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chixulub, , , he found iridium in italy, , , gene shoemaker discovered…
chixulub
jean shoemaker
gene shoemaker lived (1928-1997)
shoe maker discovered 100s of asteroids and dozens of comets
he mapped the crater formed by a nuclear bomb
he was a super cool dude
astroids
there was bacteria on one of the asteroids
asteroids are small asteroids that orbit the sun
scientists are looking out every single day for astroids
asteroids are super cool dudes
that is an astroid
craters
barringer crater was 50,000 years ago
Ries crater is a crater in germany, its 20 km
The Chicxulub crater is an impact crater buried underneath the Yucatán Peninsula in Mexico.
dates
1989-first asteroid photo
comets
they are known as "dirty snowballs'' or "cosmic snowballs
they usually have a very elongated orbit
a comet is usually as fast as 2000 miles per hour
comets orbit the sun just like astroids
A comet has four components: a nucleus, a coma, a dust tail and an ion tail.
he found iridium in italy
gene shoemaker discovered iridium
