Audax'25 Workshop

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Across
  1. 3. Hypothetical outer shell of icy bodies surrounding the solar system, source of long‑period comets
  2. 7. Stretching of light to longer wavelengths, revealing expansion of the universe
  3. 8. Region beyond Neptune populated with icy bodies and dwarf planets
  4. 10. Invisible mass inferred from gravitational effects in galaxies and clusters
  5. 11. Process in stars that forms heavier elements from lighter ones
  6. 13. Type of variable star used as a standard candle for measuring cosmic distances
  7. 15. Sudden burst of radiation and energetic particles from the Sun’s surface
  8. 16. Limit beyond which a white dwarf collapses into a neutron star or black hole
  9. 20. Apparent shift in a star’s position seen from different viewpoints, used to measure distance
  10. 21. Glow in the sky caused by charged solar particles spiraling along Earth’s magnetic field
  11. 22. Nearly massless particle that hardly interacts with matter
  12. 23. Small solid object in a protoplanetary disk that coalesces into planets
Down
  1. 1. A neutron star with a magnetic field trillions of times stronger than Earth’s
  2. 2. Minimum distance a satellite can orbit before tidal forces tear it apart
  3. 4. Type of galaxy with a smooth, featureless, ellipsoidal shape
  4. 5. Explosive death of a massive star, often outshining a galaxy momentarily
  5. 6. When one side of a body constantly faces its partner due to gravitational locking
  6. 9. Technique of analyzing a star’s light to determine its composition and properties
  7. 12. Rapidly rotating neutron star emitting beams of radiation
  8. 14. Boundary around a black hole beyond which nothing can escape
  9. 17. Planet orbiting a star outside our solar system
  10. 18. Extremely luminous active galactic nucleus powered by a supermassive black hole
  11. 19. Hypothetical point of infinite density at the core of a black hole