Welcome to Astronotes
Hello, IòÀÙm Colin, welcoming you to Astronotes, the PlanetariumòÀÙs official blog. Here you will find the latest news and views 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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stars Archive
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![Cepheid variables are massive, pulsating stars, valued by astronomers for the precise link between their brightness and steady pulsation. Let’s look at the history of Cepheid variables and how recent […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/11/Image-of-eclipsing-binary-115x115.jpg "Cepheids: Inconstant Stars which break the rules")
Cepheids: Inconstant Stars which break the rules
Posted on November 26, 2010 | 6 CommentsCepheid variables are massive, pulsating stars, valued by astronomers for the precise link between their brightness and steady pulsation. Let’s look at the history of Cepheid variables and how recent […] -
![Could HIP 13044 b be the strangest exoplanet yet found? We are getting used to the discoveries of bizarre exoplanets but newly-discovered world HIP 13044 b not only survived the […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/11/image-of-HIP-13044-b-115x115.jpg "ESO finds weird doomed planet from another galaxy")
ESO finds weird doomed planet from another galaxy
Posted on November 19, 2010 | 1 CommentCould HIP 13044 b be the strangest exoplanet yet found? We are getting used to the discoveries of bizarre exoplanets but newly-discovered world HIP 13044 b not only survived the […] -
![David Grennan, an amateur from Dublin, has thrilled astronomers with his discoveriesˆà of supernovae inˆà distant galaxies. Here is the inside story of his admirable achievements. Astronomy is one of […]](http://www.armaghplanet.com/blog/wp-content/uploads/2011/09/Image-of-supernova-115x115.jpg "Supernovae spotted by Irish astronomer")
Supernovae spotted by Irish astronomer
Posted on October 6, 2010 | 1 CommentDavid Grennan, an amateur from Dublin, has thrilled astronomers with his discoveriesˆà of supernovae inˆà distant galaxies. Here is the inside story of his admirable achievements. Astronomy is one of […] -
![Imagine that once the Sun sets, rather than a dark sky sprinkled with a few thousand dim stars, we had a sky blazing with ten thousand or so stars blazing […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/10/Image-of-the-NGC-3603-Young-Cluster-115x115.jpg "Hubble shows us a spectacular star cluster")
Hubble shows us a spectacular star cluster
Posted on October 1, 2010 | No CommentsImagine that once the Sun sets, rather than a dark sky sprinkled with a few thousand dim stars, we had a sky blazing with ten thousand or so stars blazing […] -
![Here’s how rainbows are made. Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/09/image-of-a-rainbow-115x115.jpg "Following a rainbow back to the Big Bang")
Following a rainbow back to the Big Bang
Posted on September 27, 2010 | No CommentsHere’s how rainbows are made. Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a […] -
![At first glance Gliese 710 is not a very distinguished star. A K7 class orange dwarf a bit more than half as massive as the Sun, it currently lies about […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/09/When_Worlds_Collide_Book_Cover-115x115.jpg "Will a rogue star cause chaos in the Solar System?")
Will a rogue star cause chaos in the Solar System?
Posted on September 22, 2010 | No CommentsAt first glance Gliese 710 is not a very distinguished star. A K7 class orange dwarf a bit more than half as massive as the Sun, it currently lies about […] -
![Around this time of year, go outside after 9pm on a clear night and look at the sky. Even if it is not quite dark a bright star will be […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/09/Summer_Triangle-115x115.jpg "Altair, Deneb and Vega: three easy to spot stars")
Altair, Deneb and Vega: three easy to spot stars
Posted on September 22, 2010 | 2 CommentsAround this time of year, go outside after 9pm on a clear night and look at the sky. Even if it is not quite dark a bright star will be […] -
![Astronomers in search of really, really big stars look to the Tarantula Nebula. Also known as 30 Doradus (or even NGC 2070), this is a very active star-forming region in […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/09/ophan-star-in-30-Doradus-115x115.jpg "Hubble images orphan star")
Hubble images orphan star
Posted on September 22, 2010 | 4 CommentsAstronomers in search of really, really big stars look to the Tarantula Nebula. Also known as 30 Doradus (or even NGC 2070), this is a very active star-forming region in […]