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Curiosity Landing

HEC: Updates and News

July 2014

    June 2014

      May 2014

        • 05/18/2014: The Habitable Exoplanets Catalog was updated with a new habitable zone definition. Many images were updated with this result.
        April 2014

          March 2014

            February 2014

              January 2014

                December 2013

                  • 12/23/2013: HEC was updated with recent Kepler data that includes a new 'nearby' candidate for an Earth-like world. A new batch from Kepler was also analyzed.
                  • 12/05/2013: Today is the second anniversary of the Habitable Exoplanets Catalog. We updated the ESI ranking of some exoplanets (not much change). We added new habitable zone plots to the Results section and started a new project to estimate the number of habitable worlds from our stellar neighborhood to the whole universe.

                    September 2013

                      August 2013

                        July 2013

                          June 2013

                            April 2013

                              March 2013

                                • 03/13/2013: HEC shows now the frequency, distance, and probability of Earth-like planets.
                                February 2013

                                  • 02/26/2013: We are testing a new ESI scale. Although the original ESI is much better at evaluating similarity to Earth it depends on estimated/modelled parameters. The new scale is only based on observed values (size or mass, and stellar flux) so it is easier to use. The main difference between the two scales is that now potentially habitable exoplanets can go as low as 0.5, but in both scales Earth-like planets should have an ESI of over 0.8.
                                  • 02/18/2013: The exoplanets HD 85512 b and Tau Ceti f do not longer meet the new habitable zone criteria to be considered potentially habitable worlds. The NASA Kepler candidates sample was also reduced by half. We also announced our SPHERE project, an effort to search for Earth-like exoplanets and exomoons using the NASA Kepler data.
                                  January 2013

                                    December 2012

                                      November 2012

                                        October 2012

                                          September 2012

                                            • 09/17/2012: Stats of for all exoplanets were updated including the full database.
                                            August 2012

                                            July 2012

                                            • 07/25/2012: We are working on new content for the home page of the Habitable Exoplanets Catalog.
                                            • 07/20/2012: Five Potential Habitable Exoplanets Now. Gliese 581g was added to the main catalog.
                                            • 07/09/2012: New planets were added and updated in the main database.
                                            June 2012

                                            May 2012

                                            • 05/22/2012: Three new cold jovians were added to the general catalog.
                                            • 05/22/2012: Planets around HD 204313 and HU Aqr(AB) were added.
                                            • 05/21/2012: The planets from KOI-152 are now considered unconfirmed. The total of confirmed is back to 767 from 770. 
                                            • 05/15/2012: The database was updated with one cold and one hot jovian in HD 142 and HD 159868, respectively.
                                            • 05/14/2012: The database was updated with two new hot neptunian and one hot jovian exoplanets in KOI-152.
                                            • 05/12/2012: The database was updated with two new hot jovians exoplanets in KOI-872.
                                            April 2012

                                            March 2012

                                            February 2012

                                            • 02/29/2012: The NASA Kepler press release is available here. We took more time analyzing the Kepler data and our press release is now targeted for tomorrow March 1.
                                            • 02/28/2012: HEC was updated with the Feb 2012 NASA Kepler candidates. Stats here and full data here. A press release discussing the update and additional analyses will be posted tonight. We are working on some visualizations.
                                            • 02/27/2012: New NASA Kepler planet candidates will be available here soon (ArXiv Paper). HEC now identifies stars from the Catalog of Nearby Habitable Systems (HabCat).
                                            • 02/13/2012: New data for GJ 667Cc is now available in the DATA section. New metrics and a full database of confirmed exoplanets was also included.
                                            • 02/08/2012: Two Earth-sized planets orbiting Kepler-20 (Nature Paper).
                                            • 02/07/2012: Added a new list of unconfirmed exoplanets that includes two potential habitable exoplanets: the famous Gliese 581 g, and Gliese 667C d, a possible second habitable planet in the Gliese 667ABC stellar system.
                                            • 02/06/2012: Over 200 previously unclassify exoplanets are now classify in the Stats section. There are still 66 that we don't have enough stellar information to categorize them with respect to their habitable zone. The total number of predicted potential habitable exomoons increased from 27 to 30.
                                            • 02/04/2012: More visualizations of Gliese 667C c.
                                            • 02/02/2012: A Potential Habitable Exoplanet in a Nearby Triple Star System. (Carnegie Institution PR). We nicknamed "Vulcan" the new exoplanet Gliese 667C c. Vulcan was part of a triple star system in the Star Trek sci-fi universe.
                                            January 2012

                                            December 2011

                                            • 12/22/2011: New section: Top 10 Lists of Exoplanets.
                                            • 12/20/2011: Kepler-20 e and f (KOI-070) two Earth-size non-habitable planets: Nature and ApJ paper.
                                            • 12/05/2011: The Habitable Exoplanets Catalog (HEC) is available now. Kepler-22 b (KOI-089) did not pass our initial habitability assessments to be included in the catalog as a potential habitable exoplanet. A more detailed analysis is in progress. Here are some scientists opinions on the habitability of Kepler-22 b.