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 63 light years from us in the constellation Serpens. It is moving fast though and that is why one reason Read more…
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 visible in the south. This is Vega, the third brightest star in our sky (only Sirius and Arcturus are brighter). Read more…
The Blue Streak rocket was an advanced British missile of the 1950s which nearly became a space rocket before ending up a casualty of government apathy. Let’s look at Blue Streak’s rise and fall. These days most British economists agree that designing and manufacturing things are rather icky Read more…
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 the Large Magellanic Cloud (about 170 000 light years from us). Just how big are the stars in the Tarantula? Read more…
The Truth is out there? Conspiracy theories and pseudoscientific ideas abound. If there is life on other planets or the Universe popped into existence only a few thousand years ago we need to know! What if everything you thought you knew was wrong? We at Armagh Planetarium occasionally receive astonishing Read more…
About 490 light years from our planet in the constellation of Monoceros lies a G type star designated COROT-7. A little smaller and dimmer than our Sun, this star is circled by at least two planets, one of which, COROT-7b, is the most similar exoplanet to Earth yet discovered. Read more…
If you read the forums and the comments sections of blogs about spaceflight you will see many posts bemoaning how the conquest of space hasn’t quite gone according to plan. By now, rocket-launched capsules ought to have been rapidly superseded by reusable spaceplanes, spacestations should be huge wheel-shaped things, people Read more…
Some 150 light years from Earth in the constellation of Pegasus lies the star HD 209458 and its planetary system. The star is almost a clone of our own Sun, but one its planets is completely unlike anything in our Solar System. The exoplanet HD 209458b has a mass more Read more…
‘ Elliptical galaxy ESO 306-17 looks rather pretty in this Hubble Space Telescope image (count how many other galaxies there are in the background!). However beautiful though it may be, this galaxy could be a ravenous cannibal! ESO 306-17 is isolated in the intergalactic void possibly because it has swallowed Read more…
Saturn: the Blue Planet? The NASA/ESA Hubble Space Telescope reveals the secrets of the giant planet. This false colour image from the Hubble Space Telescope not only shows Saturn in an unfamiliar light, but displays some of the giant planet’s features. The image was created in early 2009, when Saturn Read more…