STARGAZERS are hoping for clear skies with this afternoon marking the last chance to catch a rare perfect planetary alignment of Venus and Jupiter.

It's just one of two conjunctions (close alignment of two objects in space) keen observers are able to see in Gympie skies.

Owen Bennedick of the Wappa Falls Astronomical Observatory says after last night, Jupiter will dip below the Western horizon.

"We've seen Venus rising and Jupiter setting, and they've actually crossed over now,” he says.

Those with an unobstructed view of the Western horizon may have caught the display, with planets normally being the brightest objects in the sky.

For those who may miss out, Owen says there's still the chance to see another alignment directly above our heads.

"We also have Saturn, Mars and the star Antares in the Scorpius constellation very close to one another,” he says.

"You may be able to see Saturn's moons with a powerful enough telescope.”

Astronomy fans will have almost six months to go before it disappears from our skies.