This story-based lesson presents information on the early investigation into solar and cosmic X-rays, as well as the scientists working in pursuit of X-ray detection and imaging, that set the stage for a program of space-based astronomy. The lesson is narrated by Dr. Herbert Friedman, and includes information on his work, as well as his childhood, home life, and interests while a college student.

In this activity, students use a piano keyboard to model spectral lines as musical chords. It is designed to aid student understanding of spectral analysis, what the patterns mean, how elements are involved, and how this relates to stars. Traditionally, spectral images are two dimensional, and related to text. This auditory activity allows students to "hear" differences in patterns of various elements (e.g., nickel or helium). This activity is part of the "What is Your Cosmic Connection to the Elements" information and activity booklet. The booklet includes photos, teachers notes and instructions, and a link to a color image pdf of visible light spectra that can be printed and used to do the activity. This activity requires a piano keyboard, color printout or construction paper and/or toothpicks (to mark spectral lines of elements).

The PlanetQuest Observing Cards are designed to give telescope operators and other interpreters a new way of explaining the night sky. Relating common observing objects to our search for exoplanets makes these spectacular sights more understandable. These cards are a great resource for use at observing night events, providing new stories to tell about commonly viewed celestial objects.

The H-R diagram is a scatter graph of stars, a plot of stellar absolute magnitude or luminosity versus temperature or stellar classification. It is an important astronomical tool for understanding how stars evolve over time. Stellar evolution cannot be studied by observing individual stars as most changes occur over millions and billions of years. Astrophysicists observe numerous stars at various stages in their evolutionary history to determine their changing properties and probable evolutionary tracks across the H-R diagram. In this activity, students plot both maxima and minima with corresponding stellar classifications for several variables, and then identify the type of variability: Cepheid, RR Lyrae, Mira or Semiregular. This activity includes background information, a teacher guide, a student activity, and accompanying worksheets. The American Association of Variable Star Observers (AAVSO) and The Chandra X-Ray mission have collaborated to develop this activity.

The 1935 edition published by R. T. Gunther was based on only three or four local manuscripts, and as such is defective in many places. Missing phrases, or mis-copies or mis-read phrases at times makes that text unintelligible.

This edition is based on the collation of a significant number of manuscripts (over 80, and eventually, it is hoped, all manuscript copies). What is now being published here is the text of the Prologue and of the first sixteen chapters (Version 1.1).

The edition is available in five PDF files:

Part I: Introduction contains the preface and introductory material, including manuscript information;

Part II: Critical Edition contains the Latin text and diagrams, the critical apparatus and a facing English translation;

Part III: Latin Text contains the Latin text and diagrams, without the apparatus criticus, but maintaining the line numbers of the critical edition;

Part IV: English Text contains the English text and diagrams, for those who are interested in consulting only the translation.

Appendix I: Catalogue of Stars contains information about the all the stars mentioned in the text.

Over time these texts will be updated and expanded, when the remaining manuscript copies are collated, and when the editing of further sections have been completed. However, it is not expected that the present version will change – the rest of the manuscripts will expand the apparatus criticus but are unlikely to modify the text itself.

The editor is interested in the receiving comments on the text, and further insights into its interpretation, from others. He is willing to incorporate such additions into future versions for the benefit of others who would consult this edition in the future. Comments can be sent to thomson@chass.utoronto.ca.

Permission is given for scholars to print out (and bind) any or all of these texts for non-commercial uses: research, study, criticism and citation. Commercial reproduction of all or part of the texts is not permitted without the prior consent of the copyright owner.

This fact card discusses the shape of space and how light is affected by the amount of dark matter and energy in the universe. MAP's microwave detection gives us enormous insight into the creation of this matter and energy. Note: this resource was published prior to the mission name change from MAP to WMAP (Wilkinson Microwave Anisotropy Probe) to honor Dr. Wilkinson.

In this hands-on activity, students learn about the different realms of the Universe and explore their sizes and relative scales. They will be guided through a process that uncovers the immense sizes of the Sun, Solar System, Solar Neighborhood, Milky Way, Local Group, Supercluster, and the observable Universe. The full version of this activity involves students doing simple math computations, however it can also be done without the math. There are some inexpensive materials involved, as well as a powerpoint presentation. It is intended for grades 8-12, but can be adapted down for lower grade levels.

This book presents 49 space-related math problems published weekly on the SpaceMath@NASA site during the 2011-2012 academic year. The problems utilize information, imagery, and data from various NASA spacecraft missions that span a variety of math skills in pre-algebra and algebra.

This activity introduces the electromagnetic spectrum. A riddle is proposed and users stroll through an imaginary amusement park to identify the object being described. During the journey, they discover the different types of electromagnetic energy and learn about telescopes that see the universe in these different parts of the spectrum.

