Space :) Crossword

A celestial body that emits light and heat
the measure of a star’s brightness as seen from Earth
Without this, there would be no life on Earth
brightness of the stars
the outer layer of the atmosphere of the sun
a region of space having a gravitational field so intense that no matter or radiation can escape
a series of star types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars).
a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events.
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.
a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
a natural satellite of any planet.
all existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
the magnitude (brightness) of a celestial object as it would be seen at a standard distance of 10 parsecs.
the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.