Lunar eclipse Wed. Oct. 8 /detroit /detroit
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Lunar eclipseWed. Oct. 8http://www.timeanddate.com/eclipse/in/usa/detroit
SPACE ROCKSpages 595-599Coming to a planet near you.
CometsMade of rock, ices and tars Snowy dirtballsTwo tails: 1)made of gases (straight, dim) and 2)rocks (curved, bright)Tails only seen when close to sunComa- head of comet
Comet HalleyPerihelion 2062Last seen in 1986Seen every 76 years
Comet Kohoutek. NASA
Comet Siding Springshttp://mars.nasa.gov/comets/sidingspring/
The Oort Cloud
Forms a spherical shell around solar system
Home to long period comets> 200 years
The Kuiper Belt
Home to short-period comets < 200yearsOrbit on the same plane as planetsDonut shaped
Stardust missionLanded on a cometBrought sample back to earth!
StardustStardust rendezvoused with Comet Wild 2 on January 2, 2004.Stardust uses aerogel to collect and trap comet and solar wind particles.
Stardust Sample ReturnThe sample landed in the Utah desert January 15, 2006.Only sample return mission expect ApolloFound water and carbon
Making a Deep ImpactThe mission will blow a football-field sized crater ( 7 stories deep) in Comet Tempel 1 on July 4, 2005.This will be our first look at the fresh inside layers of a comet.Found water ice
What Kind of Impact ?370 kg Copper impactor (816 lbs.).Impact speed 10.2 km/sEnergy released 18 gigajoules = (4.5 tons of TNT).Impactor must hit an area less than 6 km (3.7 miles) in diameter from about 864,000 km (536,865 miles) away.
Lets take a look-
Deep Impact missionImpacted a cometBaby step in destroying space rocks
Left over planet materialsRock material
Must be IN SPACEMost are small
A meteoroid burning up in the atmosphereWhen many are burning= meteor shower
Three Groups:Stony (chondrite)- rock like
Iron- metallic appearance
Russia meteorite 2/15/13
Meteor crater, AZ
Meteor craterwhy are craters rare on Earth?
Craters are rare on Earth because.Atmosphere burns them up
They get eroded away
ASU meteorite lab
Worden MeteoriteFell in 1997 in Ann ArborThrough a garage1550 grams
Titicaca CraterSept. 15, 2007
NASA - Asteroid Will Miss In 2019 - End Of World On Hold The announcement that 2019 is a non-starter was made after further observations by NASA's Near-Earth Objects Office. But they said a remote chance remained that the two-kilometre-wide space rock, known as 2002 NT7, could crash into our planet in 2060. Astronomers initially spotted the asteroid on 5 July, through the Linear Observatory's automated sky survey programme in New Mexico, and early calculations showed it was due to hit our planet on 1 February, 2019.
NEOSNear Earth Objects