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Documents The Sun. Of medium size by star standards, it is composed mainly of hydrogen (73 percent by mass)...

Slide 1 The Sun Slide 2 Of medium size by star standards, it is composed mainly of hydrogen (73 percent by mass) and helium (25 percent by mass) Slide 3 The rest is made…

Documents Szydagis04.13.2015 1 / 14 NASA/STEREO/SDO/GSFC 1. How do we know that the sun is a star (and...

Slide 1 Slide 2 Szydagis04.13.2015 1 / 14 NASA/STEREO/SDO/GSFC Slide 3   1. How do we know that the sun is a star (and bonus: when and how did we learn this in history?…

Documents Space News Update - September 12, 2014 - In the News Story 1: Story 1: NASA’s Orion Spacecraft...

Slide 1Space News Update - September 12, 2014 - In the News Story 1: Story 1: NASA’s Orion Spacecraft Nears Completion, Ready for Fueling Story 2: Story 2: Curiosity Readies…

Documents THE SUN Energy from the sun, in the form of sunlight supports all life via photosynthesis, and...

Slide 1THE SUN Energy from the sun, in the form of sunlight supports all life via photosynthesis, and drives the Earth’s climate and weather. Slide 2 THE SUN Began shining…

Documents Solar Storm Solar Eruptions: Effects on Earth Satellites (1997 AT&T Telstar- TV; 1998 PanAmSat...

Slide 1 Slide 2 Solar Storm Slide 3 Solar Eruptions: Effects on Earth Satellites (1997 AT&T Telstar- TV; 1998 PanAmSat Galaxy 4- ATM, Airlines, Pagers) Power Stations…

Documents Magnetic Activity Astronomy 315 Professor Lee Carkner Lecture 11.

Slide 1 Magnetic Activity Astronomy 315 Professor Lee Carkner Lecture 11 Slide 2 Exercise 10 -- Stellar Interiors a)(3X10 29 kg in core) / (1.67X10 -27 kg per H atom) a)=…

Documents Spacecraft Structure Requirements –Mass, Strength, Stiffness, Cleanliness (Particulate/Magnetic).....

Slide 1 Spacecraft Structure Requirements –Mass, Strength, Stiffness, Cleanliness (Particulate/Magnetic) Constraints –Fields of view (instruments, thrusters, motors)…

Documents The global character of the 2010.08.01 Earth-directed coronal mass ejection and its trigger Xuepu...

Slide 1 The global character of the 2010.08.01 Earth-directed coronal mass ejection and its trigger Xuepu Zhao and J. Todd Hoeksema Stanford University The Firs SDO Workshop,…

Documents Stephanie Moats Mentor: Kathy Reeves August 2009 Harvard-Smithsonian Center for Astrophysics.

Slide 1 Stephanie Moats Mentor: Kathy Reeves August 2009 Harvard-Smithsonian Center for Astrophysics Slide 2 Coronal Mass Ejection. Taken from the SOHO Spacecraft January…

Documents Solar Eclipse Size of Sun, Earth, etc. Lecture 6.

Slide 1 Solar Eclipse Size of Sun, Earth, etc. Lecture 6 Slide 2 Because of the different sizes of Earth umbra and lunar umbra : Moon is about 4 times smaller than Earth…