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.
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!
- "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.