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Across
  1. 3. is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline
  2. 5. is a celestial body that (a) is in orbit around the Sun
Down
  1. 1. is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun.
  2. 2. THE CENTRAL STAR OF THE SOLAR SYSTEM
  3. 3. SMALL BODY A BODY TROUBLED IN A PLANETARY
  4. 4. - a spherical celestial body, constituting a cluster of gravitationally bound matter.