What is the likely explanation for the existence of hot Jupiters?
Today, the leading hypothesis for the existence of hot Jupiters is that they formed in their outer solar systems and then migrated inward.
What are hot Jupiters and why was their discovery surprising to astronomers what did their discovery mean for the nebular theory?
*Hot Jupiters are jovian planets that are very close to their stars. Their discovery came as a surprise to scientists because in our solar system jovian planets are only found far from the Sun.
Why were scientists surprised when they first discovered the existence of planets with Jupiter-like masses orbiting close to their stars the hot Jupiters )? Quizlet?
Why were scientists surprised when they first discovered the existence of planets with Jupiter-like masses orbiting close to their stars (the "hot Jupiters")? The nebular theory predicts that jovian planets should only form at much larger distances from their stars.
Why is the existence of hot Jupiters puzzling quizlet?
Why is the existence of "hot Jupiters" puzzling? "Hot Jupiters" are found near stars in very hot places where they should not have formed and show evidence of boiling away.
How do we think hot Jupiters formed quizlet?
How do we think hot Jupiters formed? Hot Jupiters formed beyond the frost line, as in our solar system, and migrated inward due to interaction with the solar nebula.
How do we think the hot Jupiters around other stars were formed?
How do we think the "hot Jupiters" around other stars were formed? They formed as gas giants beyond the frost line and then migrated inwards.
Why are hot Jupiters a problem for the nebular hypothesis?
Hot Jupiters are gas giant planets that orbit very close to their host stars, with orbital periods up to ~100 days (about the same as Mercury), which means they are incredibly hot and exposed to erosion by fierce stellar winds. These objects cannot be explained by the nebular hypothesis alone.
How do we think hot Jupiters formed Why didn’t one form in our solar system?
How do we think hot Jupiters formed? Hot Jupiters formed beyond the frost line, as in our solar system, and migrated inward due to interaction with the solar nebula. Why didn't one form in our solar system? Because the nebula must have dispersed shortly after the formation of our jovian planets.
What process did we have to add to the model to explain hot Jupiter extrasolar planets?
Hot Jupiters like 51 Pegasi b were the first type of planet discovered around sun-like stars. What led to their discovery? It occurred after astronomers started using a technique called the radial velocity method to look for extrasolar planets.
What do we mean by a hot Jupiter quizlet?
What do we mean by a "hot Jupiter"? a planet that is Jupiter-like in size but orbits very close to its star.
How does the nebular hypothesis explain hot Jupiters?
The nebular theory predicts that massive Jupiter-like planets should not form inside the frost line (at << 5 AU). The discovery of hot Jupiters has forced reexamination of nebular theory. Planetary migration or gravitational encounters may explain hot Jupiters.
Which of the following is a consequence of the discovery of hot Jupiters for understanding our own solar system?
Which of the following is a consequence of the discovery of hot Jupiters for understanding our own Solar System? It shows that we do not fully understand the formation of our Solar System. If every star had an Earth-like planet in an Earth-like orbit, how many could be detected by a transit?
How can we explain the extrasolar hot Jupiters that are close to their stars?
How can we explain the extrasolar hot Jupiters that are close to their stars? Large planets do form far from their star, but their orbits can change due to gravitational encounters with other objects. Large planets do form far from their star, but waves of material can pull on planets and alter orbits.
Why are hot Jupiters A problem for the nebular hypothesis?
Hot Jupiters are gas giant planets that orbit very close to their host stars, with orbital periods up to ~100 days (about the same as Mercury), which means they are incredibly hot and exposed to erosion by fierce stellar winds. These objects cannot be explained by the nebular hypothesis alone.
Which of the following is a reason that astronomers have not found giant planets with the orbit of Neptune around other stars?
Which of the following is a reason that astronomers have not found many giant planets with the orbit of Neptune around other stars? Neptune takes 165 years to go around the Sun; getting information about just one cycle of such a planet's orbit around another star would take astronomers 165 years.
