From: TerryMoselaol.com

Date: 5 October 2010 23:53:14 GMT+01:00

Subject: Irish supernova, WSP, 4 Lectures, Cassini Comp, ISS, V. dark Cork Sky

Hi all,

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1. FIRST IRISH SUPERNOVA! Dave Grennan, discoverer of two asteroids, the first of which was the first one discovered in Ireland for a century and a half, has now discovered a supernova in a distant galaxy - the first ever such discovery from Ireland. And all from his own observatory in Raheny, North Dublin!

ƒŠƒŠ The galaxy is 290 million LY away, so the star actually exploded before even the age of the dinosaurs, and the light has been travelling through space ever since!

ƒŠƒŠ There are various types of supernovae (use your favourite search engine for more info!), and this one seems to be a "type 1 b/c", but with various peculiarities, making it particularly interesting. This type is caused by rapid transfer ofƒŠmaterial from one star to another in a close binary system, making the receiving star unstable so that it undergoes a massive explosion.

ƒŠƒŠ Dave's discovery was made during a search undertaken on September 17th, but as independent confirmation is required, it has only just been officially announced. It is now designatedƒŠas 2010ik. See www.cfa.harvard.edu/iau/lists/RecentSupernovae.html

ƒŠƒŠƒŠ Supernova expert Prof. Stephen SmarttƒŠof QueenâÀÙs University Belfast and his teamƒŠused the 2.5metre Nordic Optical Telescope at La Palma in the Canaries to analyse the spectrum & confirm the type of supernova explosion.ƒŠ

ƒŠVery many congratulations Dave - all your skill, determination &ƒŠhard work pays off in the long run!

ƒŠƒŠƒŠ

2. TheƒŠnext IAA LectureƒŠ will be on Wed 6ƒŠOctober, in the Bell Lecture Theatre, QUB, It will beƒŠgiven byƒŠDrƒŠMartin HendryƒŠof the Astrophysics Department at Glasgow University.ƒŠTITLE: "Did we really go to the Moon?"

ƒŠƒŠI'm sure all of you have heard of the various conspiracy theories which claim that the Apollo astronauts did not really land on the Moon, and that the whole thing was a gigantic fake, filmed in some vast hidden secret film studio. The proponents of this claim put forward various arguments about the lighting of the scenes on the Moon (or in the studio, as they claim), the lunar dust, the rocket exhausts etc etc. Dr Hendry provides a very informative, entertaining, and well illustrated analysis of these theories, and describes how they .... Well, you'll just have to come along and find out! Others argue that in fact the Americans actually landed on the Moon decades earlier to meet up with the Aliens, and that the Apollo flights were just a cover up!ƒŠWhether you believe any of these theoriesƒŠor not, it'sƒŠa brilliantƒŠlecture, and oneƒŠyou won't want to miss! Assuming that the Aliens don't abduct him before he gets here!

Time: 7.30 p.m. Venue: Bell Lecture Theatre, main Physics Building, Queen's University, Belfast. Free parking is available on the main campus, right beside the lecture theatre, from 5.30 pm onwards. Admission free, including light refreshments: All are welcome. See www.irishastro.org for full details of the programme.

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3. Whirlpool Star Party, 9-10 OctƒŠ-

The event will be held as usualƒŠin DooleyâÀÙs Hotel, Birr, Co. Offaly and a full programme of lectures is scheduled along with observing, if clear,ƒŠfrom the grounds of Birr Castle in the lee of the great Leviathan, the historic 72-inch telescope built by the 3rd Earl of Rosse in the 19th Century. Speakers include Prof John Brown, Dr Lyndsay Fletcher, Mr Tom Boles, Mr Leo Enright, Dr John Quinn, Dr Niall Smith.ƒŠƒŠ

Full details of the weekend can be found at http://www.birrcastle.com/events-exhibitions-birr-castle-ireland.php

ƒŠƒŠ I have a list of all the known accommodation in Birr and the surrounding area (over 100 places) which I will send to anyone on request, but I'll attach the names of the B&B's and GH's closest to Birr at the end of this E/M: If you can't get booked in any of those, you may have toƒŠtry some of the others from the complete list.

ƒŠƒŠƒŠ

4.ƒŠ Free Public Lecture in TCD, 18 October: "Dark Energy and the Accelerating Universe: Einstein's Blunder undone!"ƒŠƒŠby Prof Bob Kirschner of Harvard University.

ƒŠƒŠ Ten years ago, astronomers found astonishing evidence that the expansion of the universe is speeding up. We did thisƒŠby observing exploding stars half way across the observable universe. ƒŠWe attribute cosmic acceleration to a mysterious "dark energy" that speeds up cosmic expansion, but whose nature we do not fully understand. ƒŠCuriously, in 1917, EinsteinƒŠinvented the "cosmological constant" as a kind of cosmic repulsion, to balance out gravity to produce a static universe.ƒŠƒŠHe abandoned it in the 1930s when theƒŠuniverse was found to be expanding. These new results show we need a form of "dark energy"ƒŠthat is very much like Einstein's cosmological constant to explain the universe we live in. ƒŠIn this strange new picture of the universe, dark energy makes up about 70% of the universe, dark matter about 25%, and only 5% is composed of the ordinary matter that makes up galaxies, stars, planets, and people.

