課程信息
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271 個評分
66 個審閱
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完成時間(小時)

完成時間大約為55 小時

建議:20 hours of videos and peer assessments...
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英語(English)

字幕:英語(English)
100% 在線

100% 在線

立即開始,按照自己的計劃學習。
可靈活調整截止日期

可靈活調整截止日期

根據您的日程表重置截止日期。
完成時間(小時)

完成時間大約為55 小時

建議:20 hours of videos and peer assessments...
可選語言

英語(English)

字幕:英語(English)

教學大綱 - 您將從這門課程中學到什麼

1
完成時間(小時)
完成時間為 28 分鐘

Introduction

This short lecture introduces Professor Spergel, the basic outline of the course and its goals....
Reading
1 個視頻 (總計 8 分鐘), 2 個閱讀材料
Video1 個視頻
Welcome8分鐘
Reading2 個閱讀材料
Course Overview10分鐘
Keep in Touch10分鐘
完成時間(小時)
完成時間為 1 小時

The Universe is Big!

One of the most striking features of the universe is its enormous size. The lecture discusses the structure of our Solar System, the new dwarf planets, and the distance to the nearest stars. The lecture then moves outwards to the scales of our galaxy and the visible universe....
Reading
3 個視頻 (總計 36 分鐘)
Video3 個視頻
Planets, Stars and the Milky Way11分鐘
From Galaxies to the Big Bang7分鐘
完成時間(小時)
完成時間為 29 分鐘

What is Life?

This lecture introduces different approaches to defining life, a necessary step if we are going to search for life. We then introduce the basic building blocks of biochemistry. One potential way of detecting life is through its byproducts like Methane. We discuss efforts to discuss life on Mars....
Reading
3 個視頻 (總計 29 分鐘)
Video3 個視頻
Introduction11分鐘
The Main Components10分鐘
How Do We Know it When We See it?7分鐘
2
完成時間(小時)
完成時間為 1 小時

Why is Mercury Hot?

This lecture uses energy balance to determine the effective temperature of planets. The lecture introduces the idea of temperature, black body spectrum and luminosity. We then calculate the location of the habitable zone, the range of distances where planets are likely to have liquid water....
Reading
3 個視頻 (總計 43 分鐘)
Video3 個視頻
Energy Conservation and the Temperature of Planets11分鐘
Habitable Zone and Goldilocks16分鐘
完成時間(小時)
完成時間為 1 小時

Snowball Earth

Planet temperatures depend on the albedo of the planet (its reflectivity) and the transparency of its atmosphere. This lecture introduces the basic physics behind global warming, discusses how non-linear feedbacks can exacerbate its effects, and describes how variations in the Earth’s albedo (mostly due to snow) can produce “Snowball Earth” episodes, extended epochs during which the Earth was mostly covered with ice....
Reading
3 個視頻 (總計 44 分鐘)
Video3 個視頻
Feedbacks and Stability10分鐘
Snowball Earth17分鐘
完成時間(小時)
完成時間為 1 小時

Planetary Atmospheres

This lecture begins by introducing the basic physics of gases, liquid and solids. The lecture then describes how the balance between gas pressure and gravity shapes the structure of planetary atmospheres....
Reading
3 個視頻 (總計 33 分鐘)
Video3 個視頻
Kinetic Theory11分鐘
Hydrostatic Equilibrium12分鐘
3
完成時間(小時)
完成時間為 1 小時

Mercury and Venus

This lecture discusses some of the remarkable properties of the two innermost planets, Mercury and Venus. We discuss how Mercury, a very hot planet, can have ice at its poles. We describe its surprisingly strong magnetic field. We discuss the structure of Venus’s atmosphere and how a “runaway greenhouse effect” made its surface uninhabitable....
Reading
4 個視頻 (總計 71 分鐘)
Video4 個視頻
Mercury13分鐘
Magnetic Fields12分鐘
Venus17分鐘
Interview with Sean Solomon27分鐘
完成時間(小時)
完成時間為 1 小時

Mars

Mars may be the other planet in the Solar System that hosts life. This lecture introduces the basic properties of Mars, Mars’ atmosphere and its seasons. We discuss Martian exploration, the search for water and methane on Mars and potential signature of life. Seasons....
Reading
3 個視頻 (總計 41 分鐘)
Video3 個視頻
Basics14分鐘
Mars and Water13分鐘
Our Past and Our Future?12分鐘
完成時間(小時)
完成時間為 3 小時

The Moon

By studying the properties of the Moon, we learn not only about its history but about the formation history of the Earth. This lecture discusses the physics of craters and the tidal interactions between the Earth and the Moon. We then apply the physics of tides to see how it shapes the properties of planets around M stars....
Reading
3 個視頻 (總計 52 分鐘), 1 個測驗
Video3 個視頻
Basics11分鐘
Craters8分鐘
Tides31分鐘
4
完成時間(小時)
完成時間為 1 小時

Small Bodies of the Solar System

This lecture begins by discussing comets and asteroids, remnants of the formation of our Solar System. We discuss how collisions of comets and asteroids with Earth have shaped its history. The lecture then discusses the moons of Jupiter and Saturn—these moons have complex geologies and atmospheres. Some of the moons may be potentially habitable by life forms....
Reading
3 個視頻 (總計 46 分鐘)
Video3 個視頻
Solar System Moons14分鐘
Saturn16分鐘
完成時間(小時)
完成時間為 1 小時

Kepler’s Law and Search for Extrasolar Planets

This lecture shows how Kepler’s Law, the relation between a planet’s Period and the radius of its orbit, can be understood in terms of the physics of gravity. We then see how we can use observations of star’s motions (and Kepler’s Law) to detect extrasolar planets and determine their basic properties....
Reading
5 個視頻 (總計 87 分鐘)
Video5 個視頻
Kepler’s Laws and Search for Extrasolar Planets Part II11分鐘
Kepler’s Laws and Search for Extrasolar Planets Part III15分鐘
Interview with Debra Fischer30分鐘
Interview with Freeman Dyson21分鐘
完成時間(小時)
完成時間為 1 小時

Kepler and Transits

Transits have been an important event for astronomy for over 400 years. This lecture describes the transit of Venus and how it was used to measure the size of our Solar System. This lecture then discusses how NASA’s Kepler mission observes planetary transits and how its observations have shaped our understanding of the properties of extrasolar planetary systems....
Reading
3 個視頻 (總計 45 分鐘)
Video3 個視頻
Extrasolar Transits 19分鐘
Exoplanet Zoo 13分鐘

講師

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David Spergel

Charles Young Professor of Astronomy on the Class of 1897 Foundation and Chair
Department of Astrophysics

關於 Princeton University

Princeton University is a private research university located in Princeton, New Jersey, United States. It is one of the eight universities of the Ivy League, and one of the nine Colonial Colleges founded before the American Revolution....

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