2019-04-01_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.

Jupiter’s moons

Io

Europa

S

WE

N

Ganymede

Callisto

ILL

UST

RAT

ION

S^ B

Y^ A

STR

ON

OM

Y:^ R

OE

N^ K

ELL

Y

PSC

CET

SCL

FOR

CAE

ERI

CAS

AND

TRI

ARI

PER

AUR

TAU

ORI

COL

LEP

LY N

GEM

CNC

CMi

CMA

MON

ANT PYX PUP

HYA

SEX

LEO

LMi

Objects visible in the evening

Early evening

Sun

Uranus

Mars

Herculina

Juno

Path of

the (^) Mo
on
16 15 14 13 12 11 10 9 8 7 6 5
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
Europa
Callisto
Io
Ganymede
Jupiter
Ceres
Uranus
Solar conjunction
is April 22
Mars
Earth
Saturn
Pluto
Neptune
Venus
Jupiter
Jupiter
Mercury
Greatest western elongation
is April 11
WWW.ASTRONOMY.COM 41
Dots display positions
of Galilean satellites at
4 A.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.