In 16.89 / ESD.352 the students will first be asked to understand the key challenges in designing ground and space telescopes, the stakeholder structure and value flows, and the particular pros and cons of the proposed project. The first half of the class will concentrate on performing a thorough architectural analysis of the key astrophysical, engineering, human, budgetary and broader policy issues that are involved in this decision. This will require the students to carry out a qualitative and quantitative conceptual study during the first half of the semester and recommend a small set of promising architectures for further study at the Preliminary Design Review (PDR).
Both lunar surface telescopes as well as orbital locations should be considered.
The second half of the class will then pick 1-2 of the top-rated architectures for a lunar telescope facility and develop the concept in more detail and present the detailed design at the Critical Design Review (CDR). This should not only sketch out the science program, telescope architecture and design, but also the stakeholder relationships, a rough estimate of budget and timeline, and also clarify the role that human explorers could or should play during both deployment and servicing/operations of such a facility (if any).

In this activity, students use multiwavelength images of stars in different stages of evolution to investigate how the initial masses of the protostars determines their evolutionary paths. Images include stellar nurseries, protostars, supernova remnants, planetary nebulae, white dwarfs, neutron stars, pulsars and black holes. The activity includes a teacher guide with background information, a card set of 24 images, student task description and worksheets, online tutorials, and a Web quest version. Suggestions for using the activity in the classroom as well as related URLs are included in the Web-based teacher guide.

In this activity, students are reminded that the Universe is made up of elements and that the heavier elements are created inside of a star, as they learned in the "Elements and You" activity. They are introduced to the life cycle of a star and to the way in which a star's mass affects its process of fusion and eventual death. Students discuss the physical concept of equilibrium as a balancing of forces and observe an experiment to demonstrate what happens to a soda can when the interior and exterior forces are not in equilibrium. An analogy is made between this experiment and core collapse in stars, to show the importance of maintaining equilibrium in stars. Finally, students participate in an activity which demonstrates how mass is ejected from a collapsed star in a supernova explosion, thereby dispersing heavier elements throughout the Universe. This activity is part of a series that has been designed specifically for use with Girl Scouts, but the activities can be used in other settings. Most of the materials are inexpensive or easily found. It is recommended that a leader with astronomy knowledge lead the activities, or at least be available to answer questions, whenever possible.

This toolkit includes PowerPoints and scripts, videos and accompanying activities and handouts about supernovae. Following are specific items in the kit: Supernova in the Lives of Stars PowerPoint and Script; Let's Make a Supernova (participants imagine themselves inside a large star at the end of its life, just as it is about to go supernova); Nuclear Fusion (a simple and engaging activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model); Supernova Star Maps (allow visitors to experience finding stars in the night sky that will eventually go supernova); A Universe Without Supernovae (an active game to illustrate the value of supernovae in the universe); and Lives of Stars (an activity and handout about the lifecycle of stars and when supernovae happen.)

This manual provides an overview of how telescopes have changed our understanding of the universe and contains simple demonstrations to use at star parties to get across basic ideas of optics. This manual will also help explain why the images that folks see at the eyepiece of a telescope at an outreach star party is so different from images published in magazines. The manual was produced to accompany an outreach toolkit developed for the NASA Night Sky Network. The toolkit is no longer being manufactured, but the activities are available through the manual, which can be freely downloaded.

NASA scientist, Neil Gehrels, serves as your guide to this online lesson on gamma ray tools, which focuses on advances in detector technologies since the 1980s that have enabled us to capture and image high-energy phenomena. Dr. Gehrels explains different methods for detecting and imaging high-energy particles, how they work, and the advantages and disadvantages of each, using examples and imagery from NASA missions.

These guides showcase education and public outreach resources from across more than 20 NASA astrophysics missions and programs. The twelve guides - one for each month - contain a science topic, an interpretive story, a sky object to view with finding charts, hands-on activities, and connections to NASA science. The guides are modular, so that educators can use the portions that are the most useful for their audiences/events. Following is the theme for each month: January - Betelgeuse, February - Orion Nebula, March - Pleiades, April - Pollux; May - Hubble Deep Field, June - Hercules Cluster, July - Ring Nebula & Veil Nebula, August - The Search for Habitable Worlds, September - Milky Way Galaxy, October - Upsilon Andromedae, November - Andromeda Galaxy, and December - Crab Nebula.

Do the laws of physics and mathematics apply to everything in the Universe? Janna Levin explains astrophysics. Created by Big History Project.

This activity includes twelve monthly star charts to identify the stars that are visible in the night sky and that are known to have planets around them. The star maps can be used to find constellations and identify stars with extrasolar planets. (Northern Hemisphere only, naked eye)