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Sun

History and Heritage

William Herschel — Measuring Sunspots With A Field of Wheat

Written by Chris Duffy, PhD Candidate AOP William Herschel, who died 200 years ago this year, is famous for a number of things we take for granted in modern astronomy, not least his discovery of Uranus in 1781 the first planet discovered in the modern era of astronomy. Less known Read more…

By Courtney Allison, 5 monthsOctober 14, 2022 ago
Science Fiction

PARTIAL SOLAR ECLIPSE 2021 JUNE 10

Armagh Observatory and Planetarium reports that, if skies are clear on the morning of 10th June 2021, sky-watchers will witness a partial eclipse of the Sun. A solar eclipse occurs when the Moon passes between the Earth and the Sun, in effect casting a shadow on our planet. When the Read more…

By Apostolos Christou, 2 yearsJune 4, 2021 ago
Solar System

Of trees, colanders and solar eclipses

What do a tree, a colander and a piece of cardboard have in common? The answer: they can all be used to observe a solar eclipse! Our Sun – the brightest star in the sky – has been the subject of intense scrutiny ever since human beings began to interrogate Read more…

By Apostolos Christou, 2 yearsJune 1, 2021 ago
Latest News

How to determine if an emission line is optically thin or thick?

The transition region in the Sun is the atmospheric layer that separates the cooler chromosphere from the hotter corona. Studying the structure and dynamics of the transition region requires greater attention as these provide critical information on the supply of mass and energy from the lower atmosphere to the corona and Read more…

By Apostolos Christou, 3 yearsApril 30, 2020 ago
Research News

Dynamics and energetics of solar coronal loops

By Professor Gerry Doyle The solar chromosphere is a complex magneto-plasma system that offers the evolution of a variety of plasma dynamics (e.g., jets, mass motions, shocks) as well as magnetic waves. It is separated by the inner corona through the particular discontinuities of mass, density, temperature, characteristic speeds, etc. Read more…

By Apostolos Christou, 3 yearsApril 8, 2020 ago
Research News

THE SUN AS WE’VE NEVER SEEN IT BEFORE: CLEAREST AND MOST DETAILED IMAGES YET OF THE SUN RELEASED

Just released are first images and videos from the National Science Foundation’s (NSF) Daniel K. Inouye Solar Telescope (DKIST) – revealing unprecedented detail of the Sun’s surface, with experts saying it will enable a new era of solar science and a leap forward in understanding the Sun and its impacts Read more…

By Apostolos Christou, 3 yearsJanuary 30, 2020 ago
Earth Satellites

Armagh astronomers study solar explosions

AOP researchers have used data from a NASA space mission to shed light on one of the most violent phenomena in our solar system – magnetic explosions on the surface of the Sun. Abhishek Srivastava, formerly a research associate at AOP and now a solar scientist at the Indian Institute Read more…

By Apostolos Christou, 3 yearsDecember 19, 2019 ago
Solar System

Transit of Mercury
 Monday 11th November 2019

Observers in Ireland and Great Britain will have an opportunity, weather permitting, to observe a rare astronomical event on Monday 11th November, when the planet Mercury will transit across the Sun. Transits occur when a planet lies directly between the Earth and the Sun. With suitable observing equipment, Mercury may Read more…

By Apostolos Christou, 3 yearsNovember 1, 2019 ago
Research News

The First Ever Finding of a Signature of Forced Reconnection in the Large-scale Solar Corona

The Sun’s corona is maintained at a temperature in excess of a million degrees. The corona lies above the solar photosphere which is maintained at 6000 degrees. These regions are only a few hundred kilometers apart. A major scientific problem in solar physics is how and why is the corona Read more…

By Apostolos Christou, 3 yearsOctober 12, 2019 ago
Michael Burton

Spectroscopy and The Discovery of Helium

To follow on from last week’s post on grid computing in our series on the technological applications of astronomy to society we have an article on spectroscopy and the discovery of a new element in the cosmos – helium – by Armagh Observatory and Planetarium’s Michael Burton. He is our Read more…

By Michael Burton, 4 yearsMay 23, 2019 ago

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RSS Intergalactic Craic
  • S3Ep2 - Wee Bitta Craic: Bout Ye Zuri?
    In the latest Wee Bitta Craic episode, Alice and Ethan ask Zuri all about how she came to be at Armagh Observatory and Planetarium doing her PhD. Find out more about Zuri's journey to get to where she is today, and laugh along as the guys have quality banter. If you love listening to our […]
  • S3Ep1 - Wee Bitta Craic: Welcome Ethan, Alice and Zuri!
    Want a Wee Bitta Craic? Then say hello to some of our PhD students, Ethan, Alice and Zuri. They will be hosting their own Wee Bitta Craic episodes and will give you an insight into the life of a PhD students here at AOP!
  • Season 3 - What's the craic?
    What's the Craic? Intergalactic Craic is back and it's shaking things up! Join Heather and her brand new co-host to find out more!
Welcome to Astronotes

Hello and welcome to Astronotes, the Armagh Observatory and Planetarium’s official blog. Here you will find the latest news and views from all those who work in our organisation, from the fascinating worlds of astronomy and space exploration. We hope you will come here to learn what is hot and exciting, profound or even weird from worlds beyond ours . So that's the introduction out of the way, now on with the Universe!

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