Stellar Evolution Crossword Puzzle #2 - Massive Stars

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Across
  1. 3. Ripples in spacetime caused by accelerating massive objects like merging neutron stars.
  2. 4. High-energy radiation often emitted by neutron stars and black hole accretion disks.
  3. 5. The leftover structure after a supernova explosion, which can be a neutron star or black hole.
  4. 6. A massive explosion that occurs when a high-mass star reaches the end of its life cycle.
  5. 9. A key element fused in the late stages of a high-mass star’s life before iron forms.
  6. 12. A neutron star with an extremely strong magnetic field, capable of releasing powerful bursts of energy.
  7. 16. The force that prevents a star from collapsing under gravity, arising from quantum mechanics.
  8. 17. The heaviest element that can be fused in a star’s core before it collapses.
  9. 18. The event that triggers a supernova when a massive star’s core runs out of fusion fuel.
  10. 19. The process by which lighter elements combine to form heavier ones, releasing energy in stars.
Down
  1. 1. Extremely energetic electromagnetic waves released during neutron star mergers or supernovae.
  2. 2. The process by which new atomic nuclei are formed in stars and during supernovae.
  3. 6. The powerful energy burst that propagates outward during a supernova explosion.
  4. 7. The incredibly dense remnant left behind after a massive star collapses in a supernova.
  5. 8. The observatory that first detected gravitational waves from neutron star mergers.
  6. 10. A rapidly spinning neutron star that emits beams of electromagnetic radiation.
  7. 11. The quantum mechanical effect that prevents electrons or neutrons from being squeezed indefinitely.
  8. 13. A swirling structure of gas and dust surrounding a black hole or neutron star.
  9. 14. A heavy element formed in neutron star mergers, explaining its cosmic origins.
  10. 15. Scientists at this university helped confirm that neutron star mergers produce heavy elements like gold.