Astronomy
... The brightest stars have the lowest number The dimmest stars have the highest number ...
... The brightest stars have the lowest number The dimmest stars have the highest number ...
Chapter 29 Stellar Evolution
... Absolute Magnitude: Also called luminosity How it would look if we were 10 parsecs away. ...
... Absolute Magnitude: Also called luminosity How it would look if we were 10 parsecs away. ...
Document
... • As of last Friday, 429 planets have been detected outside our solar system (http://exoplanets.org/) Most of these have a<1 AU and masses >MJupiter ...
... • As of last Friday, 429 planets have been detected outside our solar system (http://exoplanets.org/) Most of these have a<1 AU and masses >MJupiter ...
Our Solar System
... Earth, and Mars) are small and rocky with iron cores The four outer planets – (Jupiter, Saturn, ...
... Earth, and Mars) are small and rocky with iron cores The four outer planets – (Jupiter, Saturn, ...
Hunting for Extrasolar Planets: Methods and Results
... Big surprise in 1995: Radial velocity curve of star 51 Pegasi shows large radial velocity amplitude and orbital period of days, not years! Must be giant planet very close to its parent star. ...
... Big surprise in 1995: Radial velocity curve of star 51 Pegasi shows large radial velocity amplitude and orbital period of days, not years! Must be giant planet very close to its parent star. ...
Notes
... E. _________________________ holds the solar system together 1. We usually think of gravity as the ____________________ that pulls us to the Earth. 2. True definition of gravity is the attractive force between ____________. 3. The more _________ an object has the ________ its gravitational pull. a. ...
... E. _________________________ holds the solar system together 1. We usually think of gravity as the ____________________ that pulls us to the Earth. 2. True definition of gravity is the attractive force between ____________. 3. The more _________ an object has the ________ its gravitational pull. a. ...
New Stars, New Planets?
... solar system; the new planets under consideration are 500,000 times more distant than Pluto. Astronomers look for small, regular variations in the Doppler shifts of light emitted by stars. Such changes indicate a back and forth "wobbling" of the star's motion, perhaps due to gravity effects from an ...
... solar system; the new planets under consideration are 500,000 times more distant than Pluto. Astronomers look for small, regular variations in the Doppler shifts of light emitted by stars. Such changes indicate a back and forth "wobbling" of the star's motion, perhaps due to gravity effects from an ...
Topic 3 – Waves and the Universe
... o Space landers – these land and sample rocks and soil Much of the research into forms of life in our Solar System has been done on Mars because: o 1. Space probes orbiting Mars have photographed channels that were probably created millions/billions of years ago by flowing water All life as we kno ...
... o Space landers – these land and sample rocks and soil Much of the research into forms of life in our Solar System has been done on Mars because: o 1. Space probes orbiting Mars have photographed channels that were probably created millions/billions of years ago by flowing water All life as we kno ...
Topic 3 notes - WordPress.com
... o Space landers – these land and sample rocks and soil Much of the research into forms of life in our Solar System has been done on Mars because: o 1. Space probes orbiting Mars have photographed channels that were probably created millions/billions of years ago by flowing water All life as we kno ...
... o Space landers – these land and sample rocks and soil Much of the research into forms of life in our Solar System has been done on Mars because: o 1. Space probes orbiting Mars have photographed channels that were probably created millions/billions of years ago by flowing water All life as we kno ...
Day-26
... Most planetary systems found to date do not resemble ours. Researhers have also found mini-Neptunes and super-Earths. Planet locations, orbital inclination angles, and orbital directions are different than our Solar System. ...
... Most planetary systems found to date do not resemble ours. Researhers have also found mini-Neptunes and super-Earths. Planet locations, orbital inclination angles, and orbital directions are different than our Solar System. ...
The Solar System
... • Jupiter is the largest planet in the solar system, More than 1300 earths could fit inside it. • It has winds that go up to 400mph. • Jupiter is the 5th planet away from the sun{466 million miles} • It has 67 moons. • Jupiter's clouds are no more then 50 km in thickness. •Jupiter is one of the sola ...
... • Jupiter is the largest planet in the solar system, More than 1300 earths could fit inside it. • It has winds that go up to 400mph. • Jupiter is the 5th planet away from the sun{466 million miles} • It has 67 moons. • Jupiter's clouds are no more then 50 km in thickness. •Jupiter is one of the sola ...
688 Chapter 21 Review - District 196 e
... Venus (mostly CO2). Why is Mars so cold while Venus is so hot? ...
... Venus (mostly CO2). Why is Mars so cold while Venus is so hot? ...
PowerPoint - Chandra X
... The young Sun-like stars in Orion produce violent X-ray outbursts, or flares, that are much more frequent and energetic than anything seen today from our Sun. The range of flare energies is large, with some of the stars producing flares that are a hundred times larger than others. The different flar ...
