a type of telescope that uses morrors to focus visible light
Gas giant planets
large, gaseous planets that are very cold at their surfaces, have ring systems, many moons and lack solid surfaces
a type of telescope that uses lenses to focus visible light
small, eccentrically orbiting body made of rock and ice that consists of a nucleus, a coma, and one or more tails that point away from the sun
occurs when the sun is directly overhead at the equator and results in day and night of equal length for both northern and southern hemisphere
strak of light produced when a metoeroid falls toward earth and burns up in earths atmosphere
occurs when the sun is directly overhead at the equator and results in day and night of equal lengh for both hemispheres
small asteroid that fell on early earth, generating heat.
metallic or silica rich object, bombarded earth generating heat energy
layer of loose, ground up rock on the lunar surface
occurs when the sun is directly overhead, and results in the minimum number of daylight hours for the northen hemisphere and the maximum number for the southern hemishere
occurs only during a full moon, when earth passes between the sun and the moon
occurs whe the moon passes between earth and the sun and the moon cdasts a shadow on earth, blocking earths view of the sun, can be partial or total
when the sun is directly overhead, and results in the maximum number of daylight hours for northern hemisphere and the minimum number of hours for the southern hemisphere
rocky surfaced, relatively small, dense inner planets closest to the sun.