Opakování z minulého cvičení
... renewed by 'new' comets picked up by the Solar System when it passes through giant molecular clouds. The Oort cloud may contain 100 billion comets. From time to time, the gravitational influence of a passing star will disturb the Oort cloud and send comets in towards the Sun, where the gravitational ...
... renewed by 'new' comets picked up by the Solar System when it passes through giant molecular clouds. The Oort cloud may contain 100 billion comets. From time to time, the gravitational influence of a passing star will disturb the Oort cloud and send comets in towards the Sun, where the gravitational ...
Midterm 2 - SwRI Boulder
... likely that a significant amount of water has been lost due to Mars's small size and lack of magnetosphere. So a northern ocean of water is certainly reasonable. There is evidence of a significant amount of water on Mars until 2-3 Gyr ago. Early Mars would hve outgassed an atmosphere of CO2 and H2O ...
... likely that a significant amount of water has been lost due to Mars's small size and lack of magnetosphere. So a northern ocean of water is certainly reasonable. There is evidence of a significant amount of water on Mars until 2-3 Gyr ago. Early Mars would hve outgassed an atmosphere of CO2 and H2O ...
First Exam - University of Iowa Astrophysics
... (d) an imaginary point on the celestial sphere which we see as straight overhead (e) an imaginary line of the sky, defined by the right ascension = 0 hours 18. Which of the following planets is most similar to the Earth in mass and diameter? (a) Venus ∗ (b) Jupiter (c) Saturn (d) Uranus (e) Mercury ...
... (d) an imaginary point on the celestial sphere which we see as straight overhead (e) an imaginary line of the sky, defined by the right ascension = 0 hours 18. Which of the following planets is most similar to the Earth in mass and diameter? (a) Venus ∗ (b) Jupiter (c) Saturn (d) Uranus (e) Mercury ...
The Milky Way Galaxy
... What is the ultimate origin of the elements heavier than helium that make up your body? (a) They were present when the Universe was created. (b) They were created in low mass (< 8 solar mass) stars ...
... What is the ultimate origin of the elements heavier than helium that make up your body? (a) They were present when the Universe was created. (b) They were created in low mass (< 8 solar mass) stars ...
Jupiter`s Relative Size
... reasons why it might be useful to present this kind of "false advertising." When making solar system models, sometimes the planets and their moons are not quite to scale. For example, Jupiter should be about 11 times bigger by diameter (1400 times bigger by volume) than Earth, but in diagrams, the t ...
... reasons why it might be useful to present this kind of "false advertising." When making solar system models, sometimes the planets and their moons are not quite to scale. For example, Jupiter should be about 11 times bigger by diameter (1400 times bigger by volume) than Earth, but in diagrams, the t ...
Review Quiz No. 1
... the stars as today. be in the full moon position. have the same position with respect to the center of our Milky Way. ...
... the stars as today. be in the full moon position. have the same position with respect to the center of our Milky Way. ...
Chapter 25 Our Solar System - Information Technology Florida Wing
... light when viewed with the naked eye. When viewed in the telescope, it shows up as a predominantly reddishcolored disk with distinct markings. This color is due to the rock and dust covering the surface of Mars. It has been analyzed and found to have a high iron content, so it has a rusty look. The ...
... light when viewed with the naked eye. When viewed in the telescope, it shows up as a predominantly reddishcolored disk with distinct markings. This color is due to the rock and dust covering the surface of Mars. It has been analyzed and found to have a high iron content, so it has a rusty look. The ...
Jovian Planets and Satellites
... Jovian vs. Terrestrial • Density: Jovian, 1 to 2; Terrestrial, 3 to 5 • Composition: Jovian, hydrogen + helium; Terrestrial, rocks + metals • State: Jovian, liquids + gases; Terrestrial, solids + plastics • Jovian larger than Terrestrial ...
