Comets and Asteroids
All about Comets
- Comets come from two places: The Kuiper Belt and the Oort Cloud.
- From far away it looks like a dirty snowball. (dust and rocks.) Close up they look like hazy streaks or faint smudges in the sky.
- Comets have a tail when it reaches the sun causing it to heat up and the solid ( ice ) quickly turns in water vapor, releasing the dust particles. They comets ingredients determines the types and number of tails.
Sources : http://hubblesite.org/reference_desk/faq/answer.php.id=18&cat=solarsystem
Comet IRAS-Araki-Alcock, viewed in infrared light; NASA Infrared Processing and Analysis Center
The Universe: Comets
All about Asteroids
- Asteroids are made of rock and metal. Meteors are seen as streaks of light from earth look like shooting stars. Meteorite are meteors that survived the falling through earth's atmosphere.
- A near-Earth asteroids are asteroids who's orbits are close to Earth's orbit.
- in 1490, about 10,000 people died in the Chinese city Chi ling- yang when an asteroid breaks overhead. The impact it had on the city Chi ling-yang was of course many deaths, but there was no meteorites left so they had no information to figure out where it came from.
Asteroid 2012 DA14
Mountain sized asteroid!
Sources
- "The Universe: Comets." YouTube. History, 10 Sept. 2010. Web. 09 Dec. 2014.
- Prigg, Mark. "Phew! Mountain Sized Asteroid Heading for Earth Spotted by Russian Scientists Poses No Threat, Nasa Says (for 150 Years, at Least)."Mail Online. Associated Newspapers, 09 Dec. 2014. Web. 10 Dec. 2014.
- "National Geographic Search." National Geographic. Britt Lines, 14 Feb. 2013. Web. 10 Dec. 2014.
- "History of Asteroid Impacts." History of Asteroid Impacts. N.p., n.d. Web. 08 Dec. 2014.
-