![Astronomy Powerpoint](http://s1.studyres.com/store/data/002306335_1-8d38b3e2634a947da7524fd8e3dc507b-300x300.png)
Astronomy Powerpoint
... Mercury closest planet to the sun, it takes 59 days to make one rotation but only 88 days to orbit the Sun. That means that there are fewer than 2 days in a year! Venus is the brightest planet in our sky. It is called Earth’s sister planet because it is a similar size. Venus is hotter than Mercury ...
... Mercury closest planet to the sun, it takes 59 days to make one rotation but only 88 days to orbit the Sun. That means that there are fewer than 2 days in a year! Venus is the brightest planet in our sky. It is called Earth’s sister planet because it is a similar size. Venus is hotter than Mercury ...
Universe Jeopardy2011
... Middle of its life, it formed 4.6 billion years ago and it will live for another 4 billion years ...
... Middle of its life, it formed 4.6 billion years ago and it will live for another 4 billion years ...
mary - Cal State LA - Instructional Web Server
... Third planet from the Sun Only planet where life exists Home to humans Largest of the inner planets Only planet that has liquid water at its surface Its atmosphere helps protect life on Earth Also known as the Blue Planet ...
... Third planet from the Sun Only planet where life exists Home to humans Largest of the inner planets Only planet that has liquid water at its surface Its atmosphere helps protect life on Earth Also known as the Blue Planet ...
Solar System - Spring Branch ISD
... The four large planets beyond the asteroid ___________ belt are Jupiter called gas giants. These planets are _______, Neptune These planets ________, Saturn _________, Uranus and ________. are gaseous in nature, composed of mostly hydrogen and helium ____________________. ...
... The four large planets beyond the asteroid ___________ belt are Jupiter called gas giants. These planets are _______, Neptune These planets ________, Saturn _________, Uranus and ________. are gaseous in nature, composed of mostly hydrogen and helium ____________________. ...
Chapter 2
... Chapter 2 Test Study Guide 1. The following diagram shows the relative position of some galaxies (2.5 Mly = 2.5 million light years). The location labeled "X" is the observation point. ...
... Chapter 2 Test Study Guide 1. The following diagram shows the relative position of some galaxies (2.5 Mly = 2.5 million light years). The location labeled "X" is the observation point. ...
Life on Other Planets
... There are about 500-600 known planets circling around other stars (other than the Sun). Many are likely to be barren (too hot or too cold), but some may be `habitable . Habitable = a narrow region of orbits around a star where water can be in liquid form Future NASA (and other) missions may establis ...
... There are about 500-600 known planets circling around other stars (other than the Sun). Many are likely to be barren (too hot or too cold), but some may be `habitable . Habitable = a narrow region of orbits around a star where water can be in liquid form Future NASA (and other) missions may establis ...
Origin and Age of the Universe
... 2. What do the majority of scientists believe was the origin of our Universe? ...
... 2. What do the majority of scientists believe was the origin of our Universe? ...
Chapter 8 Survey of Solar Systems
... Rocky Asteroids - mostly found between the orbits of Mars and Jupiter ...
... Rocky Asteroids - mostly found between the orbits of Mars and Jupiter ...
notes
... • In 2001, sodium was detected in the atmosphere of HD 209458 b. • In 2008, water, carbon monoxide, carbon dioxide and methane were detected in the atmosphere of HD 189733 b. • In 2013, water was detected in the atmospheres of HD 209458 b, XO-1b, WASP-12b, WASP-17b, and WASP-19b. • In July 2014, NAS ...
... • In 2001, sodium was detected in the atmosphere of HD 209458 b. • In 2008, water, carbon monoxide, carbon dioxide and methane were detected in the atmosphere of HD 189733 b. • In 2013, water was detected in the atmospheres of HD 209458 b, XO-1b, WASP-12b, WASP-17b, and WASP-19b. • In July 2014, NAS ...
04 Aug 2007
... dwarfs" that are smaller the sun, giving off dim red light steadily for tens of billions of years, far longer than our sun's lifetime. Red dwarfs seem more likely than sun-like stars to be "hosts" for life; they constitute 80 percent of the stars near Earth. Now astronomers, using the frequency-shif ...
... dwarfs" that are smaller the sun, giving off dim red light steadily for tens of billions of years, far longer than our sun's lifetime. Red dwarfs seem more likely than sun-like stars to be "hosts" for life; they constitute 80 percent of the stars near Earth. Now astronomers, using the frequency-shif ...
Chapter27
... having such a limited discussion of life in the Universe was that I thought the subject was still very speculative. For example, at that time, only a little more than 10 years ago, we didn’t yet have any evidence for planetary systems orbiting ordinary stars other than the Sun. A lot has happened in ...
... having such a limited discussion of life in the Universe was that I thought the subject was still very speculative. For example, at that time, only a little more than 10 years ago, we didn’t yet have any evidence for planetary systems orbiting ordinary stars other than the Sun. A lot has happened in ...
practice exam #1
... 22. Which type of spectrum is most often used to determine the composition of a star? a. Dark-line b. Bright-line c. Continuous d. All of the above 23. The constellation Orion contains a red star and a blue star. Which star is hotter? ____________ 24. If Star A is 10 times hotter than Star B, then S ...
