Gravity Exploration

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Across
  1. 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.
  2. 5. was an English mathematician, physicist, astronomer, alchemist, theologian, and author widely recognised for his discoveries in optics (white light composition) and mathematics (calculus), and discovering gravity
  3. 6. the planet on which we live; the world.
  4. 7. 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.
Down
  1. 1. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
  2. 2. the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
  3. 4. a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
  4. 5. the star around which the earth orbits.
  5. 8. the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.