Science Technology Engineering Mathematics
- 1. Blake Bullock James Webb Space Telescope Campaign Lead Northrop Grumman Aerospace Systems Approved for Public Release by NASA, 25 May 2011, NGAS Case 11-0676
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- 3. Early Celestial Observers Stared Up at the Skies in Wonder SUN MOON EARTH htL xs s i
- 4. Invention of Observation Instruments Brought Space into Focus
- 5. Galileo: -Confirms sun-centered Universe -Jupiter has moons -Milky Way is composed of stars -All because he has best (only) astronomical telescope Most Powerful Telescope in the World: ~1620
- 6. Terrestrial Observatories Expanded Our Horizons
- 7. The Milky Way Scale: If the Sun were a small pebble: The nearest star? Orlando (approximately 100km) The Center of the galaxy? A trip to the moon
- 8. World’s Most Powerful Telescope: ~1920 • Hubble showed spiral nebulae were “island universes” • Showed the Universe is expanding. 100 inch Hooker telescope (Mt. Wilson, just north of Pasadena, CA)
- 9. Space-Based Observation has Yielded Unimaginable Results OGO HEAO Chandra GRO Hubble Hubble Deep Field
- 10. From Hubble to Webb
- 12. 3 million light years Milky Way Milky Way is a Member of the “Local Group”
- 13. One Among Many Superclusters in the Universe... 300 million light years Milky Way
- 15. WEBB: Our Knowledge of the Universe is About to Radically Expand... …Again Hubble Ultra Deep Field Hubble Earth Moon LaGrange Point 2 Simulation of what WEBB will see
- 17. A Sense of Time… 14 Billion Years Ago If the full expanse of time were crunched into 1 year, then Shakespeare wrote his plays ~ 1 second ago
- 18. 14 Billion Years Ago Overview of Scientific Cosmology • Time & Space began ~14 billion years ago in the big bang • The Universe has been expanding & cooling since then • Hot in the beginning: a sea of elementary particles • Out of this simple start emerged all of the complex structure we see today
- 19. From Hubble to Webb Hubble “Ultra Deep Field” is the deepest image of the universe ever taken in visible light Simulation of the same field with Webb shows many more objects in much greater detail Hubble Ultra Deep Field Simulated James Webb Field
- 20. Star Formation
- 24. Large primary mirror for increased sensitivity & detail Deployable to fit inside rocket fairing Passively cooled by sunshield to avoid limited lifetime of coolant Infrared sensitive: due to expansion of universe, light from oldest galaxies is redshifted, or stretched, from visible into the infrared Observe the earliest, faintest galaxies, beyond what Hubble can see Hubble Ultra Deep Field, pictured here, reveals some of the oldest galaxies ever seen, formed 13 billion years ago when the universe was 5% its present age. From Hubble to Webb CHALLENGE SOLUTIONS
- 26. Webb has Stunning Surface Accuracy
- 27. Measuring Webb’s Surface Accuracy Yields Optometry Breakthrough
Editor's Notes
- #3: http://kepler.nasa.gov/images/MilkyWayNoLabels_CarterRoberts935x593-full.jpg
- #4: For centuries the vastness of the night sky has prompted humansto ponder the big questionsWho are we? Why are we here?What is here?
- #5: Time has yielded technical innovations that have improved discovery and allowed mankind to view the heavens more clinically, yet with the same sense of wonder
- #7: With each step in observatory size & power, the field of Astrophysics has expanded.Our understanding of celestial bodies has progressively moved further and further and further outward. We’ve built very capable terrestrial instruments. We are here at one of them tonight. These have raised discovery to remarkable new levels revealing things that no one could have imaged
- #8: Look up and see this band of lightBut this is a look at the Milky Way from “above”
- #10: With the advent of access to space, the observational high ground has moved above the earth.Today space-based observatories float along in the heavens, peering outwards, looking ever further.Northrop Grumman has been committed to Human discovery of space fielding 3-4 (verifying number)? of the Nation’s great observatories.These, together with Hubble, have yielded absolutely stunning results that serve only to whet our appetitesfor more
- #15: Here is Our sun is one starBillions of stars in our GalaxyIf the Sun were the size of a grain of sand, our Galaxy would be the size of the Earthwhat one of those dots looks like up close – Hubble picture
- #16: But discovery informs further discovery.Dimmer, older light, which Blake will talk to you about in a few minutes, is accessible by • going out further, • building a larger, more sensitive telescope• that is specifically aimed to collect this older light.With JWST, which Scott will speak to you on in great detail, our collective understanding will travel back in time eons further than we could with previous systems.JWST will retrieve this data in a 100th of the time of Hubble.It is our privilege to support NASA and the Nation – for that matter – Humanity in the continued quest for knowledge with the next great space telescope, JWST
- #17: 1929: Hubble showed that all galaxies were seemingly moving away from us.The light of a galaxy that is moving away from us will be “redshifted”, or the wavelength gets longer
- #18: Age of the universe = ~14 billion yearsShakespeare ~1600, (400 years ago)
- #21: The Eagle Nebula in visible light (left) and infrared light (right)Because infrared light can penetrate clouds of dust, infrared telescopes allow us to see through dust to the stars and objects within