A bowl shaped hole that is formed when asteroids and comets collide with the surface
dark, flat areas on the moon's surface formed from huge ancient lava flows
A natural body, like the moon, or an artificial object that orbits another object.
A robot vehicle used to explore deep space.
the layer of the Sun closest to the core in which energy is transerfered to the outer layer.
Sun's outer layer in which energy is transferred by convection
the visable, outer layer of the sun
the gaseous middle layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun
The outer edge of the Sun's atmosphere.
A place on the Sun's surface disrupted by a magnetic field that is cooler than its surrounding
a stream of gas that erupts from the surface of the sun
A brief burst of energy from teh sun's photosphere
The blanket of material surrounding the crater that is thrown out during the impact. Usually these are piles of rocks around the circular hole. Often the material is lighter in color than the surface material. It becomes thinner as you move away from the crater.
The passing of one object through the shadow of another