ASTRONOMY IRELAND
METEORS, STAR-B-Q AND EXTRA SOLAR PLANETS
By Glenda Cimino
Every hour of every day, the Earth experiences a rain of dust and left-over debris from the formation of the Solar System. When these particles enter the Earth’s atmosphere at high speed, the friction of the air causes them to get extremely hot. What results is a spectacular streak of light in the sky, known as a meteor. Sometimes the pieces of debris are large enough to survive the burn-up process and can make it to the ground. When they do so, they are known then as meteorites. Dr Matthew Parkes will talk about how meteorites can give us the opportunity to investigate the origins of the Solar System and how it was formed. He will explain how particularly unusual meteorites arrive on Earth (rock blasted from the surface of the Moon or Mars, for example). Finally, Dr Parkes will describe the consequences to Earth and humanity should a very large object strike our home planet.
Saturday, 22 Aug– Star-B-Q It starts at 7 pm, with gate open at 6:30 p.m. Tickets are €40 for adults and €30 for under 16s. The night begins, as ever, with an introductory slide show talk from David Moore. This is followed by barbecue food and soft drinks. There will also be a talk ‘Things you should know about astronomy and stretching your mind’ by Emlyn Jones. There will be an imaging display as well as a naked eye ‘Walk through the Heavens’ presented by Tony Ryan, ideal for getting to know the stars and constellations. The telescope viewing session is being organised by Astronomy Ireland’s David Grennan. There will be lots to see all night, including open clusters, galaxies, planetary nebulae, coloured and double stars as well as the planets. From their initial discovery in 1995, around 353 have been found, ranging from planets larger than Jupiter down to the realm of Super-Earths (planets a few times the mass of the Earth, and presumably rocky bodies).
Sept 17–19: 9th European Symposium for the protection of the Night Skies in Armagh.
Friday 9 October at 8:00pm The Cassini-Huygens mission to Saturn was launched in 1997 and entered orbit about the ringed planet in 2004. The project is a collaboration between NASA, ESA and ASI, the Italian space agency. The spacecraft is the largest ever sent to the outer solar system and it comprises the Cassini orbiter and the Huygens probe. In January 2005 the released Huygens probe descended through the atmosphere of Titan, Saturn’s largest moon, and landed on its surface. The Cassini spacecraft has continued in orbit transmitting data back to Earth about Saturn, its moons and rings. Carl Murray was selected as a member of the Imaging Team on Cassini in 1990. Carl, originally from Belfast, is the only UK member of the team. He has a particular interest in Saturn’s rings and their gravitational interaction with small moons orbiting in the Saturn system. In the talk he will discuss the Cassini-Huygens mission and show some of the spectacular images taken by Cassini’s cameras over the last five years, emphasising what has been discovered about Saturn’s ring system. For more information, contact www.astronomy.ie Above: Light pollution as seen from space. Below: Moon shadows on Jupiter. |
Back to the Front
Page