DWARF —SCATTERED DISK Our Eris is covered in ices; it partly thaws PLANET when it nears the every 557 . Valleys carved by glaciers and tall GAS mountains of ice border a windswept . Neptune has very active systems, Relative size and interesting facts for all known objects including the strongest sustained in The axis of of Uranus is tilted the solar system: up to 2100 km/h. sideways, probably due to a collision with over 1500 km in diameter (and two notable others). an -sized object soon after it formed. Positions not to scale; approximately true color. LARGEST OF URANUS : Enormous : one goes nearly from to pole. , A OF PLUTO, : Its ancient surface is almost entirely covered with craters. and Pluto itself mutually a point between the two. GAS GIANT PLANET (Separation and shown to scale.) The consist of innumerable small clumps of ice and dust orbiting the planet together.

LARGEST : A 13 km high ridge runs halfway around its equator. : Has rivers, lakes, and made of liquified natural gas. , A MOON OF NEPTUNE : Giant ice cliffs from tectonic activity streak its surface. Orbits backward and has of liquid nitrogen.

Sun MAIN SEQUENCE The Sun’s hot plasma twists its powerful magnetic field into knots, causing sunspots and intense solar flares.

LARGEST MOONS OF : Over 400 active volcanoes due to Jupiter’s . : Has an ocean of liquid under its ice . The Moon (OF EARTH) : So large that it creates its own magnetic field. Stable surface and low radiation due to its wide orbit. Probably formed when a -sized : object collided with the early Earth. Mercury rotates so slowly that sunrise to sunset lasts a full Mercury (about 88 Earth days).

Ceres DWARF PLANET— BELT contains ⅓ of the of TERRESTRIAL PLANET the entire .

Venus’s thick CO2 and sulfuric Earth Mars Jupiter acid trap heat like a greenhouse: its surface is hot enough to melt lead! TERRESTRIAL PLANET TERRESTRIAL PLANET GAS GIANT PLANET On this tiny planet, alone in the The ice caps of Mars grow a layer of Jupiter’s bands include vastness of space, every person you’ve each winter. In spring it turns back into CO2 gas, the , a vast ever loved has lived out their . causing 400 km/h winds and global dust . that has persisted for hundreds of years.

Orbital Sun ASTEROID KUIPER Distances Mercury Venus Earth Mars BELT Jupiter Saturn Uranus Neptune BELT © 2012 by Steuard Jensen (Alma College). Released under a Creative Commons BY-NC-SA License. Image credits: S. Jensen: Sun (simulated; surface from SST/Swedish Acad. of Sciences/Göran Scharmer, Kai Langhans, Mats Löfdahl). NASA/Johns Hopkins U. Applied Physics Lab./Arizona State U./Carnegie Inst. of Washington: Mercury. NASA/JPL: Venus ( processing by R. Nunes—http://www.astrosurf.com/nunes), Ganymede, Uranus, Titania, Oberon, Neptune, Triton. NASA Visible Earth (http://visibleearth.nasa.gov/): Earth. NASA/Sean Smith: Moon. NASA and The Hubble Heritage Team (STScI/AURA): Mars. NASA/ESA/J. Parker (Southwest Research Inst.), P. Thomas (Cornell U.), L. McFadden (U. of Maryland, College Park), and M. Mutchler and Z. Levay (STScI): Ceres. NASA/JPL/Space Inst.: Jupiter, Saturn, Titan, Rhea, Iapetus. NASA/JPL/DLR: Callisto, Europa. NASA/JPL/U. of Arizona: Io. NASA/Johns Hopkins U. Applied Physics Lab./Southwest Research Inst.): Pluto, Charon. NASA/ESA/M. Brown: Eris.