... 22. Which type of spectrum is most often used to determine the composition of a star? a. Dark-line b. Bright-line c. Continuous d. All of the above 23. The constellation Orion contains a red star and a blue star. Which star is hotter? ____________ 24. If Star A is 10 times hotter than Star B, then S ...
Earth Science Chapter Two: What Makes Up the Solar System
... 6. How did the inner planets get their name? 7. Why would astronauts not be able to leave their spacecrafts on Mercury, even with spacesuits? 8. What makes Venus extremely poisonous to humans? 9. What are the two basic features that make life possible on Earth? 10. What do Mars and Earth both have i ...
... 6. How did the inner planets get their name? 7. Why would astronauts not be able to leave their spacecrafts on Mercury, even with spacesuits? 8. What makes Venus extremely poisonous to humans? 9. What are the two basic features that make life possible on Earth? 10. What do Mars and Earth both have i ...
5th Grade Solar System - Mrs. Kellogg`s 5th Grade Class
... *largest body in our system Center of our solar system – all planets orbit around the sun Nuclear Fusion- protons combine to form a helium nucleus-energy released *Mostly composed of (made up of) Hydrogen and Helium ...
... *largest body in our system Center of our solar system – all planets orbit around the sun Nuclear Fusion- protons combine to form a helium nucleus-energy released *Mostly composed of (made up of) Hydrogen and Helium ...
Physics Section 7.3 Apply Kepler*s Laws of Planetary
... Apply Kepler’s Laws of Planetary Motion The Polish astronomer Nicolas Copernicus was the first to correctly place the sun at the center of our solar system. ...
... Apply Kepler’s Laws of Planetary Motion The Polish astronomer Nicolas Copernicus was the first to correctly place the sun at the center of our solar system. ...
Sun, Stars and Planets [Level 2] 2015
... • Describe the current state of planets and smaller bodies in our own Solar System, including internal structure, atmospheric structure and surface temperature • Appreciate the wide range of physics and chemistry that determines the current state of planetary and small body surfaces • Predict surfac ...
... • Describe the current state of planets and smaller bodies in our own Solar System, including internal structure, atmospheric structure and surface temperature • Appreciate the wide range of physics and chemistry that determines the current state of planetary and small body surfaces • Predict surfac ...
Extra-Solar Planets
... (1)A "planet” is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit. (1)A "dwarf planet" is a celest ...
... (1)A "planet” is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit. (1)A "dwarf planet" is a celest ...
Earth in the Solar System - San Diego Unified School District
... c. Know how to use _________________________________ and ___________________________________ as measures of _________________________ between the _______________, ________________ and ____________________ 8. What is a light year (LY)? 9. What is an Astronomical Unit (AU)? 10. Which measurement woul ...
... c. Know how to use _________________________________ and ___________________________________ as measures of _________________________ between the _______________, ________________ and ____________________ 8. What is a light year (LY)? 9. What is an Astronomical Unit (AU)? 10. Which measurement woul ...
First detection of a planet that survived the red giant expansion of its
... “This discovery occurred almost by chance” Silvotti continues. «We did know that in principle we could find a planet as it is commonly believed that about 5% of the stars have planets, but our primary goal was different: to study the periodicity of the light emission of V 391 Pegasi, which is a v ...
... “This discovery occurred almost by chance” Silvotti continues. «We did know that in principle we could find a planet as it is commonly believed that about 5% of the stars have planets, but our primary goal was different: to study the periodicity of the light emission of V 391 Pegasi, which is a v ...
Novel technique water on exoplanets
... search for ,water on hundreds of worlds without the need for space-basedtelescopes. Since the early 1990s scientists have found almost 1000 planets in orbit around other stars.These so-calledexoplanets are mostly much larger than the Earth and many are much closer to their stars than we are to the S ...
... search for ,water on hundreds of worlds without the need for space-basedtelescopes. Since the early 1990s scientists have found almost 1000 planets in orbit around other stars.These so-calledexoplanets are mostly much larger than the Earth and many are much closer to their stars than we are to the S ...
5-SolarSystem
... 1. Planets and their satellites all lie in the same plane - the excliptic – to within a few degrees 2. Sun’s rotational equator aligned with ecliptic 3. Planetary orbits are nearly circular ellipses 4. Planets all revolve in same W -> E direction 5. Sun and planets all rotate on axes in same W –E di ...
... 1. Planets and their satellites all lie in the same plane - the excliptic – to within a few degrees 2. Sun’s rotational equator aligned with ecliptic 3. Planetary orbits are nearly circular ellipses 4. Planets all revolve in same W -> E direction 5. Sun and planets all rotate on axes in same W –E di ...
Year 7 Gravity and Space
... The speed and direction of galaxies can be measured using light. It show that the Universe is expanding ...
... The speed and direction of galaxies can be measured using light. It show that the Universe is expanding ...
Day 1 Notes
... Our new unit is Earth’s Role in Space, where do you think Earth fits in space? Is it a large or small part of space? Is it unique to other aspects of space? ...
... Our new unit is Earth’s Role in Space, where do you think Earth fits in space? Is it a large or small part of space? Is it unique to other aspects of space? ...
Planetary habitability
![](https://en.wikipedia.org/wiki/Special:FilePath/The_Earth_seen_from_Apollo_17.jpg?width=300)
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.