Solar System

3. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
5. 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.
8. a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
9. occurs when the Moon passes between Earth and the Sun, thereby obscuring Earth's view of the Sun, totally or partially.
10. small, dense star
11. a regular, repeating path that one object in space takes around another one
14. the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of approximately equal length
15. Marked by particular weather pattern
17. Moon's illumination is increasing

1. Object that orbits a star, round in shape, has gravitational pull
2. takes place when the Earth comes between the Sun and the Full Moon and blocks the Sun's direct rays from lighting up the Moon
4. a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.
6. the universal force of attraction acting between all matter
7. small, rocky objects that orbit the Sun. Although asteroids orbit the Sun like planets, they are much smaller than planets
12. a very small cooled remnant of white dwarf that emits no detectable light.
13. Longest and shortest days of the year
15. Luminous ball of gas
16. Moon's illumination is decreasing