Scientists in the East are celebrating the successful launch of the most powerful space telescope ever built.
Gaia will travel four times the distance of the moon, mapping the precise positions of a billion stars, and sending the information back to Cambridge University.
Sarah Beecroft watched the launch live from Astrium in Stevenage, where much of the work on the satellite was carried out.
Click below to watch a report from Sarah Beecroft
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Risk of heavy rain overnight and later Sunday.
Dry for much of the day. Some rain this evening.
It will be a fine start to the Bank Holiday weekend but there's a risk of heavy rain in some places by Sunday.