dr-becky 2 years ago
astrophysicist #Answers!

Why are there TWO High Tides per Day?

We all learn that the tides are caused by the Moon pulling on the Earth's oceans. So how come there's two high tides per day but we only have one Moon?

00:00 | Introduction

00:35 | One Moon, Two High Tides?

00:54 | Is it the Sun?

01:07 | Spring Tides

01:16 | Neap Tides

01:42 | The Earth-Moon Barycentre (centre of mass)

02:45 | Planetary wobbles

03:09 | Detecting exoplanets with star wobbles

03:20 | Wobbles create centrifugal force

04:29 | A lunar day of 24h50m

04:56 |  Brilliant

06:06 | Bloopers

Dr Becky Smethurst
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