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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
Telescopes

Free Online

Telescopes Courses and Certifications

Explore telescope technology, from ground-based arrays to space observatories like James Webb, while understanding optical design and astronomical instrumentation. Learn through expert-led content on YouTube, Coursera, and Study.com, covering adaptive optics, radio telescopes, and future lunar observatories for cosmic discovery.

68 courses

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DSST Astronomy: Study Guide & Test Prep

Comprehensive astronomy prep covering celestial bodies, star life cycles, galaxies, and the universe. Includes video lessons, quizzes, and practice tests for effective DSST exam preparation.
- Study.com
- 34 hours
- On-Demand
- Paid Course
Kyoto-U OCW - Unofficial
京大3.8mせいめい望遠鏡 - 日本初の分割望遠鏡に迫る


日本初の分割望遠鏡「せいめい」の仕組みと技術を探求。星空観測から望遠鏡の構造、鏡面加工技術まで、最先端の天文観測システムについて詳しく解説。
- YouTube
- 55 minutes
- On-Demand
- Free Video
Kyoto-U OCW - Unofficial
京大3.8mせいめい望遠鏡の鏡と鏡面加工 - チャプター4

探索する望遠鏡の鏡と鏡面加工技術について、京大せいめい望遠鏡を例に解説。分割鏡の特徴や製作過程から最新の天体観測技術まで詳しく学べる。
- YouTube
- 15 minutes
- On-Demand
- Free Video
Kyoto-U OCW - Unofficial
京大3.8mせいめい望遠鏡 - 日本初の分割望遠鏡 - チャプター1：星と望遠鏡


Discover the fundamentals of stars and telescopes through an exploration of Kyoto University's groundbreaking 3.8m Seimei telescope, Japan's first segmented telescope, presented by Associate Professor Kurita.
- YouTube
- 14 minutes
- On-Demand
- Free Video
Understanding the Universe: An Introduction to Astronomy, 2nd Edition
364 ratings at The Great Courses Plus

Get a comprehensive overview of the grandest of all subjects-the universe-in this brilliant and fascinating course taught by one of America's foremost astronomers.
- The Great Courses Plus
- 2 days 2 hours 1 minute
- On-Demand
- Free Trial Available
New Jersey Astronomical Association
Aerospace Engineering at NASA: James Webb and Roman Space Telescopes
2 reviews

Explore NASA engineer Elaine Stewart's work on the James Webb Space Telescope and learn about the upcoming Roman Space Telescope launch in 2027.
- YouTube
- 50 minutes
- On-Demand
- Free Video
Our Night Sky
228 ratings at The Great Courses Plus

Gain a superb introduction to the wonders of the night sky with this course-taught by an award-winning astronomer-that explores the fundamentals of stargazing.
- The Great Courses Plus
- 6 hours 28 minutes
- On-Demand
- Free Trial Available
Dublin Institute for Advanced Studies DIAS
Samhain to Space Telescopes - A Journey Through Irish Astronomy

Explore Ireland's astronomical journey from ancient Samhain timekeepers to modern space telescope observations, uncovering the rich history of stargazing on the island.
- YouTube
- 1 hour
- On-Demand
- Free Video
UW Astrobiology
Detecting Exo-Earth Candidates with Next Generation Direct Imaging Space Telescopes

Explore cutting-edge techniques for identifying Earth-like exoplanets using advanced space telescopes in direct imaging missions.
- YouTube
- 30 minutes
- On-Demand
- Free Video
KISSCaltech
Rocky Exoplanet Science with Ground-Based Extremely Large Telescopes

Explore rocky exoplanet science using ground-based Extremely Large Telescopes, covering transit spectroscopy, velocity shifts, and detection of water and oxygen.
- YouTube
- 12 minutes
- On-Demand
- Free Video
International Centre for Theoretical Sciences
Exploring the High-Redshift Universe with SKA and Next-Generation Radio Telescopes

Explore how the Square Kilometre Array (SKA) will revolutionize radio astronomy, focusing on cosmology and continuum science through collaborative research strategies and next-generation observation techniques.
- YouTube
- 28 minutes
- On-Demand
- Free Video
ICTP-SAIFR
Chasing Serendipity - Tackling Transient Sources with Neutrino Telescopes

Discover how neutrino telescopes detect and analyze transient astrophysical sources through serendipitous observations and advanced detection techniques.
- YouTube
- 44 minutes
- On-Demand
- Free Video
ICTP-SAIFR
Stereoscopic Analysis of the Crab Nebula with Imaging Atmospheric Cherenkov Telescopes

Explore stereoscopic analysis techniques for studying the Crab Nebula using Imaging Atmospheric Cherenkov Telescopes in this specialized astroparticle physics presentation.
- YouTube
- 1 hour 11 minutes
- On-Demand
- Free Video
ICTP-SAIFR
Introduction to Cherenkov Telescopes - Lecture 1

Discover the fundamentals of Cherenkov telescopes and their role in detecting high-energy cosmic particles through atmospheric light phenomena.
- YouTube
- 1 hour 43 minutes
- On-Demand
- Free Video
Inside Livermore Lab
Space Telescopes: Observing the X-ray Universe

Explore the universe through X-ray astronomy, discovering how space telescopes like XRISM observe extreme cosmic environments and reveal secrets of black holes and distant galaxies.
- YouTube
- 55 minutes
- On-Demand
- Free Video

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