...sky is a planet? 2. Draw a...
...some evenings the planet Mars is the...
...to see the planet Mercury with the...

...resources how many planet Earths it would...
...It compares humawith planet Earth's ecological capacestimate...

...side of the planet. When the Sun...
...period of a planet is proportional to...
...a distant Jovian planet. Thus, an outer...
...Thus, an outer planet experiences much smaller...
...force on a planet in an elliptical...
...speeds up the planet at closest approach,...
...gravity and the planet slows as it...
...and radius of planet X, respectively, and...
...just behind the planet will gain kinetic...
...energy as the planet’s gravity does net...
...yrK 500 So planet has turned through...
...km above the planet P13.20 The gravitational...
...speed of a planet in a circular...
...6 m (b), (c)Planet and satellite exert...
...upward on the planet. ?11 2422 GMm...
...ahead of the planet and behind it...
...?7 Across the planet, == =×22610. g...
...radius of the planet is r==×39810. m...
...down to the planet. The loss of...
...energy of the two-planet system is conserved...
...R of the planet. 2 2 GMm...
...24 Mass of planet: 59810. kg ×...
...6 Radius of planet: 63710. m Initial...
...Initial x: 0.0 planet radii Initial y:...
...Initial y: 2.0 planet radii Initial vx:...
...the solution; P13.18 Planet Y has turned...

...by a large planet-like object. The appearances...
...is when the planet is near opposition....
...the Sun, this planet appears to meander...
...center of the planet from the north...

...to the red planet. 74 Teaching Hints...
...name of the planet, you might ask...
...spectrum of a planet consists of sunlight...
...surface of the planet. It will contain...
...velocity of the planet. Discuss the role...
...side of the planet would be much...
...side of the planet would be much...
...occur when the planet is at its...
...distance between the planet and the Sun...
...for viewing the planet than others. Additional...
...for viewing the planet. You may find...
...in locating the planet in the glow...
...elongation because the planet is then at...
...observations of the planet are difficult and...
...next because the planet is approaching the...
...next because the planet is receding from...
...months that the planet is visible. The...
...telescope, the ruddy planet presents a disk...
...Significance of the Planet Mercury” in Sky...
...Kunzig, R. “Iron Planet” in Discover, Feb....
...“Mercury: The Forgotten Planet” in Scientific American,...
...Mercury: The Elusive Planet. 1987, Smithsonian Institution...
...“Mercury: The Forgotten Planet” in Sky &...
...Basilevsky, A. “The Planet Next Door” in...
...from a Torrid Planet,” May 1982, p....
...Burnham, R. “Venus, Planet of Fire” in...
...Our Mysterious Twin Planet. 2000, Perseus Books...
...of the Red Planet 1958–1978. 1984, NASA...
...Hartmann, W. “Red Planet Rendezvous” in Astronomy,...
...et al. Red Planet: Scientific & Cultural...
...to the Red Planet” in Astronomy, Oct....
...“Discover the Red Planet” in Astronomy, Jan....
...C. “The Red Planet Isn’t Red” in...
...for a Red Planet” in Cosmos. 1980,...
...23; “The Red Planet’s Colorful Past” in...
...Settle the Red Planet and Why We...
...for a Red Planet” and “Heaven and...

...accretion phase of planet formation, collisions involving...
...density of a planet, the mass and...
...by finding the planet’s diameter from its...
...transit of the planet across the star....
...the star. The planet has a small...
...star formation to planet formation. Comins, N....
...Addison-Wesley. Croswell, K. Planet Quest: The Epic...
...J. Roth. “The Planet of 51 Pegasi”...
...articles about each planet (by noted planetary...
...Price, F. The Planet Observer’s Handbook. 1998,...
...“Does 51 Pegasi’s Planet Really Exist?” in...