April 1-3 – WCRP Regional Workshop on Stratosphere-Troposphere Processes and their Role in Climate, Kyoto, Japan
April 2-5 – 47th ESLAB Conference: The Universe as Seen by Planck, Noordwijk, The Netherlands
April 2-5 – Conference: The Chemical Cosmos, Windsor, United Kingdom
April 3 – Lecture: Teaching Old Spacecraft New Tricks, London, United Kingdom
April 3 – Lecture: Apollo Science – A Personal Retrospective, London, United Kingdom
April 3-4 – 13th BritGrav (British Gravity) Meeting, Sheffield, United Kingdom
April 3-5 – Workshop: Exotic Physics with Neutrino Telescopes, Marseille, France
April 3-5 – Workshop: Spectral/Timing Properties of Accreting Objects – From X-ray Binaries to AGN, Madrid, Spain
April 3-5 – Conference: Quantum Fields, Gravity and Information – Joint Efforts and New Directions in Mathematical Physics, Nottingham, United Kingdom
April 3-5 – Target Conference: Probing Big Data for Answers, Groningen, The Netherlands
April 3-6 – Conference: From Stars to Life – Connecting our Understanding of Star Formation, Planet Formation, Astrochemistry and Astrobiology, Gainesville, Fla.
April 5 – Meeting: Human Spaceflight: Public and Stakeholder Opinions Panel, Washington, D.C.
April 5 – Lecture: GRAIL Explores the Moon’s Interior, Houston, Texas
April 5 – Colloquium: Latest News from the Universe – Cosmology, Dark Matter, Galaxies, Astrophysics and Particle Physics, Turin, Italy
April 5-7 – Workshop: Gravitational Wave Tests of Alternative Theories of Gravity in the Advanced Detector Era, Bozeman, Mont.
April 6 – Educators Workshop: The Challenge of Discovery
April 7-8 – Space Generation Fusion Forum 2013, Colorado Springs, Colo.
April 7-10 – IoP Nuclear Physics Group Conference, York, United Kingdom
April 7-11 – 13th Meeting of the High Energy Astrophysics Division, Monterey, Calif.
April 7-12 – European Geosciences Union General Assembly, Vienna, Austria
April 8-10 – 9th Chandra/CIAO Workshop, Cambridge, Mass.
April 8-10 – 7th European Workshop on Thermal Protection Systems and Hot Structures, Noordwijk, The Netherlands
April 8-10 – First International Conference on Remote Sensing and Geoinformation of Environment, Paphos, Cyprus
April 8-11 - 29th National Space Symposium, Colorado Springs, Colo.
April 08-11 - 2013 STScI Calibration Workshop: Enhancing the Past, Maximizing the Present, Preparing for the Future, Baltimore, Md.
April 8-11 - StarBench: A Workshop for the Benchmarking of Star Formation Codes, Exeter, United Kingdom
April 8-11 – 2013 International Workshop on Baryon and Lepton Number Violation: From the Cosmos to the LHC, Heidelberg, Germany
April 8-11 – 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials and Co-located Conferences, Boston, Mass.
April 8-12 – Workshop: Transformational Science with ALMA – From Dust to Rocks to Planets Formation and Evolution of Planetary Systems, Waikoloa, Hawaii
April 8-12 – AGU Chapman Conference on the Causes and Consequences of the Extended Solar Minimum between Solar Cycles 23 and 24, Key Largo, Fla.
April 8-12 – Workshop: The Deaths of Stars and the Lives of Galaxies, Santiago, Chile
April 8-12 – 9th IAA Symposium on Small Satellites for Earth Observation, Berlin, Germany
April 8-12 – Heavy Ion Accelerator Symposium on Fundamental and Applied Science, Canberra, Australia
April 9-10 – Third International Workshop on Lunar Superconductor Applications, Cocoa Beach, Fla.
April 10 – Lecture: Mars One, London, United Kingdom
April 10-11 – Conference: Military Space, London, United Kingdom
April 10-12 – Second CEAS Specialist Conference on Guidance, Navigation and Control, Delft, The Netherlands
April 10-12 – Workshop: Open Problems and Future Directions in Heavy Element Nucleosynthesis, Debrecen, Hungary
April 10-12 – Workshop: Low Radioactivity Techniques 2013, Assergi, Italy
April 11 – Lecture: Regenerative Fuel Cells, Energy Storage Systems for Space Applications, Pasadena, Calif.
April 11 – LunarCubes Briefing #2, Coco Beach, Fla.
April 11-12 – Conference: Space Exploration and Human Imagination – Space Futures, Houston, Texas
April 11-12 – Stellar Stoichiometry Workshop, Glendale, Ariz.
April 11-13 – Space Access ’13 Conference, Phoenix, Ariz.
April 12 – Lecture: Regenerative Fuel Cells, Energy Storage Systems for Space Applications, Pasadena, Calif.
