The Space Crossword

when the sun reaches its highest (summer) or lowest (winter) point at noon in the sky; in the northern hemisphere, one of the longest/shortest days in year.
occurs two times a year, when the day and night are equal since the sun passes the equator.
a measure to use to measure the distance of the position of planets relative to the sun.
a oval shape around the sun or the orbital path the planets take around the sun
the distance light travels in a year
where stars form, there are gas clouds and dust in space
the gases and dust that exist in the space between stars
in the first stage of a star’s formation; a contracting mass of gas
one of the two main types of stars that can form (smaller in mass than massive stars)
on the Hertzsprung-Russell diagram, a stage in a star’s life cycle which they produce energy by converting hydrogen into helium
a stage in a massive star’s life cycle when the star increases in size and becomes very bright
the stage in the life cycle of a Sun-like star during which the star increases in size and becomes very bright
one of the latter stages in the life cycle of a Sun-like star during which the star collapses
the final phase in the life cycle of a Sun-like star
an enormous explosion of a massive star which marks the death of a massive star
a small, super-dense remnant of a supernova
a super-dense remnant of a supernova in which light cannot even escape
a pattern in the night sky formed by a grouping of stars
a star grouping that is not one of the 88 recognized constellations
consists of millions or billions of stars, gas, and dust