lecture 2 - Lecture 2 Notes 1/10/11 What Happened to Poor...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 2 Notes 1/10/11 What Happened to Poor Pluto? Gas Giants Big Massive Outer Solar System Terrestrial World Rocks Small Inner Solar System 1 Astronomical Unit = 1500 Million KM= 93 Million miles In 2005 Michael Brown of Caltech discovered a new body that was comparable in size to Pluto with a similar distant orbit What Do We Know About Pluto? Tiny! (smaller than 7 large moons) Density ~ 2 gm/cm^3 Lets look at the Earth Made of several Layers The inner core: solid iron and nickel The outer core: a liquid iron and nickel The Mantle: a dense and mostly solid rock material The crust a thin rock material The Density of Earth is 5.53 gm/cm^3
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
We know thatEarth is covered in rocks Mostly by granite Density of 2.6 gm/cm^3 The ocean is mostly covered by Basalt Density of 3.3 gm/cm^3 Iron has density of 7.9 gm/cm^3 and Nickel of 8.9 gm/cm^3 So we believe the inside of the earth is made of these heavy elements Density is an average of iron nickel and rocks pluto has 2.06 gm/cm^3 Do not see much of an atmosphere heavier than gas but ligher than rocks mixture of ice and rock – clearly not as gas giant Pluto's Orbit Highly eccentric orbit on the inner edge of theorized Kuiper belt ( smaller bodies in orbit beyond neptune) Highly inclined to the planet of the solar system ( called the ecliptic) – something is odd Precedent: Ceres Largest body in the asteroid belt (950 km)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/14/2011 for the course ASTRO 115 taught by Professor Bergins during the Winter '11 term at University of Michigan.

Page1 / 7

lecture 2 - Lecture 2 Notes 1/10/11 What Happened to Poor...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online