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The Observatory Science Centre
Herstmonceux
Hailsham
East Sussex
BN27 1RN
Tel: 01323 832731
Fax: 01323 832741

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Welcome

Spectacular hands-on science and discovery among the domes and telescopes of a world famous astronomical observatory.
We look forward to welcoming you through 2018......

Thank you for supporting us!
Telephone: 01323 832731
Fax: 01323 832741

October mid-term holiday programme: open daily from 10 am

During the local school mid-term holiday:
Saturday 20th – Monday 29th October
There will be guided Tours of the Telescopes and Science Shows alongside the hands-on, interactive exhibits.

Once you have paid your admission fee, there is NO ADDITIONAL CHARGE for these tours or shows.. please ask for tour and show times when you arrive.
This holiday we are presenting our popular 'NEWTON IN MOTION' science show.
Half day workshops are offered separately to the regular programme and must be booked in advance.
Workshops may have to be cancelled if less than 6 children are booked so don’t delay: call us today to secure a place 01323 832731

23rd October ‘Car of the Future’
Age 6 – 8: 10.30 am – 1 pm
Age 9 – 11: 2 pm – 4.30 pm

24th October ‘Eyes on the Universe’
Age 6 – 8: 10.30 am – 1 pm or 2 pm – 4.30 pm

25th October ‘Full Moon’
Age 9-11: 2 pm – 8 pm

The Measure of All Things

We are delighted to host this interactive exhibition presented by the National Physics Laboratory. With NPL members on site to discuss, explain and enlighten!

Available for 2 days only: 24th & 25th October 2018 included in your admission price.


• Progress in science and engineering is often linked to progress in metrology – the science of measurement. If we cannot measure something then we cannot begin to understand it (science) or improve it (engineering).
• Measurement is the quantitative comparison of an unknown quantity with a standard. In the International System of Units – the ‘SI’ – there are seven standard quantities called the ‘base units’: the second, metre, kilogram, ampere, kelvin, candela and mole.
• From May 2019 there will be subtle but profound changes in the definitions of four of these base units – the kilogram, ampere, kelvin and mole. For example, we currently define ‘one kilogram’ as the mass of a unique object called the International Prototype of the Kilogram (IPK). Worryingly, studies have shown that the mass of the IPK might be changing, but because of the definition, we have no way of knowing for sure.
• On our stand we will demonstrate a ‘Kibble balance’ which uses the new definition of the kilogram to weigh objects against an electromagnetic force rather than a gravitational force. We will also have highly interactive experiments which illustrate the other SI base units.

Operation Earth

We are proud to have been chosen as one of the 11 partner science centres to engage with this fascinating Natural Environmental Research Council (NERC) funded  project. Look out for our Operation Earth activities throughout the year and help us investigate our wonderful planet.           

For more information see our Operation Earth  page.

Exclusive Book NOW AVAILABLE

The Isaac Newton Telescope - at Herstmonceux and on La Palma
2017 EDITION NOW AVAILABLE

We have produced a limited edition of just 200 gold-foiled copies to celebrate the 50th anniversary of the inauguration of the Isaac Newton Telescope (INT).

These are available with the exclusive INT pin badge designed for us by Brighton based artist Mark Charlton.

Paperback, 104 colour and black/white illustrations.
By Anthony Wilson.
Science Projects Publishing 2017. ISBN 978 0 9512394 2 1

Exclusively available from The Observatory Science Centre shop or via mail order.
Cost £23 (including p & p)
Please call us to make card payments.

Cheques payable to 'Science Projects Ltd' and send to:
The Observatory Science Centre
Herstmonceux
East Sussex
BN27 1RN

Mark Charlton limited edition

We are delighted to have 25 of Mark's INT50 prints (A2) available from a limited print run of 50.

Just £25 Once they’re gone, they’re gone!!

We are unable to post, so payment / collection must be in person.
Please call us to discuss 01323 832731
2018 Information Leaflet
2018 Events and Activities Brochure
Spectacular Science for Schools
Cuckmere Bus
Every Wednesday from 14th February, why not leave the car at home and visit The Centre on the Cuckmere Bus! PLUS you receive reduced entry to The Centre of just £5 pp. when presented alongside a valid Cuckmere bus ticket.
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