In a major breakthrough for exoplanet discovery and exploration, the Gemini Planet Imager (GPI) is proving to be one of most powerful and effective instruments ever invented for directly imaging planets in orbit around other stars.
The behind-the-scenes story of this project sheds light on the complexities and challenges of designing and building a truly game-changing instrument. We started work more than thirteen years ago under the leadership of Bruce Macintosh and the auspices of the Center for Adaptive Optics. At that time, a number of scientists, most from California and Canada, met to discuss building a groundbreaking adaptive optics (AO) system powerful enough to confront — and overcome — the challenging of directly collecting photons from young Jupiter-like exoplanets. The discovery of 51 Eri b, which was announced last August, is the culmination of that effort.
I decided to do something new to start the New Year. I translated a podcast from a program called Geopolitics on France Inter written by Anthony Bellanger. You can listen to the original French version here.
I like the text since it is quite optimistic and it summarizes the progresses that we have made over the past 50 years. The world is not perfect yet, but it is indeed a better place.
Are there any reasons to wish people a Happy New Year 2015?
I believe there are many and would like to explain why.
First: our health. Never have so many people all over the world been so healthy and well cared for.
It may seem strange to say that when nearly 8,000 people have died of Ebola in West Africa in recent months, and when the epidemic is far from defeated—yet it’s true.
Over the last half century , the infant mortality rate has fallen by two-thirds and the average human lifespan has increased by twenty years and continues to grow. Better yet, the difference in life expectancy between rich and poor countries is narrowing year by year.
Thanks to modern medicine, diseases that decimated entire populations throughout history are almost eradicated. The number of polio cases, for example, has fallen by 99% since 1988.
Between 2000 and 2015, the number of global malaria cases has dropped in half thanks to a global mobilization against the disease. Even AIDS, which appeared only 30 years ago, is now tested for and treated all over the world.
What about hunger and education?
Here, too, things are looking up. Hunger around the world declines annually. Since the early 90s — only 25 ago! — the percentage of undernourished people around the world has fallen by half.
The great famines that killed tens of thousands of people in the 1980s — in Ethiopia, for example —have disappeared. The world is better organized than ever and extremely efficient at delivering emergency medical and food aid when and where it is needed.
On the education front, results are even more impressive: In only 10 years, school enrollment for boys and girls has increased from 84 to 89% in primary grades and 60 to 73% in secondary grades. Around the world, three out of four children go to school until they are at least 14 years old!
We see similar improvements in the area of extreme poverty, which has fallen by 50 percent since 1990. This is unheard of in human history.
What is the source of this improvement?
We all are! Despite what we may hear or say, international institutions — the UN, NGOs and many others —work effectively: they treat, train, vaccinate, feed and intervene anywhere in the world where they are needed.
Even freedom is rising: in the last half century, the number of democratic states has tripled, and half the world’s population now lives under this type of government which — though often imperfect — is a unique achievement in human history.
So yes, one may wish people a Happy New Year, knowing that there will be wars, massacres, and many other disasters but also knowing that we have never been better educated, cared for and nurtured than we are in 2015.
Can you believe it is December already!? As usual, it is a busy month with the AGU Fall Conference. I co-organized a session on small solar system bodies with Padma Yanamandra-Fisher (PSI) and Julie Castillo (JPL). We will talk about recent discoveries in this emerging field including the discovery of rings around Chariklo, the understanding of regolith motion on asteroids, the new lander for Hayabusa 2 (MASCOT) and off course adaptive optics observations of asteroids. Below more info. See you there!
Where: Thursday, December 18, 2014 01:40 PM – 03:40 PM
When: Moscone West 3002
Why: The composition and physical properties of Small Solar System Bodies (SSSBs), remnants of the formation of planets, are key to better understand the origins of our solar system and their potential as resources is necessary for robotic and human exploration. Missions such as ESA/Gaia, NASA/OSIRIS-REx, JAXA/Hyabusa-2, NASA/Dawn and NASA/New Horizons, to study asteroids, comets, dwarf planets and TNOs are poised to provide new in situ information. on SSSBs. Recent remote observations of bright and main belt comets; asteroid Chariklo, with its ring system; asteroid and KBO binaries illustrate that the distinction between comets and asteroids is blurred, providing a new paradigm for such classification. This session welcomes abstracts on the remarkable results bringing information on the internal structure and composition of SSSBs based on space and ground-based data, numerical models, as well as instrument/mission concepts in theprospect of future exploration.
Yesterday the U.S. House of Representatives Subcommittee on Space held a hearing entitled “Exploring Our Solar System: The ASTEROIDS Act as a Key Step Planetary science“. I was curious about this act and expected the hearing to focus on interesting new ways to motivate private companies to design, launch, and operate space missions, and further the study of our Solar System.
These two papers by J.T. Wright’s group were posted today on astro-ph
The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. I. Background and Justification
J. T. Wright, B. Mullan, S. Sigurðsson, M. S. Povich
The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. II. Framework, Strategy, and First Result
J. T. Wright, R. Griffith, S. Sigurðsson, M. S. Povich, B. Mullan
Based on the analysis of WISE and Spitzer data, the authors concluded that “Kardashev Type III civilizations (a civilization that extracts fusion energy, information, and raw-materials from multiple solar systems) are very rare in the local universe”.
I remind you that we had a SETI hangout on this topic with this group, including as well Jill Tarter and Freeman Dyson in September 2013.
I look forward to reading about the search for Kardashev Type II civilizations from the same set of data.
Communiqué de presse de l’Institut SETI et de CASCA
Monday, June 09 2014 – 12:15pm, PDT
Mountain View, CA –
Cette année a été intense pour les chasseurs d’exoplanètes, ces planètes autour d’autres étoiles. Une équipe d’astronomes de l’Institut SETI et du centre de recherche de la NASA Ames a découvert 715 nouvelles exoplanètes enfouies dans les données du télescope spatial Kepler. Ces nouveaux mondes qui tournent autour de 305 étoiles différentes, constituent des systèmes planétaires multiples, similaires a notre système solaire, lui-même constitué de huit planètes. L’annonce de cette découverte a été suivie par une nouvelle encore plus importante dans le monde de l’astronomie : la même équipe a annoncé la découverte de Kepler 186f, une planète de la même taille que la Terre qui tourne autour de son étoile dans la zone dite habitable. Cette decouverte constitue une étape essentielle vers la détermination de l’existence de planètes de type Terre dans la Voie Lactée.
National Geographic asked 5W Infographics to update its 50 Years of Exploration graphic, a classic that I use often in my talks to illustrate our space exploration program and its focus on the inner part of the solar system.
The updated version, renamed “Cosmic Journey“, is spectacular, better organized and easier to follow than its predecessor. It has been updated to include new missions sent over the past 4 years. The new color code includes the paths of failed, as well as successful, missions and also the nation that led them.
Source: SETI Institute Press-release
MOUNTAIN VIEW, CA – For the first time, an Earth-sized planet has been found in the habitable zone of its star. This discovery not only proves the existence of worlds that might be similar to our own, but will undoubtedly shape future investigations of exoplanets that could have terrestrial surface environments.
Some may say that our universe is full of beauty, others argue that it is our solar system that surprises us the most, but ultimately I will say that it is the world of small solar system bodies which is strikingly full of diversity. Today’s announcement of the discovery of rings around the Centaur Chariklo by an international team of astronomers is a vivid proof that small solar system bodies have not yet revealed all their secrets.
David Morrison, director of the Carl Sagan Center of the SETI Institute, has written a biographical memoir of Carl Sagan (1934-1996), founder of the modern disciplines of planetary science and exobiology.