Why do astronomers believe Triton may have been a planet that was captured by Neptune?
A) It orbits Neptune in the opposite direction of Neptune's rotation.
B) It is too large to have been formed in the jovian nebula that formed Neptune.
C) It has an atmosphere and a measurable greenhouse effect.
D) It undergoes seasonal changes.
E) It is colder than any other moon or planet.
Question 2
On a Hertzsprung-Russell diagram, where would we find white dwarfs?
A) upper right
B) lower right
C) upper left
D) lower left
Extent of agricultural activity across the planet (data from Foley et al. 2005).
Triton’s South Polar Cap
The Capture and Destruction of Triton
Benvenuto Cellini, Saltcellar: Neptune (Sea) and Tellus (Earth).
Human of the planet's net primary production and appropriation of NPP
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ...