Über diesen Kurs
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Ca. 54 Stunden zum Abschließen

Empfohlen: 20 hours of videos and peer assessments...

Englisch

Untertitel: Englisch

100 % online

Beginnen Sie sofort und lernen Sie in Ihrem eigenen Tempo.

Flexible Fristen

Setzen Sie Fristen gemäß Ihrem Zeitplan zurück.

Ca. 54 Stunden zum Abschließen

Empfohlen: 20 hours of videos and peer assessments...

Englisch

Untertitel: Englisch

Lehrplan - Was Sie in diesem Kurs lernen werden

Woche
1
28 Minuten zum Abschließen

Introduction

This short lecture introduces Professor Spergel, the basic outline of the course and its goals.

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1 Video (Gesamt 8 min), 2 Lektüren
1 Video
2 Lektüren
Course Overview10m
Keep in Touch10m
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 36 min)
3 Videos
Planets, Stars and the Milky Way11m
From Galaxies to the Big Bang7m
29 Minuten zum Abschließen

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.

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3 Videos (Gesamt 29 min)
3 Videos
The Main Components10m
How Do We Know it When We See it?7m
Woche
2
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 43 min)
3 Videos
Energy Conservation and the Temperature of Planets11m
Habitable Zone and Goldilocks16m
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 44 min)
3 Videos
Feedbacks and Stability10m
Snowball Earth17m
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 33 min)
3 Videos
Kinetic Theory11m
Hydrostatic Equilibrium12m
Woche
3
1 Stunde zum Abschließen

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.

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4 Videos (Gesamt 71 min)
4 Videos
Magnetic Fields12m
Venus17m
Interview with Sean Solomon27m
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 41 min)
3 Videos
Mars and Water13m
Our Past and Our Future?12m
3 Stunden zum Abschließen

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.

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3 Videos (Gesamt 52 min), 1 Quiz
3 Videos
Craters8m
Tides31m
Woche
4
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 46 min)
3 Videos
Solar System Moons14m
Saturn16m
1 Stunde zum Abschließen

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.

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5 Videos (Gesamt 87 min)
5 Videos
Kepler’s Laws and Search for Extrasolar Planets Part II11m
Kepler’s Laws and Search for Extrasolar Planets Part III15m
Interview with Debra Fischer30m
Interview with Freeman Dyson21m
1 Stunde zum Abschließen

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.

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3 Videos (Gesamt 45 min)
3 Videos
Extrasolar Transits 19m
Exoplanet Zoo 13m
4.8
66 BewertungenChevron Right

Top reviews from Imagining Other Earths

von REAug 31st 2015

This was a very interesting class taught in such a manner that an undergraduate student majoring in any area would find interesting and educational, their is very much to learn for anyone

von CNJan 26th 2016

The best course ever.! it really has the scientific detail that you do not find anywhere else in a clear simple and didactic way. The instructor is an amazing educator.

Dozent

Avatar

David Spergel

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

Über 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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