Welcome to Astronotes
Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs 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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cosmology Archive
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![Green Lantern has for decades guarded Earth and beyond from evil in the pages of comic books but the cosmic superhero is about to face his greatest challenge: can he […]](http://www.armaghplanet.com/blog/wp-content/uploads/2013/07/image-of-pulsar-115x115.jpg "The Science of Green Lantern")
The Science of Green Lantern
Posted on May 9, 2011 | 9 CommentsGreen Lantern has for decades guarded Earth and beyond from evil in the pages of comic books but the cosmic superhero is about to face his greatest challenge: can he […] -
![Gleaned from NASA and Hubblesite.org, here are some facts you may not know about the Hubble Space Telescope (HST). 1.€а€а€а€а€а The HSTтАЩs history is longer than you might have […]](http://www.armaghplanet.com/blog/wp-content/uploads/2011/03/image-of-HST-115x115.jpg "Hubble Space Telescope: Ten amazing facts you didn’t know")
Hubble Space Telescope: Ten amazing facts you didn’t know
Posted on March 5, 2011 | 23 CommentsGleaned from NASA and Hubblesite.org, here are some facts you may not know about the Hubble Space Telescope (HST). 1.€а€а€а€а€а The HSTтАЩs history is longer than you might have […] -
![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 […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/10/image-of-early-galaxy-115x115.jpg "Another galaxy, far, far away seen by HST and ESO")
Another galaxy, far, far away seen by HST and ESO
Posted on October 21, 2010 | No CommentsGalaxies, 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 […] -
![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, […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/10/image-of-gravitational-lens-115x115.jpg "Dark matter and dark energy: the deepest mysteries in astronomy")
Dark matter and dark energy: the deepest mysteries in astronomy
Posted on October 1, 2010 | 2 CommentsIn, 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, […] -
![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 […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/10/image-of-NGC4696-115x115.jpg "Elliptical galaxies: everything you need to know")
Elliptical galaxies: everything you need to know
Posted on October 1, 2010 | No CommentsWe 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 […] -
![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 […] -
![Dark matter and its part in the evolution of the Universe is revealed by new data collected by the Hubble Space Telescope. This image could be taken for a lurid […]](http://www.armaghplanet.com/blog/wp-content/uploads/2010/09/Image-of-galaxies-with-dark-matter-115x115.jpg "Hubble throws light on dark matter")
Hubble throws light on dark matter
Posted on September 24, 2010 | No CommentsDark matter and its part in the evolution of the Universe is revealed by new data collected by the Hubble Space Telescope. This image could be taken for a lurid […]