Stargazers who missed seeing the International Space Station last night as it orbited over the UK have a second chance to catch a glimpse of the spacecraft tonight.
Visble to the naked eye, the station orbits the earth roughly two hundred miles above the surface, travelling around the planet at 17500 mph – or once every 90 minutes.
It will resemble a fast-moving plane, according to Liverpool John Moores University’s astronomer Jon Marchant.
“It looks pretty much like a bright star. Given Liverpool Airport is nearby, there's plenty of opportunity to get a plane mixed up with the ISS,” he said in remarks to the Liverpool Echo.
"However, the ISS doesn't have any flashing lights and doesn't make a noise, so that's two ways to tell the difference.”
There are usually a crew of six on board, comprising American, Russian and international astronauts.
Mr Marchant continued: "Actually, the pass on the 18th of October is interesting because just after the ISS passes due south, you'll see it dim, go red, and disappear.
NASA: Space in pictures
NASA: Space in pictures
A false colour image of Cassiopeia A comprised with data from the Spitzer and Hubble Space Telescopes and the Chandra X-Ray observatory
The Barred Spiral Galaxy (NGC 6217) in the Ursa Minor constellation is pictured in Space
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Rex Features/Mood Board
The barred spiral galaxy M83, also known as the Southern Pinwheel. The Hubble photograph captures thousands of star clusters, hundreds of thousands of individual stars, and 'ghosts' of dead stars called supernova remnants
Acosmic creepy-crawly known as the Tarantula Nebula in infrared light
A spiral galaxy ESO 373-8 - together with at least seven of its galactic neighbours, this galaxy is a member of the NGC 2997 group
A massive galaxy cluster Abell 2744, according to NASA these are some of the faintest and youngest galaxies ever detected in space
A giant cloud of solar particles, a coronal mass ejection, explodes off the sun, lower right, captured by the European Space Agency and NASA's Solar and Heliospheric Observatory
Current conditions of the quiet corona and upper transition region of the Sun
First color image of the Earth taken by the Apollo 8 astronauts in 1968
Fog forming over the the US Great Lakes area and streaming southeast with the wind. A swirling mass of Arctic air moved south into the continental United States
Astronaut Mike Hopkins, Expedition 38 Flight Engineer, is shown in the second of two spacewalks designed to allow the crew to change out a faulty water pump on the exterior of the Earth-orbiting International Space Station
"What's happening is it's passing into the Earth's shadow. The astronauts will have just seen a sunset, and all the station structure would have been lit up red, just as buildings are on the ground during a sunset."
The ISS is only visible to the people on earth when light from the sun reaches it, while the ground beneath needs to remain in darkness.
The station is visible over the UK roughly every six weeks.Reuse content