Astronomy

This map unfolds the entire night sky from sunset (at right) until sunrise (at left).

Arrows and colored dots show motions and locations of solar system objects during the month.

The planets

in their orbits

Arrows show the inner planets’

monthly motions and dots depict

the outer planets’ positions at mid-

month from high above their orbits.

Jupiter’s moons

Io

Europa

S

WE

N

Ganymede

Callisto

ILLUSTRATIONS BY

ASTRONOMY

: ROEN KELLY

LYN

GEM

CNC

CMi

CMa

MON

PYX PUP

VEL

ANT

CRT

HYA

SEX

LEO

LMi

UMA

SCO

OPH

HER

CRV

COM

CVn

CB BOÖ

SER

VIR

LIB

LUP

Objects visible in the evening

Sun

Early evening

Jupiter

Mercury appears bright

during evening twilight

in early July

Amphitrite

Venus

Ceres

24 23 22 21 20 19 18 17 16 15 14 13

1 2 3 4 5 6 7 8 9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Callisto

Europa

Ganymede

Io

Jupiter

Mercury

Greatest eastern

elongation

is July 11/12

Earth

Aphelion is July 6

Ceres

Uranus

Saturn

Venus

Jupiter

Jupiter Mars

Opposition is

July 26/27

Pluto

Opposition

is July 12

Neptune

WWW.ASTRONOMY.COM 41

Dots display positions

of Galilean satellites at

11 P.M. EDT on the date

shown. South is at the

top to match

the view

through a

telescope.

To locate the Moon in the sky, draw a line from the phase shown for the day straight up to the curved blue line.

Note: Moons vary in size due to the distance from Earth and are shown at 0h Universal Time.

The planets

in their orbits

Arrows show the inner planets’

monthly motions and dots depict

the outer planets’ positions at mid-

month from high above their orbits.