Astronomers are promising a spectacular meteor shower tonight.
Multi-coloured shooting stars will race toward the Earth at the rate of more than one a minute.
Clear skies and the weak light of a new moon are set to make the Perseid shower one of the most dramatic in recent years.
It is expected to be most visible from 11pm on Sunday to 2am on Monday.
Dr Robert Massey, of the Royal Astronomical Society, said: "If you have never seen a meteor shower, this is a really nice opportunity to watch one.
"It is a very easy piece of astronomy and it can be quite spectacular.
"The nice thing about it is that it is really easy to watch. You just have to get out of bed and look toward the east.
"Even if you just watch for just a minute or two, you should see quite a few meteors."
The month-long shower can be seen for another week after this Sunday's peak.
Those seeking the best view should choose a location with as little background light as possible.
Neil Bone, a meteor expert from the British Astronomical Association, said: "Circumstances of the shower could hardly be more favourable for the UK for 2007.
"Observers should make the most of this opportunity - moonlight will severely restrict viewing in 2008."
The annual meteor shower starts when the Earth's orbit takes it across the tail of the Swift-Tuttle comet.
The comet's trail of dusty debris burns up in our atmosphere in the form of meteors that resemble streaks of light.
The shooting stars travel at around 135,000mph - 18 times the re- entry speed of Nasa's Space Shuttle.
Meteor showers are named after the constellation from which they appear to radiate. In the case of the Perseid shower, this is Perseus, which lies in the eastern sky.
The meteor shower should be visible across all parts of Britain, except where there is excessive light pollution.
It is also known as the Tears of St Lawrence because the saint's feast day - on August 10 - falls in the middle of the extended light show.
Perseid, which was first recorded 2,000 years ago, also produces so-called earthgrazers.
These are meteors that approach from the horizon and skim the atmosphere overhead like a stone skipping on the surface of a pond.