The Night SkyWhat are constellations?Why do we see some in winter, some in summer and some all year long?Why do they move?How are they useful?Our Place in Spacearth does not occupy any special place in the !niverseThe !niverse"#t is all of space and everything in it$ including time%1.3 The Obvious ViewThe most simplest observation in Astronomy: Look at the night skyAbout 3 stars visible at any one time! "istribute" ran"omly but human brain ten"s to #n" patterns$These patterns are %onstellations1.3 The Obvious View&roup stars into %onstellations: #gures having meaning to those "oing the grouping'se(ul: )olaris* whi%h is almost "ue north+ot so use(ul: Astrology* whi%h makes pre"i%tions about in"ivi"uals base" on the star patterns at their birthWhy do we see some constellations in winter, some in summer and some all year long?We need to understand how the arth moves around our Sun%We see constellations in & dimensions from earth%Stars are actually placed in '(1.3 The Obvious View,tars that appear %lose in the sky may not a%tually be %lose in spa%e:Why do the Stars )ove?Polaris * the North Star+ircumpolar +onstellations?Why do the Stars )ove?The Stars don,t actually move$#t is the arth that is moving -spinning.%The spinning arth gives the perception that the stars move%Polaris * arth,s northern a/is points at this star so its movement is not a0ected 1y arth,s 2otation%How are +onstellations !seful?3inding N, S,4 West-3ind 5ig (ipper$ then follow end stars over to Polaris -the North Star.Track your position on arth -navigation.What a1out the 6 wanderers?MADE BY: SHUBHAM NAGPALROLL NO. 27CLASS VIII