astronomy study guide
... What characterizes the Jovian planets and the terrestrial planets? What is the difference between asteroids, comets, and meteoroids? Beyond our Solar System What is the difference between apparent magnitude and absolute magnitude? How does this relate to a Hertzsprung-Russell diagram? Descri ...
... What characterizes the Jovian planets and the terrestrial planets? What is the difference between asteroids, comets, and meteoroids? Beyond our Solar System What is the difference between apparent magnitude and absolute magnitude? How does this relate to a Hertzsprung-Russell diagram? Descri ...
PowerPoint-presentatie
... A shooting star is a common name for the visible path of a meteorite as it starts to burn when it enters the atmosphere. Question 3 (GG 55) A star/ sun is a ball of burning gas in the middle of a solar system. A sun sends out light and heat. Planets orbit a sun. They don’t send out light, but the ge ...
... A shooting star is a common name for the visible path of a meteorite as it starts to burn when it enters the atmosphere. Question 3 (GG 55) A star/ sun is a ball of burning gas in the middle of a solar system. A sun sends out light and heat. Planets orbit a sun. They don’t send out light, but the ge ...
mlife
... Given the size of the universe, therefore, it would not be a surprise if we find an earth-like planet in the near future. Suppose we do, then the next bigger question is "is there life on that planet?" That is, life as we know it, which starts from DNA and cells, and evolves to more complex forms. T ...
... Given the size of the universe, therefore, it would not be a surprise if we find an earth-like planet in the near future. Suppose we do, then the next bigger question is "is there life on that planet?" That is, life as we know it, which starts from DNA and cells, and evolves to more complex forms. T ...
The Structure of Our Solar System
... Size Small planets are those with a diameter than is equal to or less than 13,000 km. These planets are Mercury, Mars, Earth, Venus and Pluto. Giant planets are classified as those with a diameter greater than 48,000 km. These planets are Neptune Uranus, Jupiter and Saturn. ...
... Size Small planets are those with a diameter than is equal to or less than 13,000 km. These planets are Mercury, Mars, Earth, Venus and Pluto. Giant planets are classified as those with a diameter greater than 48,000 km. These planets are Neptune Uranus, Jupiter and Saturn. ...
Solar System Fundamentals
... • If the average velocity of a molecule is close to the escape velocity of the planet or satellite, then over time it will escape into space. • The effect of this is that hot, light planets or satellites will lose all lighter molecules that they might have had. – Mercury, Moon and all satellites ex ...
... • If the average velocity of a molecule is close to the escape velocity of the planet or satellite, then over time it will escape into space. • The effect of this is that hot, light planets or satellites will lose all lighter molecules that they might have had. – Mercury, Moon and all satellites ex ...
Astronomy HOMEWORK Chapter 8
... Liquid metallic hydrogen is a phase of hydrogen which conducts electricity. Only Jupiter and Saturn contain hydrogen in this form. This form of hydrogen exists only at cool or cold temperatures, and at extreme pressure. No other planet has enough mass to produce enough pressure. The Sun has plenty o ...
... Liquid metallic hydrogen is a phase of hydrogen which conducts electricity. Only Jupiter and Saturn contain hydrogen in this form. This form of hydrogen exists only at cool or cold temperatures, and at extreme pressure. No other planet has enough mass to produce enough pressure. The Sun has plenty o ...
Why Is the Sun a Star
... The Sun is the center of our Solar System. It is so massive that its strong gravity attracts all the planets and their moons, comets, asteroids and meteors into orbit around it. Its light provides Earth with 99% of all the energy used on our planet and we see its reflected light on all the planets a ...
... The Sun is the center of our Solar System. It is so massive that its strong gravity attracts all the planets and their moons, comets, asteroids and meteors into orbit around it. Its light provides Earth with 99% of all the energy used on our planet and we see its reflected light on all the planets a ...
Days and Nights
... During the night, we cannot see the Sun. But the Earth is still spinning on its axis. This means that the stars appear to move from east to west in the sky, just as the Sun does in the day. ...
... During the night, we cannot see the Sun. But the Earth is still spinning on its axis. This means that the stars appear to move from east to west in the sky, just as the Sun does in the day. ...
Homes for life
... From our earlier discussion of planetary temperatures the current HZ in the SS for present-day Earth is between ~0.95-1.6 au. However, there are complications in even the simplistic model: The HZ will move outwards as a star warms during its MS life, so a zone that is continuously habitable will be ...
... From our earlier discussion of planetary temperatures the current HZ in the SS for present-day Earth is between ~0.95-1.6 au. However, there are complications in even the simplistic model: The HZ will move outwards as a star warms during its MS life, so a zone that is continuously habitable will be ...
Day 9 - Ch. 4 -
... it is hotter. Volatile gases are not condensed on the planets and end up condensing in the Jovian planets further out. This is similar to a process in chemical plants called distillation or fractionation. ...
... it is hotter. Volatile gases are not condensed on the planets and end up condensing in the Jovian planets further out. This is similar to a process in chemical plants called distillation or fractionation. ...
Life Beyond our Solar System: Discovering New Planets
... • Therefore a star without a planet would not have this type of spectrographic shifting. • We can measure this shift. ...
... • Therefore a star without a planet would not have this type of spectrographic shifting. • We can measure this shift. ...
Slide 1
... The planet has amass of 0.69 that of Jupiter, but its diameter is 1.32 times larger than that of Jupiter. The planet orbit is 0.047 AU from the star and is very hot : surface temperature of ...
... The planet has amass of 0.69 that of Jupiter, but its diameter is 1.32 times larger than that of Jupiter. The planet orbit is 0.047 AU from the star and is very hot : surface temperature of ...
