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The Series Finale of Online Education: Coursera Acquires Udemy

$7.2 billion in combined revenue since 2020. $8 billion in lost market value. This merger marks the end of an era in online education.

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Subjects
Science
Astronomy

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Professor Paul Robinson
Introductory Astronomy - The H-R Diagram

Explore the Hertzsprung-Russell Diagram, a fundamental tool for analyzing stellar properties, and learn about spectral classes and white dwarfs in astronomy.
- YouTube
- 16 minutes
- On-Demand
- Free Video
Professor Paul Robinson
Introductory Astronomy - Magnitudes of Stars

Explore stellar brightness, comparing apparent and absolute magnitudes to understand the true luminosity of stars despite their varying distances from Earth.
- YouTube
- 17 minutes
- On-Demand
- Free Video
Professor Paul Robinson
Introductory Astronomy - Luminosity, Temperature, and Surface Area

Explore the interplay of luminosity, temperature, and surface area in astronomy, understanding key concepts like the Stefan-Boltzmann Law and HR Diagram.
- YouTube
- 16 minutes
- On-Demand
- Free Video
Professor Paul Robinson
Introductory Astronomy - Star Formation and the Lifetimes of Stars

Explore the fascinating process of star formation and discover how long stars live in their main hydrogen-fusing phase in this concise astronomy lecture.
- YouTube
- 18 minutes
- On-Demand
- Free Video
Professor Paul Robinson
Introductory Astronomy - Causes of the Seasons

Explore Earth's seasonal changes through an in-depth examination of astronomical factors, utilizing interactive simulations and expert insights to enhance understanding of this natural phenomenon.
- YouTube
- 16 minutes
- On-Demand
- Free Video
Professor Paul Robinson
Introductory Astronomy: Star Motions at Different Latitudes

Explore celestial movements across Earth's latitudes using Stellarium, a free sky simulator, to understand how star motions appear differently from various global positions.
- YouTube
- 20 minutes
- On-Demand
- Free Video
World Science Festival
Standing on the Shoulders of Giants - John Mather's Contributions to Astronomy

Nobel Laureate John Mather discusses his groundbreaking work on NASA's COBE mission and the James Webb Space Telescope, offering insights into the Big Bang and unprecedented views of the cosmos.
- YouTube
- 1 hour 4 minutes
- On-Demand
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MooMooMath and Science
Earth Science - Astronomy Fundamentals

Explore fundamental astronomy concepts including planetary systems, moon phases, eclipses, and seasonal changes through engaging videos and study guides.
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Super-Earths and Life
5 reviews

Learn about the Earth, life, and how we can search for life elsewhere in the universe.
- edX
- 15 weeks, 3-5 hours a week
- On-Demand
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LIGO and the Dawn of Gravitational Wave Astronomy
1 review

Explore the groundbreaking field of gravitational wave astronomy, from Einstein's theories to LIGO's revolutionary detections, unveiling the universe's hidden cosmic events.
- YouTube
- 1 hour 43 minutes
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Astronomy and Space for Children
3 reviews

Explore the wonders of space and astronomy through engaging, kid-friendly lessons on planets, stars, galaxies, and celestial phenomena.
- YouTube
- 3 hours 30 minutes
- On-Demand
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Hubble Space Telescope
Hearing the Light - Astronomy Data Sonification

Explore how sonification transforms astronomical data into sound, enhancing cosmic understanding and accessibility. Learn about Astronify tool and participate in an interactive game to identify exoplanets and stellar phenomena.
- YouTube
- 1 hour 29 minutes
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Professor Paul Robinson
Introductory Astronomy - Newton's Laws of Motion I and II

Explore Newton's 1st and 2nd laws of motion, covering constant velocity, forces, and free-body diagrams. Gain foundational knowledge for understanding celestial mechanics in astronomy.
- YouTube
- 19 minutes
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The Royal Institution
Trailblazing Women Astronomers - Breaking Barriers in Modern Astronomy

Explore the journeys and contributions of pioneering women astronomers, breaking barriers and reshaping the field. Gain insights into scientific discoveries, role models, and the ongoing fight for gender equality in astronomy.
- YouTube
- 57 minutes
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Spahn's Science Lectures
Earth Science - The Ancient Roots of Astronomy

Explore ancient astronomy's roots, from Greek geocentric models to Copernicus' revolutionary ideas, and how they shaped our understanding of the cosmos.
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