Lunar eclipseLunar eclipseWed. Oct. 8Wed. Oct. 8

http://www.timeanddate.com/eclipse/in/usa/detroit

SPACE ROCKSSPACE ROCKSpages 595-599pages 595-599

Coming to a planet near you….Coming to a planet near you….

Comet fun!Comet fun!

http://www.windows.ucar.edu/tour/link=/comets/comet_model_interactive.html

CometsComets Made of rock, ices Made of rock, ices

and tars and tars Snowy dirtballsSnowy dirtballs Two tails: 1)made Two tails: 1)made

of gases (straight, of gases (straight, dim) and 2)rocks dim) and 2)rocks (curved, bright)(curved, bright)

Tails only seen Tails only seen when close to sunwhen close to sun

Coma- “head” of Coma- “head” of cometcomet

Comet HalleyComet Halley

Perihelion 2062Perihelion 2062 Last seen in 1986Last seen in 1986 Seen every 76 yearsSeen every 76 years

Hale-BoppHale-Bopp19971997

Comet Kohoutek. Comet Kohoutek. NASANASA

Comet Siding SpringsComet Siding Springs

http://mars.nasa.gov/comets/sidingspring/

The Oort CloudThe Oort Cloud

Forms a spherical Forms a spherical shell around solar shell around solar systemsystem

Home to long Home to long period cometsperiod comets

> 200 years> 200 years

The Kuiper BeltThe Kuiper Belt

Home to short-Home to short-period comets period comets

< 200years< 200years

Orbit on the same Orbit on the same plane as planetsplane as planets

Donut shapedDonut shaped

Stardust missionStardust mission

Landed on a cometLanded on a cometBrought sample back to earth!Brought sample back to earth!

StardustStardust StardustStardust rendezvoused rendezvoused

with Comet Wild 2 on with Comet Wild 2 on January 2, 2004.January 2, 2004.

StardustStardust uses uses aerogelaerogel to collect and trap to collect and trap comet and solar wind comet and solar wind particles.particles.

Stardust Sample ReturnStardust Sample Return

The sample landed in the The sample landed in the Utah desert January 15, Utah desert January 15, 2006.2006.

Only sample return Only sample return mission expect Apollomission expect Apollo

Found water and carbonFound water and carbon

Making aMaking a Deep Deep ImpactImpact The mission will The mission will

blow a football-blow a football-field sized crater field sized crater

( 7 stories deep) in ( 7 stories deep) in Comet Tempel 1 Comet Tempel 1 on July 4, 2005.on July 4, 2005.

This will be our This will be our first look at the first look at the fresh inside fresh inside layers of a comet.layers of a comet.

Found water iceFound water ice

What Kind of Impact ?What Kind of Impact ? 370 kg Copper impactor 370 kg Copper impactor

(816 lbs.).(816 lbs.). Impact speed – 10.2 km/sImpact speed – 10.2 km/s Energy released – 18 Energy released – 18

gigajoules = (4.5 tons of gigajoules = (4.5 tons of TNT).TNT).

Impactor must hit an area Impactor must hit an area less than 6 km (3.7 miles) in less than 6 km (3.7 miles) in diameter from about 864,000 diameter from about 864,000 km (536,865 miles) away. km (536,865 miles) away.

Let’s take a look-Let’s take a look-

Deep Impact missionDeep Impact mission

Impacted a cometImpacted a cometBaby step in destroying space rocksBaby step in destroying space rocks

Left over planet Left over planet materialsmaterials

Rock materialRock material

From Galileo

Must be IN SPACEMust be IN SPACE Most are smallMost are small

A meteoroid burning up A meteoroid burning up in the atmospherein the atmosphere

When many are burning= When many are burning= meteor showermeteor shower

Hits earthHits earth

Three Groups:Three Groups: Stony (chondrite)- rock Stony (chondrite)- rock

likelike

Iron- metallic appearanceIron- metallic appearance

Stony-Iron- both!Stony-Iron- both!

Russia meteorite 2/15/13Russia meteorite 2/15/13

Meteor crater, AZMeteor crater, AZ

Meteor craterMeteor craterwhy are craters rare on Earth?why are craters rare on Earth?

Craters are rare on Earth Craters are rare on Earth because….because….

Atmosphere burns them upAtmosphere burns them up

They get eroded awayThey get eroded away

ASU meteorite labASU meteorite lab

Smithsonian meteoritesSmithsonian meteorites

Worden MeteoriteWorden Meteorite

Fell in 1997 in Ann Fell in 1997 in Ann ArborArbor

Through a garageThrough a garage 1550 grams1550 grams

Titicaca CraterTiticaca CraterSept. 15, 2007Sept. 15, 2007

Titicaca meteoriteTiticaca meteoritechondritechondrite

NASA - Asteroid Will Miss In 2019 - NASA - Asteroid Will Miss In 2019 -

End Of World On Hold End Of World On Hold The announcement that 2019 is a non-starter The announcement that 2019 is a non-starter

was made after further observations by NASA's was made after further observations by NASA's Near-Earth Objects Office. But they said a Near-Earth Objects Office. But they said a remote chance remained that the two-kilometre-remote chance remained that the two-kilometre-wide space rock, known as 2002 NT7, could wide space rock, known as 2002 NT7, could crash into our planet in 2060. Astronomers crash into our planet in 2060. Astronomers initially spotted the asteroid on 5 July, through initially spotted the asteroid on 5 July, through the Linear Observatory's automated sky survey the Linear Observatory's automated sky survey programme in New Mexico, and early programme in New Mexico, and early calculations showed it was due to hit our planet calculations showed it was due to hit our planet on 1 February, 2019. on 1 February, 2019.

NEO’SNEO’S

Near Earth ObjectsNear Earth Objects

http://www.spaceweather.com/