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cosmology

Cosmology

The deepest view of the X-ray sky

The eROSITA telescope has provided a new, sharp view of hot and energetic processes across the Universe. The eROSITA X-ray telescope has completed its first full sweep of the sky. This new map of the hot, energetic universe contains more than one million objects, roughly doubling the number of known Read more…

By Sinead Mackle, 10 months10 months ago
Astronomers

How Big is the biggest Black Hole we know of?

Before addressing Black Hole sizes, we should first go back to see what astronomers mean when they use the term “Black Hole”. This may be easiest to understand when considering the end products of stars.

By Armagh Observatory and Planetarium, 2 years2 years ago
Cosmology

The Big Bounce Theory: What is it?

    Over the past few weeks I have been hearing the term “The Big Bounce Theory,” quite a lot. At first I thought it was a sequel to the brilliant “The Big Bang Theory” TV show. When listening to the “Star Talk,” podcast by Neil De Grasse Tyson however Read more…

By Armagh Observatory and Planetarium, 4 years3 years ago
Telescopes and Observatories

JWST: A Giant Cyclops to Reveal the Depths of Space

While HST’s successor is named after the architect of the revolutionary Apollo Moon missions, an obvious tribute to the National Aeronautics and Space Administration’s second administrator, James E. Webb, the name given is perhaps also symbolic of the aspirations of all those involved in the project, that with the telescope’s Read more…

By Armagh Observatory and Planetarium, 7 years7 years ago
Space Flight

Northern Ireland’s New Space Science Technology Course

Students in Northern Ireland hoping for careers in the exciting and increasingly important space sector now can pursue a course targeting their needs. The Council for the Curriculum Examinations & Assessment’s new QCF Level 2 Space Science Technology qualification has been accredited by Ofqual and is available for first teaching Read more…

By Armagh Observatory and Planetarium, 7 years7 years ago
Stars

The Star Older Than the Universe?

Our Solar System is old. Our best estimates from radiometric dating of meteorites suggest the Sun and its planets (including Earth) were forming some 4.6 billion years ago. The Universe itself appears to be some 13.8 billion years old based on its observed rate of expansion and the properties of Read more…

By Armagh Observatory and Planetarium, 8 years8 years ago
Stars

How Far Away is the Farthest Star?

Looking up in to the night sky it’s not difficult to see why the ancient Greeks believed that all the stars in the night sky were fixed on a celestial sphere revolving around the Earth and other planets. From our view on Earth the stars appear to be at a Read more…

By Armagh Observatory and Planetarium, 8 years7 years ago
Telescopes and Observatories

ALMA: Everything You Need to Know About Europe’s Giant Eye on the Sky

Have you ever wished you could hop into a time machine, zip back billions of years and answer one of the age old questions that have plagued mankind from the first time someone peered up into the night sky? To know what exactly happened in the universe that created the Read more…

By Armagh Observatory and Planetarium, 8 years6 years ago
Cosmology

The Oldest Light in the Universe: Image of the Month

“How could the Universe we see around us be created by an explosion?” This is a question often asked by those puzzled by the scientific consensus, the standard model of cosmology, which tells of our entire Universe bursting forth in a single dramatic event, the Big Bang. Modern thinking suggests Read more…

By Armagh Observatory and Planetarium, 8 years8 years ago
Cosmology

Eternity in 365 days

The Universe is 13.75 billion years old.It is easy to say, but what does that mean in Earthly terms?Let’s squeeze the whole history of the Universe into a year!   Just to clear, we’re putting things into perspective by compressing the Universe’s whole 13.75 billion years since the Big Bang Read more…

By Armagh Observatory and Planetarium, 9 years7 years ago

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RSS Intergalactic Craic
  • Rocks to Rockets: 4 More Amazing Women in Science!
    Welcome to Season 2 everyone! Heather and Courtney kick off the new season with some amazing women in science that everyone should know. Any questions? Email us at podcast@armagh.ac.uk 
  • The Safest Dinner Party of 2020
    For the last episode of Season 1, Heather and Courtney suggest their ideal astronomy guests to a dinner party. They cover some of humanity's greatest astronomical achievements as well as discuss some of the rumours surrounding a particular famous astronomer's party behaviour! Need Some Space?
  • Turning Back The Clock - The History of AOP
    Join Heather and Special Guest Host Dr Rok Nezic as they delve into the archives and discuss the history of the Armagh Observatory and Planetarium through their favourite objects. Clocks, books, instruments and rooms, they've got it all covered, and they have a bit of craic along the way.
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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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