Space Science 2

7/28/2019 Space Science 2

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18-Apr-13

IESO

Space Science

Part 1


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Influence of Solar surface activities

to Earth


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The Sun appears white to us

but it

radiates in all

wavelengths

(visible and

nonvisiblecolors)

The electromagnetic spectrum


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The Sun in Another Light

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YUV420 codec decompressorare needed to s ee this picture.

Extreme Ultraviolet image of the Sun at 195 Angstroms

Visible Light has wavelengths between 4000 and 7000 Angstroms


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Plasma emission

traces out magnetic

fields in the solarcorona

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Cinepak decompressorare needed to see this picture.

Seeing Magnetic Field

lines


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Solar prominence dwarfs Earthin size

Huge flare of 28 October 2003

Common during the Sunsactive periods

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YUV420 codec decompressorare needed to see t his picture.

Solar Eruptions


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The 11 year

sunspot cycle

A regular cycle of sunspot numbersover the past 300 years.

The amount of

magnetic activity

on the Sun varies

in an 11 year cycle.


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Dramatic changes occur during the

solar cycle

X-ray and magnetic activitycompared


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Explosions on the Sun

(Coronal Mass Ejections) A billion tons of hot gas

being launched from the

Sun.

White circle in image indicates size and

location of Sun, which is blocked by a

metal disk in the instrument.

Coronagraphs-

Artificial Eclipses


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A solar wind streams into the solar

system and shapes Earths

magnetosphere


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The Sun generates Space

Weather in our solar system

Solar activity can have a dramatic impact on

communications, satellites, and astronauts.


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Solar activity causes colorful

aurorae


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Space Weather

affects the Moonand other planets

we hope to explore.

Mars

Auroraeon

Neptune,

Saturn,

and

Jupiter

Space Science 2

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Transcript of Space Science 2