Astrophysicists Discuss Our First Encounters with Interstellar Objects

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Chapters & Sections (58)

0:12 Introduction to Dark Comets chapter 4
0:12 The Discovery of Seven Objects in the Solar System
0:31 Neil deGrasse Tyson's Standup Special and Introduction to Dark Comets
1:33 Expert on Dark Comets, Daryl Seligman
2:05 Interstellar Objects and the National Science Foundation Fellowship
3:38 Discovery of Interstellar Object chapter 4
3:38 Initial Excitement and Expectations
4:10 Pan-STARRS Telescope and Object Detection
4:44 Object's Potential Hazard and Importance of Detection
5:15 Discussion on Pan-STARRS' Original Purpose and Object's Hyperbolic Orbit
6:49 Comet vs Asteroid chapter 4
6:49 Why comets are not asteroids
7:20 Continuum between comets and asteroids
7:51 Sublimation of ice in comets
8:23 Formation and ejection of interstellar objects
9:55 Jupiter's Gravitational Influence chapter 3
9:55 Jupiter as a Proxy Sun
10:27 Other Star System Interactions
10:58 Object Classification and Observations
13:01 Non-Gravitational Accelerations in Asteroids chapter 4
13:01 Asteroid Fuzz and Non-Gravitational Accelerations
13:32 Solar Pressure and Radiation Pressure on Asteroids
14:06 Unusual Object Properties and Hypotheses
15:09 Recent Theory on am mua mua's Non-Gravitational Acceleration
16:12 Discussion on Volatile Materials chapter 4
16:12 Defining Volatiles and Ice Phases
17:13 Types of Volatile Materials in Space
18:14 Hypothesis on Water and Hydrogen Acceleration
19:16 Alternative Hypotheses for Object's Properties
19:47 Discussion on Solar Photons and Asteroids chapter 4
19:47 Potential for Increased Solar Photon Push on Asteroids
20:19 Detection of Interstellar Object and Future Observatory Capabilities
20:50 Sensitivity of New Observatory and Potential Discoveries
21:52 Alternative Explanations for Asteroid Movement, Including Alien Life
22:55 Discovery of Non-Gravitational Accelerations on Dark Comets chapter 4
22:55 Significance of Non-Gravitational Accelerations and Ruling Out Normal Comet Behavior
23:26 Hypothesis of Icy Material in Dark Comets and Non-Gravitational Accelerations
24:29 Insulating Shell Formation Around Icy Material and Prevention of Outgassing
25:00 Re-Release of Carbon and Incorrect Previous Hypothesis
26:01 Discussion on Comets and Water Delivery chapter 5
26:01 Einstein's MC cubed and Hypothesis Testing
26:33 Non-Gravitational Acceleration Detection
27:07 Fitting Trajectories and Non-Gravitational Forces
27:38 Numerical Computation of Accelerations
28:10 Dark Comets and Water Delivery to Earth
29:11 Hydrogen and Dium chapter 3
29:11 Defining Hydrogen and Dium
29:44 Stability of Dium
30:15 Hayabusa 2 Mission and Dark Comets
31:17 Comet Formation and Asteroids chapter 2
31:17 Measuring Outgassing and Dust
31:48 Albedo of Comets and Asteroids
32:19 Future of Interstellar Object Detection chapter 2
32:19 Potential for Dark Comets and New Discoveries
33:20 Data Collection and Analysis Challenges
35:25 The Limitations of Human Knowledge and the Importance of Exploration chapter 2
35:25 Recognizing the Limitations of Our Current Understanding
35:57 The Impact of New Technologies and Discoveries on Our Understanding

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