Solar System Objects Observed in the SDSS Commissioning Data
Other objects in the Solar System
description
Transcript of Other objects in the Solar System
![Page 1: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/1.jpg)
Other objects in the Solar System
![Page 2: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/2.jpg)
S1-4-08b Differentiate between the major components of the universe.
KEY WORDSMoon Asteroid TrojanMeteoroid Meteorite MeteorComet
![Page 3: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/3.jpg)
Moons
![Page 4: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/4.jpg)
Moon: Large natural object (rock/metals) that revolves around a planet – also called a satellite.
• Probes (robot explorers) have investigated moons of Mars, Jupiter and Saturn
The Roman goddess of the moon was Luna
Planet (2006) Known moonsMercury 0
Venus 0Earth 1Mars 2
Jupiter 63Saturn 60Uranus 27
Neptune 13Pluto 3
• (Oct 2008) 172 known moons in our Solar System
![Page 5: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/5.jpg)
Io - only moon known to have active volcanoes
Europa – contains more ice and water than Earth and may contain life.
![Page 6: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/6.jpg)
Humans have visited the moon’s surface six times between 1969 and 1972.
• 1st- Soviet Luna 2 (1959)• 2nd brightest object in sky
• No atmosphere• ¼ diameter of Earth
The gravitational pull of the moon on our
ocean is what causes the tide to rise and
fall
![Page 7: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/7.jpg)
Asteroids
![Page 8: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/8.jpg)
Asteroid: Chunk of rock/metal that orbits the Sun but too small to be planets – minor planets.
• Asteroid that cross path with Earth called TrojansThe fear is that a Trojan passes close enough to get
pulled in by Earth’s gravity and collide
• Asteroid belt in large gap from Mars – Jupiter• Largest is only 1000 Km in diameter
• Asteroids are rich in minerals – future mining
![Page 9: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/9.jpg)
Meteoroids
![Page 10: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/10.jpg)
Meteoroid: lump of rock that is trapped by Earth’s gravity and pulled into the atmosphere.
The only difference between meteoroid and asteroid is that a meteoroid is random, an asteroid orbits the Sun
Falling meteoroids bump into air molecules heating up (friction) until the air glows – and the meteoroid burns up
and breaks apart.
• Meteoroid that completely burns up - meteor• producing a streak of light - shooting star
![Page 11: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/11.jpg)
Meteorite: fragment of a meteoroid that doesn’t burn up and strikes the Earth (space rock).
• Large meteorites make craters• Westhawk Lake is a crater
Meteorite impact crater in Arizona
![Page 12: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/12.jpg)
Comets
![Page 13: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/13.jpg)
• Some have regular periods of revolution around the Sun
Comet: chuck of ice/dust that orbits the Sun. • Made of the head (coma) and the tail
• Tail: passing by Sun heats trailing gas and debris then blown out by solar wind - millions of km long
Halley’s comet: last seen in 1986 it has a period of 76 years
![Page 14: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/14.jpg)
![Page 15: Other objects in the Solar System](https://reader038.fdocuments.us/reader038/viewer/2022103006/56813e4e550346895da83b66/html5/thumbnails/15.jpg)
CAN YOU ANSWER THESE QUESTIONS?
S1-4-08b:What other objects make up our solar system?
KEY WORDSMoon Asteroid TrojanMeteoroid Meteorite MeteorComet