Black Holes and Neutron Stars Crossword Puzzle

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Across
  1. 5. light: a range of the visible light spectrum, defined as having a wavelength between 400 and 525 nm.
  2. 7. Evolution: the large-scale, systematic, and irreversible changes of the structure and composition of a star over time.
  3. 8. Horizon: a theoretical boundary around a black hole beyond which no light or other radiation can escape
  4. 10. Energy is the potential energy a massive object has in relation to another massive object due to gravity.
  5. 12. Stars: a celestial object of a very small radius (typically 18 miles/30 km) and very high density, composed predominantly of closely packed neutrons.
  6. 14. burst: it is one class of X-ray binary stars exhibiting X-ray bursts, periodic and rapid increases in luminosity that peak in the X-ray region of the electromagnetic spectrum.
  7. 16. Ray Burst: an immensely energetic explosion that has been observed in distant galaxies
  8. 17. Mass: a phrase that is used by astronomers to describe the mass of a star
  9. 18. Space: it often refers to a spatial geometry that is not "flat", whereas a flat space is described by Euclidean geometry
  10. 19. sometimes called a collapsar — is a particularly energetic core-collapse supernova.
Down
  1. 1. Pulsar: a pulsar with a rotational period of less than about 10 milliseconds, millisecond pulsars have been detected in radio
  2. 2. Stars: a member of a binary or multiple star system that is known to exist only by its gravitational effect on the visible components whose apparent motions it usually alters in a cyclic manner.
  3. 3. a neutron star with an ultra-strong magnetic field
  4. 4. it is used to see charts and telescope settings
  5. 6. a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles.
  6. 9. Dwarf: it is what stars like the Sun become after they have exhausted their nuclear fuel
  7. 11. Momentum: the quantity of rotation of a body, which is the product of its moment of inertia and its angular velocity.
  8. 13. Speed: it is the minimum speed required to escape a planet's gravitational pull.
  9. 15. Hole: a region of space having a gravitational field so intense that no matter or radiation can escape.
  10. 17. a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.