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
More top news
Rather cloudy with outbreaks of rain
The Duchess of Cambridge has praised the "amazing and life-changing" work of children's hospices in a touching and personal letter.
Cloudy, coastal drizzle later tonight. Breezy near the coast