Much of the green grounds of the Armagh Observatory and Planetarium comprise the Astropark: a scale model of the Universe, brought down to Earth in a beautiful natural setting.
As you stroll around it, you will discover some of the amazing phenomena in our Solar System, our Galaxy, and the Universe at large, with beautiful nature helping to bring you back to Earth.
For an even more immersive Look Around our Astropark, in which you can learn more about space, the nature around you, and our history, you can use our augmented reality app.
The Solar System Model
Our scale model of the Solar System shows you the distances between the planets on a 1:30,000,000,000 scale (1 m = 30,000,000 km, 1 ft ≈ 6,200,000 miles), and the sizes of the planets and the Sun on a scale that makes them 200 times larger (1:150,000,000; 1 m = 150,000 km, 1 ft ≈ 31,000 miles). You can check how close together the rocky planets are, marvel at the size of the Sun – represented by the white arches – or venture past the “telescope horizon” hedge to find Uranus and Neptune.
The Hypercube
The Universe is absolutely enormous, so a simple map of it wouldn’t show any of the beautiful planets, stars, or galaxies up there. To represent all of these objects, which are at different distances from us, astronomers need to get creative. We know a lot about things closer to us, but as we look further away, we can see a larger area at once, in less detail. A scale which varies like this is called a logarithmic scale, and usually uses the powers of ten. The Hypercube has three cubes nested within one another to show this in action: the large one has its sides ten times longer than the middle one, which is ten times longer again than the small cube. If we put those lengths on a logarithmic measuring stick, they would be equally spaced along it. This is the concept used to lay out the entire Universe on the Hill of Infinity.
The Hill of Infinity
Venturing out into the Hill of Infinity you will discover distant objects in the Galaxy and further afield using the logarithmic scale and the powers of ten introduced at the Hypercube. Discover how far the Pole Star is from the Earth, and how far away the Orion Nebula is, until you reach the very edge of the Universe.
The Stone Calendar
At the top of the Astropark resides the Stone Calendar. Stone circles have been used as calendars since the ancient times to help track the changing of the seasons. Our Stone Calendar will help you see where the Sun sets during the solstices and the equinoxes. A serene setting, with stunning views of Armagh, this is the perfect place to take those atmospheric photographs.
The Meadow Walk
Beyond the Stone Calendar, views of a green hillside and more of the Armagh skyline open up. A winding path leads you around the natural wildflower meadow. Watch the meadow change through the seasons. The path also takes you to the viewpoint to see the Armagh skyline.
The Armagh Skyline
Below the Stone Calendar in the Meadow Walk there is a panoramic view of Armagh encompassing the two cathedrals – the Armagh skyline. Sit on the bench and take in the view!
The Woodland Walk
There are three ways to connect between the Stone Calendar and the Solar System Model: past the Observatory, along the Hill of Infinity, or through the Woodland Walk. Our forest might be small, but it boasts a large variety of different trees, bushes, and other plants, as well as being a safe haven for innumerable squirrels, crows, magpies, jays, robins, blackbirds, and other animals. Marvel at the majestic beeches, lovely holly bushes, beautiful yew trees, towering coastal redwood, and more.
Two Augmented Reality (AR) trails are now available which tour the Astropark and the woodland. Visit the link AOP Look Around to discover more.
Ecology & the Gravity Station
With a variety of habitats, the Armagh Astropark is rich in ecology. Walk through the woodland and meadows, visit our Phenology Garden as you walk around the Astropark. Listen to the birds, observe the insects and flowers. Se if you can also spot where the most accurate measurement of gravity in Armagh was taken a couple of years ago!
Phenology Garden
The Phenology Garden can be found by following the path to the right half way up the Robinson Drive (to the Observatory). It is in the green enclosure you will see.
It is used to record the timing of the seasonal changes occurring in the plants in the enclosure, part of a scientific project monitoring an international network of such gardens.
Green Energy
We will be installing a Wind Tree and a Smart Flower solar generator in the Planetarium car park as demonstrators for renewable energy that incorporate aesthetic design principles.