1 / 8

Tuesday September 27, 2011

Tuesday September 27, 2011. (Quiz 4; The Birth of a Solar System). The Launch Pad Tuesday, 9/27/11. What, most likely, created the asteroid belt?. Latest News.

kendis
Download Presentation

Tuesday September 27, 2011

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TuesdaySeptember 27, 2011 (Quiz 4; The Birth of a Solar System)

  2. The Launch Pad Tuesday, 9/27/11 What, most likely, created the asteroid belt?

  3. Latest News A strong-to-severe (Kp=8) geomagnetic storm is in progress following the impact of a coronal mass ejection (CME) at approximately 8:15a.m. EDT (12:15 UT) on Sept. 26. The Goddard Space Weather Lab reported a strong compression of Earth's magnetosphere. Simulations indicate that solar wind plasma has penetrated close to geosynchronous orbit starting at 9am. Geosynchronous satellites could therefore be directly exposed to solar wind plasma and magnetic fields. High-latitude sky watchers should be alert for auroras after nightfall. Sunspot 1302 has already produced two X-flares (X1.4 on Sept. 22 and X1.9 on Sept. 24th). Each of the dark cores in this image from SDO is larger than Earth, and the entire active region stretches more than 100,000 km from end to end. The sunspot's magnetic field is currently crackling with sub-X-class flares that could grow into larger eruptions as the sunspot continues to turn toward Earth. (Credit: NASA/SDO/HMI)

  4. Quiz 4

  5. The Birth of a Solar System The history of our Solar System began about 13.7 billion years ago with the Big Bang creation event. This provided the elements, along with later material from former stars, to form the solar system.

  6. The Protoplanet Nebular Model A large, rotating nebula began to form. As a result of gravitational contraction, the spin rate increased. Most mass concentrated in the central proto-star. The remaining material formed an accretion disk. The material in the accretion disk began to clump. The nebula began to contract about 5 billion years ago. The heavier element s were formed in many earlier stars and supernovas. Dust, gas and chemical compounds began to concentrate in a region of space. Supernova shockwaves helped to “clump” the matter. The protosun became a star. The solar ignition flare-up may have blown away the hydrogen and helium atmospheres of inner planets. The protoplanets heated, separating heavy and light minerals. Larger bodies cooled slower, with heavy materials settling over longer times into central cores.

More Related