio Astronomy in Bonn, Germany
- Pablo Saz Parkinson, astrophysicist, University of California at Santa Cruz
- Bruce Allen, director, Max Planck Institute for Gravitational Physics in Hannover, Germany
- Victoria Kaspi, physics professor, McGill University in Montreal
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