Astronomy Crossword

An ordinary star such as the sun at a stable point in its evolution
The collapsed core of a massive star
A condition found in the region around a magnet or an electric current, characterized by the existence of a detectable magnetic force at every point in the region and by the existence of magnetic poles.
Electromagnetic radiation of a very short wavelength and very high-energy
A gigantic ball of ice and rock that orbit the Sun in a highly eccentric orbit.
The gas and dust that exists in open space between the stars.
A phenomenon that occurs when the Moon passes into the shadow of the Earth.
The amount of light emitted by a star.
An astronomical unit of measure equal to the distance light travels in a year, approximately 5.8 trillion miles
The total or partial blocking of one celestial body by another.
Dense regions of molecular clouds where stars are forming.
The stage in a star's evolution where the core contracts and the star swells to about five hundreds times its original size
The theory that suggests that the universe was formed from a single point in space during a cataclysmic explosion about 13.7 billion years ago.
A celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite.
A very small, white star formed when an average sized star uses up its fuel supply and collapses.
A tube-like configuration of energy that is believed to have existed in the early universe.
A grouping of stars that make an imaginary picture in the sky
The amount of matter contained within a given volume.
The distance between consecutive crests of a wave.
Atomic nuclei (mostly protons) that are observed to strike the Earth's atmosphere with extremely high amounts of energy.
A layer of gases surrounding a planet, moon, or star.
Energy radiated from an object in the form of waves or particles.
A mutual physical force of nature that causes two bodies to attract each other
A cloud of dust and gas in space, usually illuminated by one or more stars.