Which of the following planets has the least substantial atmosphere?
A) Mercury B) Mars C) Earth D) Neptune E) Venus
Question 2
What do we mean by inflation?
A) the rapid expansion of the universe, driven by white dwarf supernova, that we still observe today
B) the expansion of universe starting with the instant after the Big Bang
C) the sudden release of photons when particles and antiparticles annihilate each other
D) a sudden expansion of the universe driven by the energy released when the strong and electroweak forces froze out from the GUT force
E) the photons released when electrons and protons first combined, forming the Cosmic Microwave Background Radiation
Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere
Titan's dense atmosphere shrouds the moon beneath a tan haze in this image.
Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T
Lightning on Earth
Water on Mars!
Planets