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Archive of 'Focus On' topics
Science
The Basics----
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Cosmic Questions----
Origin and Destiny of the Universe
Evolution of Known Structures
Growth of Massive Black Holes
Nature of Dark Matter
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Dark Energy
The Search for Answers----
X-Ray Telescopes
X-Ray Detectors
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Advanced Science
Advanced Fundamentals----
The Electromagnetic Spectrum
Lightcurves, Spectra, and Images
Multiwavelength Astronomy
X-Ray Astronomy
Gamma-Ray Astronomy
X-Ray Generation
Gamma-Ray Generation
Cosmic Objects----
Stars
The Sun
X-Ray Binary Systems
Supernovae
Supernova Remnants
Black Holes
White Dwarfs
Pulsars
Cataclysmic Variables
Cosmic Rays
Active Galaxies & Quasars
X-Ray Transients
Dark Matter
Diffuse Background
Gamma-Ray Bursts
Cosmological Questions----
Matter in Extreme Conditions
Development of Elements in the Universe
The Lumpy Universe
Nature of Dark Matter
Validation of Relativity
Superstrings
The Search for Answers----
X-Ray Telescopes
X-Ray Detectors
Gamma-Ray Telescopes and Detectors
Spectral Analysis
Timing Analysis
Greater Collection Area
Higher Resolution
Exploring New Wavelengths
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Multimedia Theater----
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InterActivities-----
You be the Astrophysicist
Satellite Showcase----
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Satellite Showcase Archive
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Focus On...
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Satellites and Data
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Teachers' Corner
Lesson Plans----
What's the Frequency, Roy G. Biv?
How Big is That Star?
Detective Digit and the Slap Happy Computer Caper
Lotto or Life: What Are the Chances?
Get The Picture!
Time That Period!
Stars and Slopes
Spectroscopy of Supernova Remnants
Supernova Chemistry!
How Far... How Powerful
Posters and Activities Booklets----
Life Cycles of Stars
The Anatomy of Black Holes
Gamma Ray Bursts
The Hidden Lives of Galaxies
What is Your Cosmic Connection to the Elements?
Other Educational Materials----
Got Calcium? Lithograph
Further Information----
Adopt an Astronomer
NASA Education Initiatives and Opportunities
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Listed by topic, in alphabetical order----
Topics A-G
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Ask A High Energy Astronomer
Index of "Ask a High Energy Astronomer" answers, sorted by topic----
Note: each topic contains multiple questions and answers. To submit a question, please go to the appropriate topic page
Astrobiology
Astronomy as a Profession
Binary Star Systems
Black Holes
Cosmic Rays
Cosmology
Dark Matter
Earth and Moon
Gamma-Ray Bursts
General Astronomy and Astrophysics
Milky Way and Other Galaxies
Neutron Stars/Pulsars
Night Sky
Physics of Stars
Quasars and Active Galaxies
Relativity
Satellites and Space Technology
Solar System
Space Travel and Exploration
Supernovae and their Remnants
X-rays and Gamma-rays
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