Tonight over Buenos Aires, 9 of the bright, easy-to-spot constellations climb high into a dark sky. Here's what's up, how high, and which way to face.
DARK-SKY WINDOW TONIGHT · BUENOS AIRES
Dark by6:53 PM
Until7:58 AM
High up now9
Never rise here6
Altitudes computed for Buenos Aires (-34.6°, -58.4°) during tonight's dark hours.
High in the sky over Buenos Aires tonight
85° UPScorpiusthe Scorpion
Looknorthern sky
Anchor starAntares
How to know itA genuinely scorpion-shaped curve of stars led by red Antares, riding low across the southern summer sky.
75° UPCentaurusthe Centaur
Looksouthern sky
Anchor starAlpha Centauri
How to know itHolds Alpha Centauri, the closest star system to the Sun, and wraps around the Southern Cross.
74° UPSagittariusthe Archer / the Teapot
Lookeastern sky
Anchor starKaus Australis
How to know itIts bright stars form a "Teapot" — and it points straight at the dense, glowing centre of the Milky Way.
65° UPCruxthe Southern Cross
Looksouthern sky
Anchor starAcrux
How to know itThe smallest constellation, but the most famous in the south — its long axis points toward the south celestial pole.
49° UPCarinathe Keel
Looksouth-western sky
Anchor starCanopus
How to know itHome to Canopus, the second-brightest star in the sky, and the spectacular Carina Nebula — a far-southern jewel.
43° UPAquilathe Eagle
Looknorth-eastern sky
Anchor starAltair
How to know itBright Altair completes the Summer Triangle with Vega and Deneb, straddling the celestial equator.
40° UPLeothe Lion
Looknorthern sky
Anchor starRegulus
How to know itA backwards question-mark (the "Sickle") forms the Lion’s head, anchored by bright Regulus.
33° UPCanis Majorthe Great Dog
Lookwestern sky
Anchor starSirius
How to know itContains Sirius, the brightest star in the entire night sky, trailing just behind Orion.
25° UPBoötesthe Herdsman
Looknorthern sky
Anchor starArcturus
How to know itA kite-shaped figure led by Arcturus, the brightest star of the northern spring sky.
“Up” is the highest the centre of each pattern gets above the horizon tonight — your fist at arm's length spans about 10°. Directions are where to face when it's best placed.
Low on the horizon from Buenos Aires
These clear the horizon but stay low, so trees and buildings may hide them: Lyra (~17°, northern) · Cygnus (~6°, north-eastern) · Gemini (~4°, north-western) · Orion (~3°, western).
Out of reach from Buenos Aires
At Buenos Aires's latitude these never climb above the horizon, so you can't see them from here at any time of year: Ursa Major, Pegasus, Taurus, Andromeda, Cassiopeia, Perseus. To catch them, you'd need to travel toward the Northern Hemisphere.