ASTRO 200 FILL IN

• Organisms whose cells lack a nucleus are called prokaryotes.
• The study of life in the universe is best described by the term astrobiology
• The Drake equation allows us to estimate the number of intelligent civilizations that have existed in our galaxy during its entire lifetime
• The CNO cycle is a type of hydrogen fusion that uses carbon, nitrogen, and oxygen atoms as catalysts
• Molecules like water in which electrons are distributed unevenly within the molecule are referred to as polar molecules.
• Hot jupiters are jovian planets that orbit their stars with very short orbital periods.
• One of the earliest discovered planets orbiting another star was called Gamma Cephei Ab. In this name, the A indicates that Gamma Cephei A is part of a(n) binary star system.
• The fact that many different organisms on Earth have developed eyesight provides evidence for convergent evolution.
• Arthur C. Clarke said that “Any sufficiently advanced technology is indistinguishable from magic.”
• The rocket equation determines how much fuel is needed per kilogram of payload that a rocket carries to space
• Galileo saw the entire set of phases of Venus through his telescope.
• Large doses of ultraviolet light can cause sunburn and skin cancers.
• The sense of revolution and rotation in the solar system is due to the conservation of angular momentum.
• All the planets revolve around the Sun in a(n) counter-clockwise direction as viewed from above Earth’s north pole.
• The search for Earth-like extraterrestrial life is essentially a search for water.
• The discovery of extremophiles on Earth suggests that life elsewhere may be possible over a much wider range of conditions than initially thought.
• The photosphere is a thin layer of gas from which Earth receives most of the Sun’s light.
• CNO Cycle is a type of hydrogen fusion that uses carbon, nitrogen, and oxygen atoms as catalysts
• The rocket equation determines how much fuel is needed per kilogram of payload that a rocket carries to space.
• Hot jupiters are jovian planets that orbit their stars with very short orbital periods.
• The Drake equation allows us to estimate the number of intelligent civilizations that have existed in our galaxy during its entire lifetime
• At the end of its life, our Sun will leave behind an object similar to that shown by an arrow in the picture on the right. That object is called a white dwarf.
• The Nice model tries to explain how a planet the size of Neptune is found at a great distance from the Sun.
• The photosphere is a thin layer of gas from which Earth receives most of the Sun’s light.
• Hot jupiters are jovian planets that orbit their stars with very short orbital periods.
• The fact that many different organisms on Earth have developed eyesight provides evidence for convergent evolution.
• The Drake equation allows us to estimate the number of intelligent civilizations that have existed in our galaxy during its entire lifetime
• The CNO cycle is a type of hydrogen fusion that uses carbon, nitrogen, and oxygen atoms as catalysts
• The walls of cells are referred to by biologists as membranes
• The difference between apparent brightness and luminosity is because of distance
• The fact that many different organisms on Earth have developed eyesight provides evidence for convergent evolution.
• stellar parallax is the apparent yearly motion of nearby stars against the background of far away stars
• The Nice model tries to explain how a planet the size of Neptune is found at a great distance from the Sun
• The CNO cycle is a type of hydrogen fusion that uses carbon, nitrogen, and oxygen atoms as catalysts
• Hot jupiters are jovian planets that orbit their stars with very short orbital periods
• Certain gases in the atmosphere – water vapor, carbon dioxide, methane, and nitrous oxide – help maintain Earth’s temperature and climate. These are called greenhouse gases
• Galileo saw the entire set of phases of Venus through his telescope.
• All the planets revolve around the Sun in a(n) counter-clockwise direction as viewed from above Earth’s north pole.
• The fact that terrestrial planets have cores of iron and nickel is due to differentiation during the formation of the planets.
• Photons of light incident on the atoms of a gas are absorbed by the electrons in the atoms.