Astronomy Quiz 2
... objects moving away from Earth shift toward the red end of the spectrum. This wave concept is known as what? a. Reflection of light c. Refraction of light b. Kepler’s empirical laws d. The Doppler effect 7. Which theory do many astronomers believe explains that the universe began with a period of ex ...
... objects moving away from Earth shift toward the red end of the spectrum. This wave concept is known as what? a. Reflection of light c. Refraction of light b. Kepler’s empirical laws d. The Doppler effect 7. Which theory do many astronomers believe explains that the universe began with a period of ex ...
The Solar System - 3rdgrade-libertyschool
... • Jupiter is the 5th planet from the sun and is the largest planet in the Solar System • Jupiter is the first of the Gas planets • Jupiter has 61 known moons!!! ...
... • Jupiter is the 5th planet from the sun and is the largest planet in the Solar System • Jupiter is the first of the Gas planets • Jupiter has 61 known moons!!! ...
Revision on Universe 1-The nearest planet to the sun is Mercury
... 1-The nearest planet to the sun is Mercury,while Neptune is the farthest planet 2-A phenomenon of day and nightsequence results from the rotation of the Earth around its axis ,while the four seasons sequence results from the revolution of Earth around the sun 3-Revolution of Earth around the sun onc ...
... 1-The nearest planet to the sun is Mercury,while Neptune is the farthest planet 2-A phenomenon of day and nightsequence results from the rotation of the Earth around its axis ,while the four seasons sequence results from the revolution of Earth around the sun 3-Revolution of Earth around the sun onc ...
Geocentric vs. Heliocentric
... with Earth at the center. • Objects in space also move in perfect circles. ...
... with Earth at the center. • Objects in space also move in perfect circles. ...
Physical Science Lecture Notes
... C. Lives of Stars 1. Birth of a Star: a. Nebula – a huge gas cloud made up mainly of Hydrogen that collapse down on itself and compresses the gas down into a Protostar b. Star is “born” when the protostar has contracting tight enough for Hydrogen to fuse into Helium, this releases the light and ener ...
... C. Lives of Stars 1. Birth of a Star: a. Nebula – a huge gas cloud made up mainly of Hydrogen that collapse down on itself and compresses the gas down into a Protostar b. Star is “born” when the protostar has contracting tight enough for Hydrogen to fuse into Helium, this releases the light and ener ...
The Stars
... Telescopes magnify the appearance of some distant objects in the sky, including the moon and the planets. The number of stars that can be seen through telescopes is dramatically greater than can be seen by the unaided eye. Planets change their positions against the background of stars. Stars a ...
... Telescopes magnify the appearance of some distant objects in the sky, including the moon and the planets. The number of stars that can be seen through telescopes is dramatically greater than can be seen by the unaided eye. Planets change their positions against the background of stars. Stars a ...
User guide 2 - Finding celestial treasures
... When Jupiter does not lie close to the sun, it is easily visible and is rewarding to view. Jupiter shows a small, slightly flattened disk with noticeable atmospheric bands. It sports up to four starlike moons — the Galilean moons of Io, Europa, Ganymede, and Callisto — lying in a row on either side ...
... When Jupiter does not lie close to the sun, it is easily visible and is rewarding to view. Jupiter shows a small, slightly flattened disk with noticeable atmospheric bands. It sports up to four starlike moons — the Galilean moons of Io, Europa, Ganymede, and Callisto — lying in a row on either side ...
introduction to astronomy phys 271
... Circumpolar Stars or constellations • They never set, 23 hours 56 minute clock ...
... Circumpolar Stars or constellations • They never set, 23 hours 56 minute clock ...
After Dark in Allenspark
... How do we know Ed's got a planet? It's not by seeing the faint planet directly, but by seeing how it knocks Ed off-center. A big planet (10 times more massive than Jupiter) orbits Ed. Ed tugs on the planet, but the planet tugs on Ed a little too, so both Ed and the planet orbit around an imaginary p ...
... How do we know Ed's got a planet? It's not by seeing the faint planet directly, but by seeing how it knocks Ed off-center. A big planet (10 times more massive than Jupiter) orbits Ed. Ed tugs on the planet, but the planet tugs on Ed a little too, so both Ed and the planet orbit around an imaginary p ...
Рабочий лист 1.1
... I don't have many moons – just one. Which planet am I? __________________________________ No matter how hard you look, you'll never find me, Unless you have a telescope to help you see. I was once called a planet, but not anymore. Now I'm just a “Dwarf Planet,” but too important to ignore. Which pla ...
... I don't have many moons – just one. Which planet am I? __________________________________ No matter how hard you look, you'll never find me, Unless you have a telescope to help you see. I was once called a planet, but not anymore. Now I'm just a “Dwarf Planet,” but too important to ignore. Which pla ...
STARS and GALAXIES
... • A large ball of gas held together by gravity that produces tremendous amounts of heat and light. • Some stars are very old and the size of planets or moons, and some no longer emit radiation (no light). ...
... • A large ball of gas held together by gravity that produces tremendous amounts of heat and light. • Some stars are very old and the size of planets or moons, and some no longer emit radiation (no light). ...
6.E.1.2 Credit Recovery
... Earth. The planet revolves around the star Gliese 581, one of the closest stars outside our solar system. Data collected over a number of years shows that Gliese 581 wobbled. This wobble indicates that a planet is orbiting the star. The orbit appears to last about 13 Earth days. The planet is in a r ...
... Earth. The planet revolves around the star Gliese 581, one of the closest stars outside our solar system. Data collected over a number of years shows that Gliese 581 wobbled. This wobble indicates that a planet is orbiting the star. The orbit appears to last about 13 Earth days. The planet is in a r ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently. On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.