radiation

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Across
  1. 4. cast back from a surface
  2. 6. having very little light or no light at all
  3. 7. the process in which energy is emitted as particles or waves.
  4. 8. self-luminous heavenly body; star.
  5. 9. the part of the invisible spectrum that is contiguous to the red end of the visible spectrum
  6. 10. state of a body perceived as having or generating a relatively high degree of warmth.
Down
  1. 1. disturbance on the surface of a liquid body.
  2. 2. of or relating to electromagnetism or electromagnetic fields.
  3. 3. something that makes things visible or affords illumination.
  4. 5. to suck up or drink in (a liquid); soak up: