October Sky Crossword

what is the appearance or time when a comet is visible such as Halley’s Come
The gravitational field is intense that no electromagnetic radiation can escape.
what is a celestial body moving about the sun
The central region of a planet, star, and galaxy.
The world or universe seen as an orderly, harmonious system.
Minute particles floating in space.
A Smaller star
Small galaxy that contain a few million stars
great circle formed by the intersection of the plane of the earth’s orbit
an enormous gravitationally bound assemblage of millions or billions of stars.
the attractive force that all objects exert on one another; the greater an object’s mass
Outer region of a galaxy, contains globular clusters, a few stray stars, and dark matter.
about 90 percent of the atoms in the universe are
Rock formed by the solidification of magma.
A planet that orbits the sun inside earth’s orbit
Space between the galaxies.
Space between the stars of a galaxy.
a narrow stream of gas or particles ejected from an accretion disk surrounding a star or black hole.
Curved piece of glass that brings light to a focus.
Edge of a celestial object.
a phenomenon caused by the Earth passing between the sun and moon.
used for recording variations in the earth’s magnetic field.
Dark and smooth area on the surface of the moon or on a planet.