... Jovian vs. Terrestrial • Density: Jovian, 1 to 2; Terrestrial, 3 to 5 • Composition: Jovian, hydrogen + helium; Terrestrial, rocks + metals • State: Jovian, liquids + gases; Terrestrial, solids + plastics • Jovian larger than Terrestrial ...
PC2491 Examples 2
... An H1 cloud in the galactic plane at l=30o is observed to have a velocity relative to the local standard of rest of +80 km s-1. Assume the galactic rotation curve is flat with an amplitude of 220 km s-1 , and that Ro = 8.2 kpc and estimate the two possible distances to this cloud. (4) Estimate the m ...
... An H1 cloud in the galactic plane at l=30o is observed to have a velocity relative to the local standard of rest of +80 km s-1. Assume the galactic rotation curve is flat with an amplitude of 220 km s-1 , and that Ro = 8.2 kpc and estimate the two possible distances to this cloud. (4) Estimate the m ...
Chapter 2 Discovering the Universe for Yourself
... Summary: The Real Reason for Seasons • Earth’s axis points in the same direction (to Polaris) all year round, so its orientation relative to the Sun changes as Earth orbits the Sun. • Summer occurs in your hemisphere when sunlight hits it more directly; winter occurs when the sunlight is less direc ...
... Summary: The Real Reason for Seasons • Earth’s axis points in the same direction (to Polaris) all year round, so its orientation relative to the Sun changes as Earth orbits the Sun. • Summer occurs in your hemisphere when sunlight hits it more directly; winter occurs when the sunlight is less direc ...
Astronomy Lecture 1a
... ___ 74. A body moving at escape velocity would move in the form of a A.circle B.ellipse C.parabola D.hyperbola ___ 75. ? made very accurate astronomical observations; his data were used by Kepler to formulate theories of planetary motion. A.Galileo B.Brahe C.Newton D.Ptolemy E.Copernicus ___ 76. Gam ...
... ___ 74. A body moving at escape velocity would move in the form of a A.circle B.ellipse C.parabola D.hyperbola ___ 75. ? made very accurate astronomical observations; his data were used by Kepler to formulate theories of planetary motion. A.Galileo B.Brahe C.Newton D.Ptolemy E.Copernicus ___ 76. Gam ...
Saturn
... • Second largest planet – with rings • Atmosphere composition similar to Jupiter, but less metallic H2 • Density ~ 0.69 g/cc (could float on water!) • Twice as far from the Sun as Jupiter • Surface Temp = 95 K • Deep clouds, strong winds (1700 Km/hr) • Intrinsic magnetic field is 1000 x Earth’s (but ...
... • Second largest planet – with rings • Atmosphere composition similar to Jupiter, but less metallic H2 • Density ~ 0.69 g/cc (could float on water!) • Twice as far from the Sun as Jupiter • Surface Temp = 95 K • Deep clouds, strong winds (1700 Km/hr) • Intrinsic magnetic field is 1000 x Earth’s (but ...
Теория относительности и реальность
... oscillation periods of 14 days, 0.5 years and 18.6 years are also consistent with observations. 24 ...
... oscillation periods of 14 days, 0.5 years and 18.6 years are also consistent with observations. 24 ...
Spacebook Profiles McGill
... In November, we started studying about space! We went on different websites to learn more information about planets and the moon. Then some coaches came and we learned about the phases of the moon. A couple weeks later we looked at some slide shows of the planets. In January, we started thinking abo ...
... In November, we started studying about space! We went on different websites to learn more information about planets and the moon. Then some coaches came and we learned about the phases of the moon. A couple weeks later we looked at some slide shows of the planets. In January, we started thinking abo ...
File - Mr. Gray`s Class
... big from earth because it is so close to us! • Why do we study the sun? – Sun is very important to earth – without its heat and light, we would not be able to survive! – Gives us the Seasons – Its gravity keeps us, and the other planets, in orbit – It is the nearest star to us! We study it to learn ...
