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One of the rarest astronomical events will take place in the early hours of Wednesday morning when Venus passes directly between the sun and Earth. It won't happen again until 2117.
Stargazers are being warned not to look directly at the sun and to use special glasses to avoid damaging eyesight.
During the astronomical fly-by Venus appears as a small, dark round spot.
It is due happen at around 5am UK time.
There are more details about what to expect on NASA's website.
Latest ITV News reports
The planet Venus has moved across the face of the Sun in a rare astronomical event that will not happen again until 2117.