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Cosmology

IMAGE of cosmic ray tracks
Cosmology

100 Years of Cosmic Rays

Ever had a frustrating morning and wished you could ‘Hulk-out’ or that some superhuman abilities were within your grasp even for the briefest of moments?With the psyche of superheroes very much to the fore in contemporary culture, it is perhaps interesting to learn that emissions similar to those of human Read more…

By Armagh Observatory and Planetarium, 10 yearsSeptember 21, 2012 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, 11 yearsJanuary 23, 2012 ago
image of virgo galaxies
Cosmology

Our Place in the Expanding Universe

Our galaxy, the Milky Way, is just one of an enormous number of galaxies spread throughout a vast Universe, which is expanding.Everyone knows these facts now, but how do we actually know about our  place in the Universe?   Light travels through space as a wave, and hence light has Read more…

By Armagh Observatory and Planetarium, 11 yearsOctober 20, 2011 ago
Cosmology

Light from the End of the Dark Ages

A long, long time ago when the first stars and galaxies were forming, the Universe was filled with electrically neutral hydrogen. This thin soup of gas absorbed ultraviolet light and all of space would have seemed filled with softly glowing fog. The light of the first generation of stars was Read more…

By Armagh Observatory and Planetarium, 11 yearsOctober 13, 2011 ago
image-of-2009-Hubble-Ultra-Deep-Field
Cosmology

As Far as Our Eyes Can See

In more than twenty years of hard work, the Hubble Space Telescope (HST) has made both beautiful images and profound discoveries, sometimes doing both at the same time. What are its greatest contributions to science?  Hubble has enabled us to estimate just how big and how old the universe is Read more…

By Armagh Observatory and Planetarium, 11 years ago
Cosmology

Are Neutrinos Faster Than Light?

Neutrinos travel faster than light! The science world is agog at this unexpected announcement from CERN  in Switzerland. This result has to be verified, for if true it seems that one of science’s central tenets is wrong!   It’s all Einstein’s fault of course. Albert Einstein (1879-1955) came up with Read more…

By Armagh Observatory and Planetarium, 11 yearsSeptember 26, 2011 ago
Cosmology

Timespace: The Who, What and When

Time is among the most mysterious of fundamental quantities. Time was originally defined and quantified through astronomy, and today astronomers are used to glibly talking of vast stretches of time. But even after Einstein showed time to be an elastic, changing thing we still have to resolve all its mysteries. Read more…

By Armagh Observatory and Planetarium, 12 yearsMay 27, 2011 ago
Other Galaxies

Another galaxy, far, far away seen by HST and ESO

Galaxies, distant from us in space and time, have been in the news recently. Astronomers knew that far away galaxies (and hence ancient galaxies)were smaller than those galaxies closer (in time and space) to us today in the Milky Way. It was believed that the first galaxies appeared less than Read more…

By Armagh Observatory and Planetarium, 12 yearsOctober 21, 2010 ago
Cosmology

Dark matter and dark energy: the deepest mysteries in astronomy

In, say 1975, there was only one kind of ‘stuff’ in the Universe, matter made of protons and neutrons. By 1985 there was a consensus that this was not enough, the gravity of the stars in galaxies was not sufficient to hold them together. Something else was there, vast, mysterious Read more…

By Armagh Observatory and Planetarium, 12 years ago
Other Galaxies

Elliptical galaxies: everything you need to know

We all love bright and showy spiral galaxies! So much so, that we tend to overlook the elliptical galaxies which make up about 30% of the galaxies out there. Smaller than spiral galaxies, elliptical galaxies may be full of stellar living fossils, surviving virtually unchanged from an older cosmic era. Read more…

By Armagh Observatory and Planetarium, 12 years ago

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RSS Intergalactic Craic
  • 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!
  • Space is Cloudy, Who Knew? Featuring Kerem Çubuk
    This week Heather and Courtney interview Armagh Observatory PhD Candidate Kerem Çubuk on his area of research - molecular clouds! Turns out we can't escape the cloudy conditions, even millions of lightyears away.  Kerem and his colleagues also have a Youtube Channel dedicated to science communication in Turkish. To find out more, visit ahtapot.club 
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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