April 12 – Meeting: The Physics of Flares in the Lower Solar Atmosphere, London, United Kingdom
April 12 – Lecture: Lunar Crustal Magnetism – Origins and Influence on Space Weathering, Houston, Texas
April 12 – Lecture: High Time Resolution Optical Astrophysics, London, United Kingdom
April 12 – Lecture: Untwinkling the Stars – Laser Guide Star Adaptive Optics at Lick Observatory, Los Altos Hills, Calif.
April 13 – Educator Workshop: How to Think Like a NASA Scientist, Pasadena, Calif.
April 13-16 – American Physical Society Meeting, Denver, Colo.
April 14-18 – Huntsville in Nashville: The Seventh Huntsville Gamma-Ray Burst Symposium, Nashville, Tenn.
April 14-18 – Workshop: Probing the Standard Model and New Physics at Low and High Energies, Portoroz, Slovenia
April 14-19 – Conference: Coastal Processes and Environments Under Sea-Level Rise and Changing Climate – Science to Inform Management, Galveston, Texas
April 15-16 – Meeting: A Certification Scheme for the EO Industry, Frascait, Italy
April 15-17 – STSI Workshop: Cluster Lensing – Peering into Past, Planning for the Future, Baltimore, Md.
April 15-17 – SMOS & Aquarius Science Workshop, Ifremer, Brest, France
April 15-18 – Conference: Light Pollution Theory – Modelling and Measurements, Smolenice, Slovak Republic
April 15-18 – SPIE Optics + Optoelectronics Conference, Prague, Czech Republic
April 15-18 – VESF School on Gravitational Waves, Neutrinos and Multiwavelenght Observations: The New Frontier of Astronomy, Rome, Italy
April 15-19 – 2013 IAA Planetary Defense Conference, Flagstaff, Ariz.
April 15-19 – 12th Annual International Astrophysics Conference: Outstanding Problems in Heliosphysics – From Coronal Heating to the Edge of the Heliosphere, Myrtle Beach, S.C.
April 15-19 – International Young Astronomer School on Exploiting the Herschel and Planck Data, Meudon, France
April 15-19 – Grav13 Conference, Cordoba, Argentina
April 16 – Lecture: Measuring Habitability on Mars with the Curiosity Rover, Washington, D.C.
April 16-19 – Space Weather Workshop, Boulder, Colo.
April 17-19 – Fifth UK Astrobiology Conference: Molecules and Life in Extremes, Edinburgh, Scotland
April 17-19 – 4th IAA International Conference on Space Technologies at Present Time and in Future, Dnepropetrovsk, Ukraine
April 18-19 – Meeting: Massive Black Holes in Galaxies, Brighton, United Kingdom
April 18-20 – Sixth International Meeting of Astronomy and Astronautics, Rio de Janeiro, Brazil
April 19-20 – Seventh Gulf Coast Gravity Meeting, Oxford, Miss.
April 20-21 – International Space Apps Challenge
April 22-24 – Workshop: The Evolution and Constitution of Mercury’s Interior, Chicago, Ill.
April 22-24 – 9th Chandra/CIAO Workshop, Cambridge, Mass.
April 22-24 – Meeting: Human Spaceflight, Washington, D.C.
April 22-24 – 10th INTEGRAL/BART Workshop, Karlovy Vary, Czech Republic
April 22-24 – 3rd SPARC/Dynamical Variability Workshop, Reading, United Kingdom
April 22-25 – 6th European Conference on Space Debris, Darmstadt, Germany
April 22-26 – Jets and Shocks in the Universe: The 2nd PANDA Symposium on Multi-Messenger Astronomy, Xi’an, China
April 22-26 – Conference: The Modern Radio Universe 2013, Bonn, Germany
April 22-27 – 20th Young Scientists’ Conference on Astronomy and Space Physics, Kyiv, Ukraine
April 23-25 – Conference: Integrated Communications Navigation and Surveillance 2013, Herndon, Va.
April 24 – Workshop: From Outer Space to Mining, Cleveland, United Kingdom
April 24-26 – First SPARC/Stratospheric Network for the Assessment of Predictability Workshop, Reading, United Kingdom
April 25-26 – Meeting: Understanding and Monitoring Abrupt Climate Change 6442and its Impacts, Boulder, Colo.
April 25 – Lecture: Project Orion Nuclear Propulsion, London, United Kingdom
April 25-29 – Balkan Workshop: Beyond the Standard Models – Ten Years of the SEENET-MTP Network, Vrnjacka Banja, Serbia
April 29-May 1 – SPARC Reanalysis/analysis Intercomparison Project Planning Meeting, Exeter, United Kingdom
April 29-May 2 – Symposium: Habitable Worlds Across Time and Space, Baltimore, Md.
April 29-May 3 – Conference: Brown Dwarfs Come of Age, Fuerteventura, Canary Islands, Spain
April 29-May 3 – Conference: Black Holes, Jets and Outflows, Kathmandu, Nepal
April 29-May 08 – Cargese School 2013: Cosmic Accelerators, Cargese, Corsica
April 30 – IET Seminar on Solar Storms, London, United Kingdom