Sun

109 Earths would fit across the diameter of the sun!! Diameter: 1,400,000 km, 864,000 miles 4.5 light-seconds 1,300,000 Earths could fit inside!

Mass: 2 x 10 30 kg or 330,000 times Earth’s mass!! Density: 1.41 g/cm 3

What planet has this same composition?

Surface temp: 5800 K, 5500 o C, 11,000 o F

Trivia… ,[object Object],[object Object],[object Object]

The Sun’s Structure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A. The Core ,[object Object],[object Object]

B. Radiative Layer ,[object Object],[object Object],[object Object]

C. Convective Zone ,[object Object],[object Object],[object Object],[object Object]

The tops of convection cells can be seen near the sunspots. They are called granules , or granularity.

3 Atmosphere Layers ,[object Object],[object Object],[object Object],[object Object]

Actual color of photo- sphere … is slightly greenish.

B. The Chromosphere ,[object Object],[object Object],[object Object],[object Object]

C. The Corona ,[object Object],[object Object],[object Object]

Features on the Sun’s Surface ,[object Object],[object Object],[object Object],[object Object],[object Object]

Differential Rotation ,[object Object],[object Object],[object Object]

There’s still a lot we don’t know ,[object Object],[object Object],[object Object]

Prominences & Flares ,[object Object]

A loop prominence – lets us visualize the magnetic field.

Sun spots ,[object Object],[object Object],[object Object]

Umbra & Penumbra ,[object Object],[object Object]

Missions to the Sun ,[object Object],[object Object],[object Object]

SOHO ,[object Object],[object Object],[object Object]

Ulysses – designed to orbit over the sun’s poles & provide a perspective that we can’t get from earth. This is ESA’s logo.

Genesis Mission ,[object Object],[object Object],[object Object]

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