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Australians are getting a big hello from the heavens as Venus, Jupiter and a waxing crescent moon combine to create a celestial smiley face.

Unfortunately, because North Americans are on the other side of the equator, they'll view the phenomenon upside down — as a mono-browed frown over a pair of eyes.

The best time to see the friendly phenomenon is about 20 to 30 minutes after sunset in both hemispheres. Viewers in Western Australia have the best view, with the moon appearing closer to the "eyes" formed by the planets.

While the planets and moon appear to be close together, in reality they're not. The moon is 250,000 miles away, while Venus is 93 million miles away and Jupiter 540 million miles away.