... big from earth because it is so close to us! • Why do we study the sun? – Sun is very important to earth – without its heat and light, we would not be able to survive! – Gives us the Seasons – Its gravity keeps us, and the other planets, in orbit – It is the nearest star to us! We study it to learn ...
03_LectureOutlines
... Earth is stationary in the geocentric model but moves around Sun in Sun-centered model. Retrograde motion is real (planets really go backward) in geocentric model but only apparent (planets don’t really turn around) in Suncentered model. Stellar parallax is expected in the Sun-centered model but not ...
... Earth is stationary in the geocentric model but moves around Sun in Sun-centered model. Retrograde motion is real (planets really go backward) in geocentric model but only apparent (planets don’t really turn around) in Suncentered model. Stellar parallax is expected in the Sun-centered model but not ...
The Life Cycle of the Stars
... Like all stars, our Sun was formed from a cloud of hydrogen gas and dust that almost certainly included the ashes from an earlier star gone supernova. In its death throes, it created elements heavier than iron that our solar system inherited. Gravity pulled the cloud together into a giant ball. When ...
... Like all stars, our Sun was formed from a cloud of hydrogen gas and dust that almost certainly included the ashes from an earlier star gone supernova. In its death throes, it created elements heavier than iron that our solar system inherited. Gravity pulled the cloud together into a giant ball. When ...
Stellar Evolution
... Without the outward pressure generated from these reactions to counteract the force of gravity, the outer layers of the star begin to collapse inward. Just as during formation, when the material contracts, the temperature and pressure increase. This newly generated heat temporarily counteracts the f ...
... Without the outward pressure generated from these reactions to counteract the force of gravity, the outer layers of the star begin to collapse inward. Just as during formation, when the material contracts, the temperature and pressure increase. This newly generated heat temporarily counteracts the f ...
The Milky Way
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
ASTR2050 Spring 2005 • In this class we will cover: Brief review
... Interlude: Naming stars Ordinary stars Greek letter (in order of brightness) then constellation e.g. α-Orionis is brightest star in Orion (aka Betelgeuse) δ-Cephei is fourth brightest star in Cepheus Variable stars Listed in order of discovery, starting with “R”, then “S” and on through “Z”, then “ ...
... Interlude: Naming stars Ordinary stars Greek letter (in order of brightness) then constellation e.g. α-Orionis is brightest star in Orion (aka Betelgeuse) δ-Cephei is fourth brightest star in Cepheus Variable stars Listed in order of discovery, starting with “R”, then “S” and on through “Z”, then “ ...
Exoplanet, 51 Pegasi b, Solar System, VLT, La Silla. ESOcast
... richest planetary system yet. The system, located over 120 light-years away around the Sun-like star HD 10180, contains at least five exoplanets. There is also tantalising evidence that two more planets may be present in this system, one of which would have the lowest mass ever found. ...
... richest planetary system yet. The system, located over 120 light-years away around the Sun-like star HD 10180, contains at least five exoplanets. There is also tantalising evidence that two more planets may be present in this system, one of which would have the lowest mass ever found. ...
FL_HMH_G10 Selection Test FSA Style No Answer Key
... Revising and Editing Directions Read the passage and answer the questions that follow. (1) Have you ever wished that you had longer school breaks during holidays? (2) There is a way that you can. (3) That way is year-round schools. (4) It would not only provide longer holiday breaks, but it also wo ...
... Revising and Editing Directions Read the passage and answer the questions that follow. (1) Have you ever wished that you had longer school breaks during holidays? (2) There is a way that you can. (3) That way is year-round schools. (4) It would not only provide longer holiday breaks, but it also wo ...
Inti didn`t form in the X wind (and neither did most CAIs)
... "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can be transported outward. Enables outward transport of crystalline silicates and even CAI-like materials produced in inner solar system, out ...
... "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can be transported outward. Enables outward transport of crystalline silicates and even CAI-like materials produced in inner solar system, out ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.