Five planets will appear alongside the Moon in the night sky this week in a rare 'planetary parade'.
Jupiter, Mercury, Venus, Uranus and Mars will be visible in a straight line shortly after sunset on Tuesday evening.
Experts say people in less built-up areas will be able to see the most planets, though the phenomenon will technically be able to seen anywhere in the world with a clear sky and view to the western horizon.
Anyone hoping to catch a glimpse will need to look to the west of the sky in the moments after the sun has gone down, where the five planets should be present in a line extending about 50 degrees.
While Venus and Mars will be clearly visible with the naked eye, you will likely need binoculars or a telescope to see the rest of the planets.
Jupiter and Mercury will appear just above the horizon, with Mars located next to the moon and Venus close by. Uranus will resemble a green-tinged star, and will be above the moon.
The phenomenon was last visible in June last year, with its previous appearance coming back in 2016.
Avid skygazers were able to get a first look at the planetary parade last night, with some of the best views coming in northern Scotland.
But tonight is expected to provide the best chance to view it, with a fainter version of the phenomenon visible later this week.
Previewing the event on Good Morning Britain this morning, meteorologist Laura Tobin said: "It is a celestial treat. There will be five planets in the night sky tonight, all aligned together with the moon.
"Some people last night saw some images of what looks like stars but they are in fact planets. And it's going to be visible yet again tonight.
Tonight's Met Office forecast offers mixed chances for watching the phenomenon, with thick cloud cover expected in many western parts of the UK and patchy cloud in the west.
Areas in the far north are expected to stay the most clear. Sunset will come at 7.27pm today in London, and 7.48pm in the Highlands of Scotland.
