Planets of the solar system

12345678910111213141516171819202122232425262728293031323334353637383940414243
Across
  1. 2. It is what decides how much we weigh and how far a basketball will travel when thrown before it returns to the surface.
  2. 3. a large body of matter in orbit around the sun or a star and thought to be developing into a planet.
  3. 5. the angular distance of a point north or south of the celestial equator.
  4. 11. physically explore or examine (something) with the hands or an instrument.
  5. 12. a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.
  6. 15. a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
  7. 16. the fully shaded inner region of a shadow cast by an opaque object, especially the area on the earth or moon experiencing the total phase of an eclipse.
  8. 17. the star around which the earth orbits.
  9. 19. a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
  10. 21. the shadow cast by the earth or moon over an area experiencing a partial eclipse.
  11. 23. have a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size.
  12. 28. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
  13. 29. an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.
  14. 30. the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
  15. 31. a meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground.
  16. 32. a celestial body moving in an elliptical orbit around a star.
  17. 34. a way in which something is usually done, especially within a particular area or activity.
  18. 35. a tide just after the first or third quarters of the moon when there is least difference between high and low water.
  19. 37. unit a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun.
  20. 39. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
  21. 40. an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.
  22. 42. the angular distance of a place north or south of the earth's equator, or of a celestial object north or south of the celestial equator, usually expressed in degrees and minutes.
  23. 43. 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.
Down
  1. 1. a single orbit of one object around another or about an axis or center.
  2. 4. have a progressively larger part of its visible surface illuminated, increasing its apparent size.
  3. 6. a kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously.
  4. 7. the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun.
  5. 8. 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.
  6. 9. relating to or belonging to a planet or planets.
  7. 10. the action of rotating around an axis or center.
  8. 13. an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses, or of curved mirrors and lenses, by which rays of light are collected and focused and the resulting image magnified.
  9. 14. 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°.
  10. 17. 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.
  11. 18. measured from or considered in relation to the center of the sun.
  12. 20. planet a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
  13. 22. a tide just after a new or full moon, when there is the greatest difference between high and low water.
  14. 24. the point in the orbit of a planet, asteroid, or comet at which it is closest to the sun.
  15. 25. the action or process of moving or being moved.
  16. 26. a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.
  17. 27. having or representing the earth as the center, as in former astronomical systems.
  18. 29. the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of approximately equal length (about September 22 and March 20).
  19. 33. the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.
  20. 36. an eclipse in which the sun is obscured by the moon.
  21. 38. the act of rising to an important position or a higher level.
  22. 41. a small rocky body orbiting the sun