Earth and Space

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Across
  1. 5. a star in the northern circumpolar constellation of Ursa Minor
  2. 8. the envelope of gases surrounding the earth or another planet
  3. 9. radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy including solar water heating, and solar architecture
  4. 13. a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such
  5. 16. move or cause to move into a sloping position
  6. 17. a small rocky body orbiting the sun
  7. 19. the curved sickle shape of the waxing or waning moon
  8. 21. an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°
  9. 24. is the circular movement of an object around an axis
  10. 25. an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity
  11. 26. have a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size
Down
  1. 1. an eclipse in which the sun is obscured by the moon
  2. 2. the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes
  3. 3. the moon is one that is getting larger each night
  4. 4. all existing matter and space considered as a whole; the cosmos
  5. 6. its exact value is defined as 299,792,458 metres per second
  6. 7. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
  7. 10. the force that attracts a body toward the center of the earth, or toward any other physical body having mass
  8. 11. the movement of an object in a circular or elliptical course around another
  9. 12. a half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles
  10. 14. an imaginary line about which a body rotates
  11. 15. an eclipse in which the moon appears darkened as it passes into the earth's shadow
  12. 18. the curved path of a celestial object or spacecraft around a star, planet, or moon
  13. 20. each of the four divisions of the year (spring, summer, autumn, and winter) marked by particular weather patterns and daylight hours, resulting from the earth's changing position with regard to the sun
  14. 22. Lines of constant latitude, or parallels, run east–west as circles parallel to the equator
  15. 23. an astronomical object consisting of a luminous spheroid of plasma held together by its own gravity