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Animation Techniques in Astronomy aka a Smorgasbord of Data Management, Coding Hacks and Stuff Ive Been Working on in Houdini/Blender/VR in the context of the larger problems we face in Astronomy Who Are you? Jill P. Naiman NSF+ITC

  1. Animation Techniques in Astronomy … aka a Smorgasbord of Data Management, Coding Hacks and Stuff I’ve Been Working on in Houdini/Blender/VR in the context of the larger problems we face in Astronomy

  2. Who Are you? Jill P. Naiman NSF+ITC Postdoctoral Fellow at the Harvard-Smithsonian CfA, V.S. at NCSA Ph.D. from UCSC, BS from UCLA Donna Cox’s Group & Alyssa Goodman Matt Turk & Glue Team

  3. Terms Visualization = Animations and/or pictures (in 2D and 3D) analysis/analysis plots = images with axis that have numbers

  4. Some Structural Problems Facing Astronomy New high resolution/cadence instruments = lots more data New instruments … an example = more data Things further away from us are moving away from us more quickly moving away from us How fast galaxy is Hubble’s Law The universe is expanding in every direction How far away a specific galaxy is

  5. Some Structural Problems Facing Astronomy New high resolution/cadence instruments = lots more data New instruments … an example = more data Things further away from us are moving away from us more quickly moving away from us How fast galaxy is Hubble’s Law The universe is expanding in every direction If you run time backwards space is smooshed together = The Big Bang How far away a specific galaxy is This was a Big Discovery!

  6. Some Structural Problems Facing Astronomy New high resolution/cadence instruments = lots more data New instruments … an example = more data Models that require DE for acceleration Better telescopes moving away from us = How fast galaxy is New data which shows expansion is accelerating = discovery of Dark Energy But what is Dark Energy? How far away a specific galaxy is

  7. Some Structural Problems Facing Astronomy New high resolution/cadence instruments = lots more data New instruments … an example = more data Large Synoptic Survey Telescope (LSST): searching for answers about Dark Energy (and Dark Matter, and on and on!) GIGANTIC camera with 3.2 gigapixels (3,200,000,000 pixels)

  8. Some Structural Problems Facing Astronomy New high resolution/cadence instruments = lots more data New instruments … an example = more data Large Synoptic Survey Telescope (LSST): searching for answers about Dark Energy (and Dark Matter, and on and on!) 200PB/decade expected (200,000 Jill’s laptop’s storage) How are we possibly sift through all this data for the interesting bits?? GIGANTIC camera with 3.2 gigapixels (3,200,000,000 pixels)

  9. Some Structural Problems Facing Astronomy New high resolution/cadence instruments = lots more data New instruments … an example = more data LSST: 200PB/decade expected (200,000 Jill’s laptop’s storage) Sloan Digital Sky Survey (SDSS): ~120TB Dark Energy Survey (DES): ~200GB/night, ~PB in last decade. Square Kilometre Array (SKA): 1000 PB per year expected

  10. Some Structural Problems Facing Astronomy New instruments = more data Faster Computers = more (fake) data AREPO - http://wwwmpa.mpa-garching.mpg.de/~volker/arepo/

  11. Some Structural Problems Facing Astronomy New instruments = more data Faster Computers = more (fake) data AREPO - http://wwwmpa.mpa-garching.mpg.de/~volker/arepo/

  12. Some Structural Problems Facing Astronomy “Moore’s Law for Astronomy” How many little grids can we break New instruments up our simulation into? = more data Faster Computers = more (fake) data Again: How are we possibly sift through all this (fake) data for the interesting bits?

  13. Some Structural Problems Facing Astronomy New instruments = Scientific illiteracy more data ~1 in 4 think Sun goes around Earth ~1 in 2 think antibiotics kill viruses as well as bacteria Faster Computers ~1 in 4 think all radioactivity is = human-made more (fake) data Indicates a failure of scientific education/communication. NSF - http://www.nsf.gov/statistics/seind14/content/chapter-7/chapter-7.pdf

  14. Some Structural Problems Facing Astronomy New instruments = Scientific illiteracy more data Faster Computers = Scientific brain-drain more (fake) data

  15. Some Structural Problems Facing Astronomy 7.1% Asian New instruments 1.2% Latinx = Scientific illiteracy 1% Black 0% Native more data 90.7% White Faster Computers = Scientific brain-drain more (fake) data Other access issues: socioeconomic status, gender, etc

  16. Some Structural Problems Facing Astronomy 7.1% Asian New instruments 1.2% Latinx = Scientific illiteracy 1% Black 0% Native more data 90.7% White Faster Computers = Scientific brain-drain more (fake) data How can we tap into the greater pool of great scientific minds?

