Showing posts with label Direct Imaging. Show all posts
Showing posts with label Direct Imaging. Show all posts

January 1, 2009

The Future of Exoplanetology


They say the best way to predict the future is to invent it. Here is how the future will be invented as seen from the lens of Exoplanetology. The list below can be treated as a roadmap for those involved. It can also be considered as a hopeful glimpse of what is to come.

1) Deluge of Exoplanets - between 60 to 80 new exoplanets within 2009 will be discovered. Last year's forecast of 60+ new exoplanets for 2008 came true. Yet again, there is no reason why this year's planet-hunt won't be as exciting as last year.
2) New Eyes - The development of new generation telescopes (both space-based and land-based) will continue from this year onwards to bring unprecedented new discoveries. See this list of telescopes to see astronomy's new arsenal, which includes Kepler, Terrestrial Planet Finder (TPF), James Webb Telescope, Spitzer Telescope, New Worlds Mission, and Space Interferometry Mission (SIM). Although direct imaging technique will continue to make waves in the news, transit method will continue to pile up new exoplanet discoveries. The power of a new set of eyes will set the stage for amazing things that is to come.
3) New Brains - data gathered by some new generation telescopes will gradually be opened up for public consumption starting in 2010 or 2011. Number-crunchers, algorithms and software will sift through terabytes and petabytes of collected data to discover new planets by way of numbers, statistics, and computation. Candidates for "habitables", exoplanets that lie inside the habitable zone (HZ), will be filtered from massive amounts of data, helping telescopes identify good interesting targets.
More powerful but cheaper computers, with dual core or multiple core set up in parallel, will enable more detailed simulations of planet-formations and alien solar systems, providing better insights for exoplanet science.
4) Amateur Boom - Amateur exoplanetology will explode. Projects similar to Systemic, SETI@home (or their mashup) will enable amateurs to contribute to science. Crowdsourcing, baby! Or call it Amateursourcing!
Cheaper and more powerful telescopes, and affordable CCDs for differential photometry will enable amateur astronomers to discover new exoplanets, a la do-it-yourself (DIY) exoplanet-hunting. This will take off, possibly going mainstream in amateur astronomy sometime in 2010 or 2011 onwards.
5) Signs of life - More signs of life beginning in 2010-ish. More organic clues detected in atmosphere of exoplanets. Strong evidence will continue to mount, pointing to the ever-growing possibility of extra-terrestrial life.
6) Superdupers - More Super-Earth detections will become more common starting in 2011 or 2014. "Habitables" or "Habs" will pour in. Water-worlds will flood the news.
7) Exotics - Exomoon detection capability takes off in 2012 to 2014. New exotic discoveries will also start to pour in. Classifying celestial objects becomes even more challenging for astronomers. Imagine earth-sized exomoons with their own moons! What will you call them? Exomoonoids?
8) Earth Galore - More and more Habs and earth-like planets in habitable zones between 2015 to 2020 will pour in. Advances in technology and planet-hunting methods will enable us to resolve exoplanets the size of earth and smaller. There will then be more than a thousand total exoplanets in the list. Direct-imaging methods will be in greater demand as ever.
9) Shockwave - Mankind will be thrown in a theological and religious turmoil. A period of adjustments in worldviews will occur as mankind tries to make sense of their being amidst the impending discovery of another earth with life.
Spiritual individuals have no problems with it whatsoever. But Religions will start to revise old beliefs and begin re-interpreting scriptures to prepare for the ramifications of the discovery of...
10) Life - Scientific confirmation of exo-life happens between 2020 to 2030-ish. Astrobiologists will finally confirm that life exists on another planet of another star. It may not be in an earth-like exoplanet at all, perhaps not even in a planet, and may not even be life-like. It is something so incredible that no one has ever predicted.



November 13, 2008

Worlds Imaged and Worlds Imagined

Today marks a great stride in how we see exoplanets, which have always remained as figments of our imagination and speculations. Where previous techniques only enable us to infer their existence by way of statistics, light curves, graphs and spectra, the big news today shows us direct images of extrasolar worlds.
While most exoplanets detected to date have been discovered using techniques such as Astrometry, Radial Velocity, Transit Method or Gravitational Microlensing, none would ever cause so much news coverage and impact as a "photograph" of another world. (Twitter went down shortly after the announcement, perhaps due to too many tweets about it). Although a huge bulk of future exoplanet discoveries would continue to be discovered by indirect techniques of planet detection, the method of Direct Imaging will pick up in the coming years, and soon we will finally see a photo of extrasolar continents.
The promise of the next generation of telescopes such as the Terrestrial Planet Finder (TPF), James Webb Telescope, Spitzer Telescope, New Worlds Mission, Kepler, and Space Interferometry Mission (SIM), will be bring even more amazing imagery. But hats off to good 'ol Hubble, who continues to bring us stunning pictures, in this case a snapshot of Fomalhaut b.
Artists will continue to bring us closer to these alien worlds, while computer simulations will always provide new insights, but imagination always will be our mind's eye.
Just imagine what goes on inside the mind of a child as you stand together gazing up in the night sky, and you point to a star and say, "that star over there has a planet, yeah that one right there..."
It's amazing, NOW we can finally say it with absolute certainty, just like that.
Just like that.



Other Links:
NASA/ESA Hubble
Physorg
Discovery Channel
Cosmic Ray
More on FomalHaut b

September 15, 2008

Young Exoplanet says "Cheese!"

Young ExoplanetIn what may be the first ever picture of an Exoplanet orbiting a sun-like star, the image shown is of a young star named J160929.1-210524 and its potential planet. This extrasolar system lies 500 light-years from Earth and the exoplanet has been measured to have a mass 8 times that of Jupiter.
Until now, the only planet-like bodies that have been directly imaged outside of the solar system are either free-floating in space, or orbit brown dwarfs, which are dim and make it easier to detect planetary companions.
The Gemini North telescope on Mauna Kea in Hawaii was used to take the images utilizing adaptive optics technology to dramatically reduce distortions caused by the Earth’s atmosphere. The near-infrared images and spectra of the suspected exoplanet indicate that it is too cool to be a star or even a more massive brown dwarf, and that it is young. Taken together, such findings confirm that it is a very young, very low-mass object at roughly the same distance from Earth as the star.
Although it will take up to two years to verify the validity of this photograph the method used by the team is quite ingenious by "..targetting young stars so that any planetary mass object they hosted would not have had time to cool, and thus would still be relatively bright. This is one reason we were able to see it at all.”

Links:
http://arxiv.org/abs/0809.1424
http://www.gemini.edu/sunstarplanet
http://www.msnbc.msn.com/id/26722406/