What is the likely origin of Triton? Why do we believe this?
What will be an ideal response?
It is probably a captured KBO. It orbits Neptune backwards (or retrograde), and well off from the planet's equator.
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Why is Mars so much colder than the Earth?
A) because the albedo of Mars is higher than the Earth B) because Mars has a much thinner, more diffuse atmosphere C) because Mars has a little less gravity than the Earth D) because Mars is farther from the Sun
A transverse periodic wave is represented by the equation z(y, t) = 1.50 cm sin(1,250 rad/s t + 10.0
What is the direction of the velocity of the wave?
A. the x direction B. the y direction C. the z direction D. the t direction
What are redshift surveys designed to show?
What will be an ideal response?
Galaxies in all directions appear to be redshifted, as if rushing away from us in the center of the universe. How does the cosmological principle handle this problem?
What will be an ideal response?