  17. Some Structural Problems Facing Astronomy New instruments = Scientific illiteracy more data Faster Computers = Scientific brain-drain more (fake) data

  18. Some Structural Problems Facing Astronomy Neural Networks Outreach Education Reinforcement Learning New instruments = Scientific illiteracy more data Animations (Visualizations) “on the fly” Access Astrostatistics Poverty Reduction analysis Faster Computers = Scientific brain-drain more (fake) data Computer Science Parallel Effective Community computing/analysis Mentoring Building

  19. Some Structural Problems Facing Astronomy Neural Networks Outreach Education Reinforcement Learning New instruments = Scientific illiteracy more data Animations (Visualizations) “on the fly” Access Astrostatistics Poverty Reduction analysis Faster Computers = Scientific brain-drain more (fake) data Computer Science Parallel Effective Community computing/analysis Mentoring Building

  20. Some Structural Problems Facing Astronomy Scientific illiteracy Animations (Visualizations) Faster Computers = Scientific brain-drain more (fake) data

  21. What I Do* * NOT made with Blender/Houdini… yet

  22. What I Do ✦ Super computer simulations of how galaxies form in our Universe

  23. What I Do ✦ Super computer simulations of how galaxies form in our Universe ✦ Track motions of both gas and dark matter (makes up 85% of the Universe, but we can’t see it)

  24. What I Do ✦ Super computer simulations of how galaxies form in our Universe ✦ Track motions of both gas and dark matter (makes up 85% of the Universe, but we can’t see it) ✦ Includes other physics: how stars form, effects of magnetic fields, how elements are created and released into the Universe, etc ✦ Simulations get “big”: 100 billion particles/cells to follow each with its own physics - run on ~90,000 cores for several months - “snapshot” files are around 15-25TB That’s a lot of polygons! How the HECK do we know what is going on in our data?

  25. Other Scientific Animation Codes: Vapor IDL $$$ Export format? VisIt Paraview User interface? Artistic Input?

  26. AstroBlend: An Astrophysical Animation Tool Isodensity Contours colored by temperature Isodensity Contours Galaxy particle simulation colored by temperature, (colors = temperature) glowing based on physics

  27. AstroBlend: As A Frontend to YT From the yt website: “yt is a python package for analyzing and visualizing volumetric, multi- resolution data from astrophysical simulations, radio telescopes, and a burgeoning interdisciplinary community.” Temperature Simulation gas collapsing and forming two dense cores that will Density become some of the first stars in our Universe. Turk et al 2009

  28. AstroBlend: As A Frontend to YT From the yt website: “yt is a python package for analyzing and visualizing volumetric, multi- resolution data from astrophysical simulations, radio telescopes, and a burgeoning interdisciplinary community.” Temperature Used for both analysis and Density visualization Turk et al 2009

  29. AstroBlend: As A Frontend to YT Image Credit: Erik Rosolowsky & ALMA

  30. AstroBlend: As A Frontend to YT

  31. AstroBlend: As A Frontend to YT NeuroDome SubbaRao, SubbaRao & Fisher

  32. AstroBlend: As A Frontend to YT Pretty pictures but… what about 3D interactions with the data? Image Viewer One of 3D Viewer Blender’s Selection panels *dev version

  33. AstroBlend: As A Frontend to YT Pretty pictures but… what about 3D interactions with the data? *dev version

  34. AstroBlend: As A Frontend to YT With this library Blender can now “read” astrophysical data *dev version

  35. AstroBlend: As A Frontend to YT 3D data objects and analysis plots are put in physical context with each other *dev version

  36. AstroBlend: As A Frontend to YT Analysis plots are made to be interactive

  37. AstroBlend: As A Frontend to YT Can easily combine different data sets in physical space

  38. AstroBlend: Gratuitous Movies! ~4.6 billion particles

  39. AstroBlend: Gratuitous Movies! Made (nearly) entirely with Python in Blender

  40. AstroBlend: Gratuitous Movies! Can combine artistic models with observed astrophysical data Can place simulated data in context with observations and artistic models

  41. The Future… video from Glue team: http://www.glueviz.org/en/stable/

  42. The Future… bonus

  43. Other Astrophysicists working in Blender: Rhysy Taylor http://skysrv.pha.jhu.edu/~miguel/ visualization.html FRELLED - volume rendering Brian Kent http://www.rhysy.net/frelled.html http://www.cv.nrao.edu/~bkent/blender/index.html

  44. Beginning to work in Houdini

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