HOW DO OBJECTS IN THE SKY APPEAR TO MOVE?

The apparent motion of objects in the sky depends on the motions of earth

STAR MOTIONS

• Stars appear to move east to west
• This motion is caused from earth turing west to east
• The sun motions during the day is also caused by earths movement

SEASONAL CHANGES

• Constellations and star patterns are the same year after year
• The ones you can see vary from season to season
• You can find Orion in the eastern sky in winter
• In spring Orion disappears after sunset
• Seasonal changes are caused by earths orbit around the sun

SEASONAL CHANGES PT.2

• Every night the position of the stars shifts to the west
• Stars once visible in the west disappear and others appear
• Stars closest to the north star you can see all year around
• As earth rotatates constellations never appear to rise or set

THANKS FOR WATCHING