Venue: Edmund Burke Theatre, Arts Block, Trinity College Dublin, Time: 19:30, Admission free.

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5. Cassini Scientist for a Day competition.

ThisƒŠis open to pupils agedƒŠ11-18 yrs oldƒŠin all schools in IrelandƒŠ

Glenlola Collegiate in BangorƒŠwon one of the first prizes a couple of years ago so it would be good to get another great response.

ƒŠThe Cassini Mission to Saturn is one of the greatest robotic space exploration missions of our time. Now you have an opportunity to become involved and maybe put your schoolâÀÙs name on the map internationally.

How: ƒŠBy taking part in The Cassini Scientist for a day Contest 2010

Why: This contest increases awareness of space exploration, technology, engineering and science.

ƒŠƒŠ The Task: Write a 500 word essay on why the Cassini Spacecraft should target certain objects for imaging and investigation.

ƒŠƒŠ How do I do that? WatchƒŠ three shortƒŠ videos, decide which is the most interesting for you, write your essay based on that.

ƒŠ The Cassini website would be your main source of reference for information.ƒŠWatch this video for an introduction: http://saturn.jpl.nasa.gov/education/scientistforaday9thedition/international/

ƒŠƒŠ Watch these videos to choose your essay subject Rhea, Titan or Saturn itself? You decide, its your adventure. http://saturn.jpl.nasa.gov/education/scientistforaday9thedition/targets/

There are three age groups: 11-13 years old, 14-16 years old, 17-18 years old

The Prizes: All winners will be given a copy of their chosen target image which will be taken by the Cassini spacecraft in October 2010. The youngest category winner will also get an iPod shuffle and books by Lucy Hawking. The middle category will win a Nintendo DS and books by Lucy Hawking. The oldest age category winner will be offered a one week research placement with Professor Carl Murray from Queen Mary University London.

Deadline 5 p.m. onƒŠNovember 5^th Include your name, age, postal address, name of your school, name of teacher, teacher's email address.

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6. The ISSƒŠhas started another series of morning passes over Ireland: details for your location are on www.heavens-above.com.

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7.ƒŠPublic Lecture by Dame Prof Jocelyn Bell Burnell "Will the world end in 2012? - The astronomical evidence.

ƒŠ12 Nov, 7.30 p.m. RIA Dublin. Admission free, but by ticket only.ƒŠBook via www.ria.ie

ƒŠ

8. PUBLIC LECTURE, ARMAGH, 18 November: The Biennial "Robinson Lecture" will be given by Prof Chris Impey of the University of Arizona, in the City Hotel, at 8 p.m. "Astrobiology: Implications of Life Beyond Earth"ƒŠ

ƒŠƒŠƒŠ Either we are alone in the universe or not; either way, the implications are staggering. This talk considers the prospects for and implications of life beyond Earth. Biological adaptation to extreme conditions makes it very likely that variations on biology will be present on moons and planets around many of the billions of Sun-like stars in the Milky Way. The nearly 500 planets already found around other stars are forerunners of Earth-like planets that astronomers expect to be finding in the next few years. With exobiology still a blank slate, consideration will be given to potentially unusual forms of life.

ƒŠƒŠƒŠƒŠ Attendance at the Robinson Lecture is free, but if you would like to attend the Robinson Lecture, please contact the Armagh Observatory in order to obtain tickets. Please write, telephone or send an e-mail to: Mrs Aileen McKee, Armagh Observatory, College Hill, Armagh, BT61 9DG; Tel: 028-3752-2928; Fax: 028-3752-7174; e-mail: ambn arm.ac.uk.

See http://star.arm.ac.uk/publicevents/index.htmlƒŠ

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9. VERY DARK SKY IN WEST CORK: Just back from a great trip to Cork & West Cork. We sawƒŠone of the darkest skies I've seen recentlyƒŠin Ireland from near our B&B north of Rosscarbery, on Sunday night. M13 was clearly seen with the unaided eye, in spite of being only about 45 degrees above the horizon. And I gave up trying to count the number of stars visible in the Square of Pegasus (not that they were innumerable, but there were so many visible that it was hard to keep track of them asƒŠI counted them!).ƒŠMeasurements with a Sky Quality Meter gave aƒŠfigure ofƒŠ21.56 for theƒŠmagnitude of the sky brightness per square arcsec of sky. In other words, the total light coming from the skyƒŠcentred onƒŠthe zenith (including all the stars, the Milky Way etc)ƒŠwas the equivalent of one star of magnitude 21.56 spread overƒŠeach square arcsecond of sky, on average. Not bad, eh? That's the way it should be!

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Clear skies,

ƒŠ

Terry Moseley

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