About Us
Stellar Weather Watch
In a new paper, Simon Jeffery reports the discovery of standing waves on two small hot stars similar to the pattern of jet streams seen in the Earth’s atmosphere.
About Us
COVID 19, the R–factor and the Hill of Infinity in Armagh
How astronomy can help us understand the spread of a pandemic Article by Michael Burton, Director of the Armagh Observatory and Planetarium The Hill of Infinity of Armagh, in the Astropark of the Observatory and Planetarium, contains a scale model of the universe, illustrating the place of planet Earth in Read more…
Astronomers
DY Centauri – stellar evolution while you watch
By Simon Jeffery, AOP Research Astronomer In 1930, Dorrit Hoffleit reported that star number #4749 in the Harvard List of variables had faded four times between 1897 and 1929, and identified it as an R Coronae Borealis (RCB) variable. RCB stars are luminous low-mass stars (red giants) with surfaces around Read more…
PhD Students
Stellar Flares and Star Spots unexpectedly found to be uncorrelated
By Christopher Duffy Studies of the sun, our closest star, have shown that sun spot activity and solar eruptions, also known as solar flares, are strongly correlated – regions of the sun with many sun spots are found to be the typical point of origin for most solar flares. This Read more…
Astronomy & You
February Night Sky
Moving on to our February Night Sky article (already) featuring htings to look out for while the sun still sets nice and early. Watch out for the cold, though!
Our Galaxy
SALT 2019
Lying somewhere between young main-sequence stars and old white dwarfs, hot subdwarfs are blue stars with about half the mass, a tenth the diameter and ten times the brightness of the Sun.
Astronomy & You
Calendars, Clocks & Navigation
Continuing our weekly instalments outlining astronomy’s impact on your everyday life, we have an article by Jan Mathijs van der Hulst. Thijs is an astronomer, Professor of Radio Astronomy at the University of Groningen, and member of the IAU’s Division B steering committee. Below he outlines how time keeping owes Read more…
Armagh Planetarium
May Night Sky 2019
There’s lots to look forward to in the Month of May: the evenings are brighter, there’s the promise of good weather and most importantly – not one, but two bank holiday weekends! There’s also lots to look forward to and look out for in May’s night sky. There’s the chance Read more…
Armagh Planetarium
M87: Our Reactions
While you may be familiar with black holes from sci-fi and many artists’ renditions of the phenomenon, our first actual view of the event horizon of the supermassive black hole which is at the centre of a neighbouring galaxy, Messier 87, was released 4 weeks ago to the day. What Read more…
April
The Night Sky – April 2019
Looking up at the wonders of the night sky is an amazing pastime, and whether you use a telescope or binoculars all you really need is the naked eye, but remember to give your eyes at least 20 minutes to adapt to the dark to ensure that you can see Read more…