stars Archive
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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 […] -
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 […] -
Supernovae spotted by Irish astronomer
Posted on October 6, 2010 | 1 CommentDavid Grennan, an amateur from Dublin, has thrilled astronomers with his discoveries€а of supernovae in€а distant galaxies. Here is the inside story of his admirable achievements. Astronomy is one of […] -
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 […] -
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 […] -
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 […] -
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 […] -
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 […]