Shooting stars will be abundant in the skies over Wales on Tuesday night, as the Earth passes through the dust left over from Halley's Comet.
The Eta Aquariid meteor shower is expected to peak on Tuesday night, with up to 40 meteors per hour.
Those who head outside anytime between nightfall and the early morning of May 6 will have a chance to spot them.
This celestial display is associated with the Halley's Comet, officially designated 1P/Halley, which orbits the sun once every 76 years.
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Tania de Sales Marques, an astronomer at the Royal Observatory Greenwich, told the PA news agency: "The last time it [Halley's Comet] was seen in the sky was 1986, and our next chance to view it will be late in the year 2061."
The Eta Aquariids takes its name from the constellation of Aquarius in the southern hemisphere, where the shooting stars appear to originate from.
Meteoroids from Halley's Comet strike the Earth's atmosphere at an approximate speed of 150,000 miles per hour (240,000kph), burning up in the process.
While the Eta Aquariids shower is active from late April to near the end of May, the best time to see it will be on the night of May 5-6 between midnight and sunrise, when the shower will be at its peak.
Ms de Sales Marques said: "This is a moderately active meteor shower, with a peak rate of 40 meteors per hour, and even though its radiant will be below or only just above the horizon for those of us at London's latitude, we can still look out for its meteors all across the sky."
To have the best chance at spotting the shooting stars, skygazers should avoid areas with artificial light.
Ms de Sales Marques said: "As with any other stargazing activity, the best way to see meteors is to find yourself a spot sheltered from city lights with an unobstructed view of the sky and look in the direction of the radiant.
But Mother Nature won't be particularly cooperative on this occasion.
"The moon will be waxing gibbous throughout the night, so the sky won't be as dark as one could hope," Ms de Sales Marques said.
The forecast for Wales may also add to the challenge.
South Wales is likely to be dominated by cloud during the overnight hours, making meteors more difficult to spot.
Conditions across North Wales appear more promising, however, as clear skies are forecast into the early morning hours of Wednesday.
Here's what to expect where you live:
Cardiff
Swansea
Tenby
Aberporth
Aberystwyth
Porthmadog
Rhyl
Builth Wells
