annular eclipse a solar eclipse in which a ring, or annulus, of the Sun¹s photosphere remains visible
Apollo 11 the first manned spacecraft to land on the Moon
asteroid one of the thousands of tiny planets orbiting the Sun mostly located between the orbits of Mars and Jupiter.
asteroid belt a wide gap between the orbits of Mars and Jupiter where most asteroids can be found
astronomer a scientist who studies objects in space
Astronomy the science that deals with the universe beyond Earth¹s atmosphere
axis an imaginary line around which an object spins
Bailey’s Beads a chain of several bright “beads” of white light, visible just before and just after a total solar eclipse
celestial pertaining to the sky; heavenly.
chromosphere a layer in the Sun and many other starts just above the photosphere
comet an object made of dust and frozen gases that orbits the Sun
corona the faint, white light seen around the Sun during a solar eclipse
craters bowl-shaped holes found on the Moonís surface
crecent the figure of the Moon during its first and last quarter, resembling a segment of a ring with pointed ends
cycle a period of time in which events repeat themselves in the same order
Earth the third planet from the Sun
eclipse, lunar the passing of the Moon into the Earth¹s shadow
eclipse, solar the passing of the Moon¹s shadow across the Earth
planets the main bodies in space that revolve around the Sun
fireball a very bright meteor
galaxy a group of stars, gas and dust.
Galileo a famous Italian astronomer (1564-1642) who was the first person to use a telescope to look at the sky.
gas a state of matter
gibbous a phase of the Moon in which more than half of the side we see is illuminated.
half moon the first-quarter or third-quarter phase, when half the visible side of the Moon is illuminated.
helium a gas that’s lighter-than-air
hydrogen a gas
lunar having to do with the Moon
lunar eclipse occurs when the Earth passes between the Sun and the Moon
maria smooth places on the Moon¹s surface; seas
meteor a streak of light in the sky caused by a chunk of rock burning up in Earth’s air
meteorite a meteoroid that lands on a planet or a satellite
meteoroids chunks of iron, nickel, and other materials that move through space
meteor shower the appearance of many meteors during a short period of time as the Earth passes through a comet’s orbit
orbit the path of one object in space around another object
penumbra the larger shadow cast by the Moon during a solar eclipse
phase the shape the Moon appears to be as seen from Earth
photosphere the surface of the Sun
planets the main bodies in the solar system that revolve around the Sun
revolution the movement of one object around another
rotation the spinning of an object
satellite a smaller object that revolves around a larger object
shadow bands light and dark bands that appear to sweep across the ground before and after a total solar eclipse
shooting stars

solar eclipse occurs when the Moon passes between the Earth and the Sun
solar flares bright areas in the Sun’s atmosphere from which hot gases shoot out
solar prominences light from the cooler, darker areas of the Sun
solar system the nine planets, their moons, and the Sun
sunspots dark spots on the Sun
telescope an instrument that makes distant objects appear closer and larger
umbra the darker, smaller shadow cast by the Moon during a total solar eclipse