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Ch's 9 & 10

Ch 9: Our Solar System and Others
Ch 10: Our Star - The Sun

Across
One of the small bodies into which the primeval solar nebula condensed and from which the planets formed.
Periodic changes in the Doppler shift of a star are measured with high-quality spectrographs, revealing the subtle "reflex motion" caused by the orbiting exoplanet.
The outer region of a sunspot and not as dark as the central part.
A feature of the solar surface seen in Hα as a dark wavy line.
A region of the solar surface that is dark and relatively cool; it has an extremely high magnetic field.
The passage of a celestial body in front of another one that subtends a larger angle.
The branch of astronomy that involves the detailed measurement of the positions and motions of stars and other celestial bodies.
The early stage of the Solar System in nebular theories.
The loose collections of particles from which the planets formed.
The acronym for an energetic puff of gas ejected from the Sun generally spread out over a larger area than a solar flare and coming from the corona rather than from the photosphere.
The region around a star in which conditions are suitable for life as we know it.
The region of a star from which most of its light is radiated. The disk or apparent surface of a star.
A planet orbiting a star other than the Sun.
Down
The dark central region of a sunspot
The 11 year cycle of variation of the number of sunspots visible on the Sun.
Exoplanets in the habitable zone around a star, in which water can exist in the liquid state, being neither too hot nor too cold.
An explosive release of energy of the Sun.
A method for detecting exoplanets whose orbital plane is nearly along our line of sight. There is a slight drop in a star's light as an exoplanet transits across the face of its parent star.
The part of the Sun's atmosphere between the photosphere and the corona.
The outermost region of the Sun, characterized by temperatures of millions of Kelvins.
A self-gravitating, self-luminous object, insufficiently massive for sustained nuclear fusion.
Solar gas protruding over the limb, visible to the naked eye only at eclipses but also observed outside the eclipses by its emission-line spectrum.