... The young Sun-like stars in Orion produce violent X-ray outbursts, or flares, that are much more frequent and energetic than anything seen today from our Sun. The range of flare energies is large, with some of the stars producing flares that are a hundred times larger than others. The different flar ...
Astronomy
... The atmosphere is 95% CO2. The planet has extreme temperature differences…70oF during the day and -225oF at night! Mars also is tilted like Earth, so it too has seasons Location we are planning on making a space station in the near future Moons: two Day: 24.7 Earth hours Year: 1.9 Earth Years (693 E ...
... The atmosphere is 95% CO2. The planet has extreme temperature differences…70oF during the day and -225oF at night! Mars also is tilted like Earth, so it too has seasons Location we are planning on making a space station in the near future Moons: two Day: 24.7 Earth hours Year: 1.9 Earth Years (693 E ...
Picture Match Words Giant Planet Phase Habitable Zone Fluctuate
... A ___________________is established by different types of stars; this zone allows acceptable temperatures for liquid water to exist. ...
... A ___________________is established by different types of stars; this zone allows acceptable temperatures for liquid water to exist. ...
Survey of the Solar System - USU Department of Physics
... • Also, can tell if the exoplanet has an atmosphere! – Starlight modified by atmosphere (if it exists) on limb of planet » New absorption lines not seen in the star itself » Tells chemical composition of any gases that are present ...
... • Also, can tell if the exoplanet has an atmosphere! – Starlight modified by atmosphere (if it exists) on limb of planet » New absorption lines not seen in the star itself » Tells chemical composition of any gases that are present ...
exercise 3
... Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and ice. Pluto does not belong to either group, and there is an ongoing debate as to whether Pluto should be categorized as a major ...
... Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and ice. Pluto does not belong to either group, and there is an ongoing debate as to whether Pluto should be categorized as a major ...
Lecture 34 – Exobiology- Life Elsewhere in the Universe
... relatively constant for a very long time. ...
... relatively constant for a very long time. ...
the earth and other planets
... Diameter =142.8X103km ~5.2AU from the sun Orbit =11.9 earth years 1 day =0.41 earth days ~61 moons; Ganymede is larger than Mercury; thin ring • Density =1.3g/ml • Gas giant planet mainly of Composite image of Jupiter by the Cassini probe. The black dot is the hydrogen and helium. shadow of Europa. ...
... Diameter =142.8X103km ~5.2AU from the sun Orbit =11.9 earth years 1 day =0.41 earth days ~61 moons; Ganymede is larger than Mercury; thin ring • Density =1.3g/ml • Gas giant planet mainly of Composite image of Jupiter by the Cassini probe. The black dot is the hydrogen and helium. shadow of Europa. ...
S E N S ` 2 0 0 6
... leading idea is that of planetary migration. This idea is that planets must be able to migrate from their initial orbit to one nearer their star, by any of several possible physical processes, such as orbital friction while the protoplanetary disk is still full of hydrogen and helium gas. ...
... leading idea is that of planetary migration. This idea is that planets must be able to migrate from their initial orbit to one nearer their star, by any of several possible physical processes, such as orbital friction while the protoplanetary disk is still full of hydrogen and helium gas. ...
Our Solar System Do Nows and Discussions
... How does the speed of rotation change with mass? It increases with mass, Jovian rotate extremely fast, creating the unique cloud lines How does the speed of revolution change as we enter the perihelion? The planet will speed up when closest to the sun (observed by Kepler) What are some of the ways t ...
... How does the speed of rotation change with mass? It increases with mass, Jovian rotate extremely fast, creating the unique cloud lines How does the speed of revolution change as we enter the perihelion? The planet will speed up when closest to the sun (observed by Kepler) What are some of the ways t ...
Space – Astronomy Review
... The Universe is everything that exists, including all matter and energy everywhere. The study of what is beyond Earth is called Astronomy. Groups of stars that form shapes or patterns are called constellations. The Solar System consists of our Sun and all the objects that travel around it. Objects t ...
... The Universe is everything that exists, including all matter and energy everywhere. The study of what is beyond Earth is called Astronomy. Groups of stars that form shapes or patterns are called constellations. The Solar System consists of our Sun and all the objects that travel around it. Objects t ...
Sizing-up the planets activity
... paper models of each planet and the sun using a given scale. Materials Needed: 2 sheets regular size poster paper drawing compass (metric) scissors string (22 cm length) pencil string or yarn (13.28 m length) ...
... paper models of each planet and the sun using a given scale. Materials Needed: 2 sheets regular size poster paper drawing compass (metric) scissors string (22 cm length) pencil string or yarn (13.28 m length) ...
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.