On Monday, 19 October 2009, the European Southern Observatory (ESO) announced the discovery of 32 new extrasolar planets (exoplanets). This quickly brings up the total number of exoplanets to over 400. Read more about the discoveries made by ESO astronomers online now here.
In order to explore the temperatures that exist in a solar coronal loop, astronomers have utilized both helioseismological and spectroscopic measurements. In a paper to be published in the Astrophysical Journal Letters, a team of British astronomers offer their spectroscopically derived data in support of the helioseismologically derived data previously published. You can learn more about the data and their analysis online now here. In case you can’t wait to know the answer, the temperatures reported in the coronal loop studied are approximately 890,000 Kelvin. That’s close to the 1 million Kelvin that I find in my astronomy textbook. It is amusing to note that the authors of this paper use “seismology” and “helioseismology” interchangeably. I know geophysicicsts who wouldn’t be pleased with such looseness.
Galilean Nights: Get Ready for a Galileo Experience!
21 October 2009, Paris: The International Year of Astronomy 2009 Cornerstone project, Galilean Nights, begins tomorrow. Hundreds of thousands of people all around the world will experience their own “Galileo moment” when they look up at the sky through a telescope for the first time. Galilean Nights will be a global experience, with more than 800 public observing events in over 50 countries, and this number is still increasing each day.
The Galilean Nights is a Cornerstone project of the International Year of Astronomy 2009 (IYA2009) and takes place from 22–24 October 2009. From stargazing in the deserts of Iran to the culinary delights of food and star parties in rural Australia, and from large observing parties in the busy capital city of Uruguay to neighbours in China studying craters on the Moon, Galilean Nights is an event for people from all walks of life, all around the globe. Visit the website for information on all activities and to find an event near you: www.galileannights.org.
Amateur astronomers, societies and other groups will be setting up telescopes in public places to allow as many people as possible to look at the heavens. Astronomy enthusiasts will be taking their telescopes to shopping centres, busy streets, schools or even the squares of capital cities. The hard work of hundreds of organisers in every country will culminate over these three days when people of all ages will share the wonders of the night sky and see the objects that Galileo first observed 400 years ago. For many, it will be their first glimpse of the marvels of the heavens through a telescope, seeing breathtaking sights such as the cloud bands of Jupiter, and intricate details on our cratered Moon.
As well as seeing our planetary neighbours through a telescope, people are encouraged to photograph what they see and share the sights with the wider world through the Galilean Nights astrophotography competition. Astrophotographers of all levels of experience are enthusiastically taking part in the competition as they try to produce their own captivating photographs of the Universe. Anybody with a camera and an appreciation of the night sky can take part!
In addition to these great activities, observatories are making their facilities available to the world, for remote observing sessions. As well as attending local Galilean Nights observing events, anybody with access to the internet will be able to control telescopes on the other side of the world. Those taking part in remote observing sessions will be able to take photographs of astronomical objects from their own personal computers.
Galilean Nights is a truly global event, with hundreds of thousands of people discovering our Universe from all sorts of locations and settings around the world. Get involved, and experience your own Galileo moment!
· Galilean Nights website: www.galileannights.org
· Galilean Nights Astrophotography Competition: www.galileannights.org/competition.html
· IYA2009 website: www.astronomy2009.org
· List of Remote Observatories: www.galileannights.org/remote_observing.html
The vision of the IYA2009 is to help the citizens of the world rediscover their place in the Universe through the day and night-time skies the impact of astronomy and basic sciences on our daily lives, and understand better how scientific knowledge can contribute to a more equitable and peaceful society.
The aim of the IYA2009 is to stimulate worldwide interest, especially among young people, in astronomy and science under the central theme‚”The Universe, Yours to Discover”. IYA2009 events and activities will promote a greater appreciation of the inspirational aspects of astronomy that embody an invaluable shared resource for all countries.
The IYA2009 activities are taking place at the global and regional levels, and especially at the national and local levels. National Nodes in each state have been formed to prepare activities for 2009. These Nodes establish collaborations between professional and amateur astronomers, science centres, educators and science communicators in preparing activities for 2009. The International Year of Astronomy was proclaimed by the United Nations on 20 December 2007.