The universe

3. a large body of matter in orbit around the sun or a star and thought to be developing into a planet.
4. an explosion of a giant star
6. a strong, hard magnetic silvery-grey metal, the chemical element of atomic number 26, much used as a material for construction and manufacturing, especially in the form of steel.
7. a celestial body moving in an elliptical orbit round a star.
10. the curved path of a celestial object or spacecraft round a star, planet, or moon, especially a periodic elliptical revolution.
13. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
14. a small rocky body orbiting the sun.
15. 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.

1. 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.
2. all existing matter and space considered as a whole
4. a luminous spheroid of plasma held together by self-gravity.
5. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
8. The name given at a planet
9. Explosion de matière ayant provoqué la formation de l'univers connu, selon une théorie compatible avec une création soudaine.
11. The Dust of the stars
12. the natural satellite of the earth