Phobos is a small moon of Mars. For the purpose of the following problem, assume that Phobos has a mass of 5.8×10^15 kg and that it has a shape of a uniform sphere of radius 7.5×10^3 m. Suppose that a meteroid strikes Phobos 5.0×10^3 m off center and remains stuck. If the momentum of the […]

Select all that apply. Which is the following statements is true? A. Since Venus is closer to the sun than Earth, its surface was hotter and consequently its water vapor could not condense into oceans, but instead remained atmospheric. Since water vapor is a greenhouse gas, this increased Venus’s surface temperature. B. Since Venus did […]

Which of the following does not play a role in creating the elements needed for life as we know it? high mass stars heavy element fusion supernovae neutron stars

Use your SkyGazer software to help you plan another observation. This time when you go outside, look for the plane of the Milky Way in the sky (you may have to make a special trip to somewhere relatively dark to be successful). Then, in a 2-3 paragraph essay, describe what you saw, and compare it […]