Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.
-
Upload
russell-sutton -
Category
Documents
-
view
212 -
download
0
Transcript of Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.
![Page 1: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/1.jpg)
Comets, Asteroids, and Meteoroids
![Page 2: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/2.jpg)
1801Year Giuseppe Piazzi discovered the first
asteroid, Ceres
![Page 3: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/3.jpg)
4.6Earth years it takes the asteroid Ceres to travel around the sun (Ceres – Biggest Asteroid with
a 960 km circumference)
![Page 4: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/4.jpg)
2880Year asteroid 1950 DA will pass close to Earth
– The greatest known impact hazard
![Page 5: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/5.jpg)
Asteroids
Asteroids are small, rocky worlds. Most asteroids revolve around the sun between the orbits of Mars and Jupiter. (asteroid belt)
![Page 6: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/6.jpg)
Asteroids
Earth has been struck many times in its history by asteroids.
![Page 7: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/7.jpg)
![Page 8: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/8.jpg)
This 142-million-year-old crater has a diameter of almost fourteen miles (twenty-two km). Like many craters on Earth, it is misleading. The raised ring that is clearly visible to the left is not the crater rim. It is an erosional remnant. The remains of the actual rim are found farther out from the ring.
![Page 9: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/9.jpg)
![Page 10: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/10.jpg)
•100 km
•212 Million years old
•Canada
![Page 11: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/11.jpg)
![Page 12: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/12.jpg)
![Page 13: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/13.jpg)
Type CompositionPercentage of Asteroids
Albedo (reflectivity)
Carbon (C-type)
Carbonover 75 percent
0.03-0.09 (Very dark)
Silicate (S-type)
Metallic iron mixed with iron-silicates and magnesium-silicates
17 percent0.10 -0.22 (Relatively
bright)
Metallic (M-type)
Iron/ nickelless than 7
percent
0.10-0.18 (Relatively
bright)
Dark (D-type)
Water ice/frozen carbon monoxide mixed with rock
less than 1 percent
0.05 (Relatively dark and reddish)
What are they made of?
![Page 14: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/14.jpg)
![Page 15: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/15.jpg)
![Page 16: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/16.jpg)
![Page 17: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/17.jpg)
Asteroid Ida and the tiny moon Dactyl
![Page 18: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/18.jpg)
Comets A comet is a “dirty snowball” about the size of an earth mountain. (dirt and ice)Comets’ orbits are usually very long, narrow ellipses. They produce tails of gas and dust when they approach the sun.
![Page 19: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/19.jpg)
![Page 20: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/20.jpg)
Halley’s Comet…. Orbits every 76 years
![Page 21: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/21.jpg)
Halley’s Comet Orbit…next seen in 2062
![Page 22: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/22.jpg)
Oort Cloud
![Page 23: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/23.jpg)
Comet: Hale-Bopp
Winter and early spring of
1997
Next sighting: 4380
www.brainpop.com/science/space/comets/
![Page 24: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/24.jpg)
Deep Impact colliding with Temple1
![Page 25: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/25.jpg)
![Page 26: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/26.jpg)
Organic compounds
![Page 27: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/27.jpg)
Meteoroid
A meteoroid is a chunk of rock, metal, or dust in space.
![Page 28: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/28.jpg)
A Meteor: “A shooting star”
Shooting stars are not actually stars. These flashes of light across the sky are small bits of rock burning up in the Earth’s Atmosphere.
![Page 29: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/29.jpg)
Meteorite
Meteoroids that survive as they pass through the
atmosphere and hit Earth’s surface are called
meteorites.
![Page 30: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/30.jpg)
http://www.meteorlab.com/METEORLAB2001dev/Open1.htm
There are three major types of meteorites: stone, iron and
stony-iron.
![Page 31: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/31.jpg)
Barringer Meteor Crater, Arizona
A meteorite can make a hole, or crater, in the ground when it hits it. The larger the meteorite, the bigger the hole.
![Page 32: Comets, Asteroids, and Meteoroids. 1801 Year Giuseppe Piazzi discovered the first asteroid, Ceres.](https://reader036.fdocuments.in/reader036/viewer/2022070400/56649f0d5503460f94c21db2/html5/thumbnails/32.jpg)
METEOROID: A piece of stone or metal that travels in outer space.
METEOR: An object from space that becomes glowing hot when it passes into Earth's atmosphere.
METEORITE: A piece of stone or metal from space that falls to Earth's surface.
SUMMARY