Which of the following is a reason that astronomers have not found giant planets with the orbit of Neptune quizlet?
Which of the following is a reason that astronomers have not found many giant planets with the orbit of Neptune around other stars? Neptune takes 165 years to go around the Sun; getting information about just one cycle of such a planet's orbit around another star would take astronomers 165 years.
Which of the following is a reason that astronomers have not found giant planets with the orbit of Neptune?
Which of the following is a reason that astronomers have not found many giant planets with the orbit of Neptune around other stars? Neptune takes 165 years to go around the Sun; getting information about just one cycle of such a planet's orbit around another star would take astronomers 165 years.
What is the primary reason that astronomers have learned more about the Solar System in the last forty years than all of prior history?
what is the most important reason that astronomers have learned more about our planetary system in the last 30-40 years than all of history before then ? we have been able to send spacecraft to planets and moons up close.
Why are astronomers today not able to say what the surface of Titan looks like?
— Voyager 1 did not see Titan's surface because it is obscured by a thick, uniform layer of haze that envelops the moon completely.
What is the most important reason that astronomers have learned more about our planetary system in the last 30 to 40 years then all of history before then?
what is the most important reason that astronomers have learned more about our planetary system in the last 30-40 years than all of history before then ? we have been able to send spacecraft to planets and moons up close.
What is the current theory about the formation of the solar system?
the nebular hypothesis Contemporary view. The most widely accepted hypothesis of planetary formation is known as the nebular hypothesis. This hypothesis posits that, 4.6 billion years ago, the Solar System was formed by the gravitational collapse of a giant molecular cloud spanning several light-years.
Why do scientists think that Ganymede’s interior may have been heated as recently as a billion years ago?
What is the evidence that Ganymede's interior was heated as recently as one billion years ago? — Because Ganymede's internal differentiation indicates that the moon was largely molten at some point in time in the past.
What is differential rotation and how is it observed on Jupiter quizlet?
What is differential rotation, and how is it observed on Jupiter? Differential rotation: rotation of a planet is not constant from one location to the other. (Equatorial zones rotate faster on Jupiter, the interior rotates at the same rate as the polar regions).
Why do astronomers today think that we have an asteroid belt and not a planet between Mars and Jupiter quizlet?
Why do astronomers today think that we have an asteroid belt and not a planet between Mars and Jupiter? Jupiter's gravity prevented material in that zone from getting together.
What is one way that astronomers have actually gotten an idea of the age of the surfaces of terrestrial planets?
What is one way that astronomers have actually gotten an idea of the age of the surfaces of terrestrial planets other than the Earth? On Earth, we can get the age of various parts of our planet by finding rocks that contain radioactive atoms.
What is the current theory for the formation of our solar system quizlet?
The Nebular theory holds that the solar system formed from the gravitational collapse of an interstellar cloud known as the solar nebula. This cloud was the product of recycling of gas through many generations of stars within our galaxy.
Which of the following theories proposed that the planets were formed from the substances that were torn out of the Sun?
The most widely accepted explanation of how the solar system formed is called the nebular hypothesis. According to this hypothesis, the Sun and the planets of our solar system formed about 4.6 billion years ago from the collapse of a giant cloud of gas and dust, called a nebula.
What is Jupiter thought to be like beneath its clouds Why do we think this?
What is Jupiter thought to be like beneath its clouds, and why do we think this? — We think that Jupiter's clouds are probably less than 200km thick, and that below them the temperature and pressure steadily rise as the atmosphere becomes the "interior" of the planet.
What is interesting about Jupiter’s rotation period?
What is interesting about Jupiter's rotation period? It is the fastest in the solar system.
How does Jupiter exhibit differential rotation?
Jupiter also exhibits differential rotation. A solid body rotates at a single angular speed, but a liquid or gaseous body need not rotate as a solid. In the case of Jupiter, rotation is slightly faster at the equator than at the poles.