Facing North S e ubl Do ster Clu W n g N SEU Fa C AS n SI O E Fa ci ci g N Map instructions can be found on page 9. PER *Daylight-saving time J U LY | 2021 SK YC H A RT 5h WHEN TO USE THIS MAP Early June - 1 am* Late June - Midnight* Early July - 11 pm* Late July - Nightfall PE IA N α A M 31 D α δ D Bi ip g p γ M3 O β R β N U Moon July 20 M2 M2 0 β δ σ B LI R A α E L I P S VU π M4 n g Antares α ν C SW S 7 R O P H I U C H U S O A IC R P α M10 n oo 6 M ly 1 u J I C T Sp IL A ci GIT G δ U 5 M O R A T E Q U M12 M1 M2 2 Fa SA IR V ) O Arcturus α α BOÖTES S Q E A C ( α S T TA M6 RIU Sε M7 λ Fa ε PIUS υ S C O R μ ci S PU LU n STAR MAGNITUDES -1 0 1 2 3 4 Facing South SYMBOLS 7/9: Voyager 2 fl ies by Jupiter, 1979 Galaxy Double star 7/16: First fragments of Comet ShoemakerLevy 9 (D/1993 F2) crash into Jupiter, 1994 Variable star 7/20: Viking 1 lands on Mars, 1976 Open cluster 7/20: Apollo 11 makes fi rst crewed lunar landing, 1969 Diffuse nebula Globular cluster 7/26: Thomas Harriot draws a telescopic map of the Moon, becoming the fi rst to do so, 1609 Planetary nebula 7/29: U.S. Congress passes the National Aeronautics and Space Act, formally creating NASA, 1958 SK Y WATCH 2021 37 Facing West γ P N U UM M8 SE M Jul oon y1 3 M5 η CO BO RON A RE ALI S U μ DRACO β E C Little Dipper LYRA o A C (C RP A E N U S D M1 A 1 ) 3 σ O LE S NE CI C A AT I N VE E β ζ M & iza Al r co ε r 1 H URSA MINOR er ε Vega α M57 Albire α R E M2 5 M Jul oon y2 3 g β R NUS ir ta Al US α P ica P δ CYG HIN β ULA χ PEC VUL A Nort TT her GI Cros n SA s M27 LP n COMA BERENICES β E Polaris Deneb α M39 DE tur α C α α LA C ER TA M15 Sa V G irgo Cl alax us y te r 2 M8 A β S UT 1 D ε US ARI AQU α SC M8 E PE GA SU S M13 HERCULES S U M R A S J A O R R O M Great S quare of Peg asus Facing East M92 Zenith