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EXO WORLDS
A golden age of exoplanet discovery
by Staff Writers
London, UK (SPX) Jun 20, 2011

The seminar was held hot on the heels of an announcement from CoRoT - a space telescope operated by the French space agency CNES which speaker Dr Suzanne Aigrain is involved with - about the discovery of ten new planets, including one orbiting a star possibly only a few hundred million years old, twin Neptune-sized planets, and a Saturn-like world.

An exciting meeting yesterday, Wednesday 15 June 2011, held at the Institute of Physics (IOP) in partnership with the Royal Astronomical Society (RAS), saw leading experts explain how far the field of exoplanet detection has advanced since the first confirmed detection in the early '90s.

Now that more than 550 exoplanets have been detected, and with increasingly frequent detections being announced by global teams working with space- and ground-based telescopes, the speakers explained how we have entered a golden age of discovery.

Chaired by the President of IOP, Professor Dame Jocelyn Bell Burnell, the speakers - Professor Hugh Jones from the University of Hertfordshire, Dr Suzanne Aigrain from the University of Oxford and Dr Giovanna Tinetti from University College London - took the audience through the history of exoplanet detection, and explained the techniques being used to maximise our understanding of planets beyond our solar system.

After Professor Jones' introduction to the field and Dr Aigrain's description of some of the methods used to map out and understand the full population of exoplanets in our galaxy, Professor Dame Jocelyn Bell Burnell remarked, "how exciting it is to think that there are probably more exoplanets than there are stars in our night sky."

The field has progressed from early identification of gas giants, dubbed 'hot Jupiters', to slightly smaller but still uninhabitable 'Neptunes', and now 'super earths'; planets with a mass only five to ten times that of our Earth's.

As researchers move ever closer to finding Earth-mass planets in the 'Goldilocks Zone' - realms of space the correct distance from stars for orbiting planets to be at a temperature that allows the existence of water and, possibly, harbours life - Dr Tinetti described the progress being made in techniques used to analyse environments on planets thousands of light years from Earth.

Topics raised in the question and answer session which concluded the event included the parameters of inquiry used in the attempt to identify life-harbouring planets - from the strength of gravity to the stability of orbits - and, a bit closer to home, what efforts humankind makes to identify hazardous near-Earth objects, such as asteroids.

The seminar was held hot on the heels of an announcement from CoRoT - a space telescope operated by the French space agency CNES which speaker Dr Suzanne Aigrain is involved with - about the discovery of ten new planets, including one orbiting a star possibly only a few hundred million years old, twin Neptune-sized planets, and a Saturn-like world.

A report from the event is due out in the autumn.

An introductory guide to exoplanets




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EXO WORLDS
CoRoT's new detections highlight diversity of exoplanets
Paris, France (ESA) Jun 15, 2011
Ten new exoplanets have been discovered by the European satellite, CoRoT. Confirmed via meticulous, ground-based observations, these exoplanets exhibit a wide variety of masses, densities, orbital parameters and other properties, highlighting the broad diversity of planets around stars other than our Sun. The inventory includes seven hot Jupiters, a planet smaller than Saturn and a system of two ... read more


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