À propos de ce cours

100 % en ligne

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Dates limites flexibles

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Approx. 54 heures pour terminer

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


Sous-titres : Anglais

100 % en ligne

Commencez dès maintenant et apprenez aux horaires qui vous conviennent.

Dates limites flexibles

Réinitialisez les dates limites selon votre disponibilité.

Approx. 54 heures pour terminer

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


Sous-titres : Anglais

Programme du cours : ce que vous apprendrez dans ce cours

28 minutes pour terminer


This short lecture introduces Professor Spergel, the basic outline of the course and its goals....
1 vidéo (Total 8 min), 2 lectures
1 vidéo
Welcome8 min
2 lectures
Course Overview10 min
Keep in Touch10 min
1 heure pour terminer

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....
3 vidéos (Total 36 min)
3 vidéos
Planets, Stars and the Milky Way11 min
From Galaxies to the Big Bang7 min
29 minutes pour terminer

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....
3 vidéos (Total 29 min)
3 vidéos
The Main Components10 min
How Do We Know it When We See it?7 min
1 heure pour terminer

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....
3 vidéos (Total 43 min)
3 vidéos
Energy Conservation and the Temperature of Planets11 min
Habitable Zone and Goldilocks16 min
1 heure pour terminer

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....
3 vidéos (Total 44 min)
3 vidéos
Feedbacks and Stability10 min
Snowball Earth17 min
1 heure pour terminer

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....
3 vidéos (Total 33 min)
3 vidéos
Kinetic Theory11 min
Hydrostatic Equilibrium12 min
1 heure pour terminer

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....
4 vidéos (Total 71 min)
4 vidéos
Mercury13 min
Magnetic Fields12 min
Venus17 min
Interview with Sean Solomon27 min
1 heure pour terminer


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....
3 vidéos (Total 41 min)
3 vidéos
Basics14 min
Mars and Water13 min
Our Past and Our Future?12 min
3 heures pour terminer

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....
3 vidéos (Total 52 min), 1 quiz
3 vidéos
Basics11 min
Craters8 min
Tides31 min
1 heure pour terminer

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....
3 vidéos (Total 46 min)
3 vidéos
Solar System Moons14 min
Saturn16 min
1 heure pour terminer

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....
5 vidéos (Total 87 min)
5 vidéos
Kepler’s Laws and Search for Extrasolar Planets Part II11 min
Kepler’s Laws and Search for Extrasolar Planets Part III15 min
Interview with Debra Fischer30 min
Interview with Freeman Dyson21 min
1 heure pour terminer

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....
3 vidéos (Total 45 min)
3 vidéos
Extrasolar Transits 19 min
Exoplanet Zoo 13 min
66 avisChevron Right

Meilleurs avis

par 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

par 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.



David Spergel

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

À propos de Université de Princeton

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....

Foire Aux Questions

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