
Why Eclipses Don't Happen Every Month
Clip: Season 44 Episode 11 | 1m 47sVideo has Closed Captions
Why don't solar eclipses happen every month?
Why don't solar eclipses happen every month? After all, you only need three things to make a solar eclipse: the Sun, the Earth and the Moon.
Problems with Closed Captions? Closed Captioning Feedback
Problems with Closed Captions? Closed Captioning Feedback
National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.

Why Eclipses Don't Happen Every Month
Clip: Season 44 Episode 11 | 1m 47sVideo has Closed Captions
Why don't solar eclipses happen every month? After all, you only need three things to make a solar eclipse: the Sun, the Earth and the Moon.
Problems with Closed Captions? Closed Captioning Feedback
How to Watch NOVA
NOVA is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
Buy Now

NOVA Labs
NOVA Labs is a free digital platform that engages teens and lifelong learners in games and interactives that foster authentic scientific exploration. Participants take part in real-world investigations by visualizing, analyzing, and playing with the same data that scientists use.Providing Support for PBS.org
Learn Moreabout PBS online sponsorship7 Stellar Facts about Solar Eclipses
Clip: S44 Ep11 | 2m 32s | Discover surprising facts about solar eclipses. (2m 32s)
How an Eclipse Proved Einstein Right
Video has Closed Captions
Clip: S44 Ep11 | 1m 58s | The total solar eclipse of 1919 led Albert Einstein down the path toward stardom. (1m 58s)
Clip: S44 Ep11 | 3m 19s | With the US eclipse just over a week away, here’s how you can watch it safely. (3m 19s)
Video has Closed Captions
Preview: S44 Ep11 | 30s | The country’s first solar eclipse in 99 years will cast a light on the Sun’s secrets. (30s)
Video has Closed Captions
Preview: S44 Ep11 | 1m 37s | The country’s first solar eclipse in 99 years will cast a light on the Sun’s secrets. (1m 37s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipSupport for PBS provided by:
National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.