Solar System

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Across
  1. 2. an intense burst of radiation coming from the release of magnetic energy associated with sunspots
  2. 3. a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
  3. 4. the star around which the earth orbits.
  4. 6. graph in which the absolute magnitudes (intrinsic brightness) of stars are plotted against their spectral types (temperatures)
Down
  1. 1. a spot or patch appearing from time to time on the sun's surface, appearing dark by contrast with its surroundings.
  2. 2. System the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. The planets of the solar system are (in order of distance from the sun) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
  3. 4. a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
  4. 5. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.