Life in the Universe
... Constraints on star systems: 1. Old enough to allow time for evolution (rules out high-mass stars ~1%) 2. Need to have stable orbits (might rule out binary/multiple star systems ~50%) 3. Size of habitable zone: region where a planet of the right size could support liquid water ...
... Constraints on star systems: 1. Old enough to allow time for evolution (rules out high-mass stars ~1%) 2. Need to have stable orbits (might rule out binary/multiple star systems ~50%) 3. Size of habitable zone: region where a planet of the right size could support liquid water ...
Chapter 9 Lesson 2
... o The inner planets are those closest to the sun; they are Mercury, Venus, Earth, and Mars. These planets are alike in many ways. They all have rocky surfaces and are smaller than most of the outer planets. Also, none of the inner planets has more than two moons. o There are also many differences—Me ...
... o The inner planets are those closest to the sun; they are Mercury, Venus, Earth, and Mars. These planets are alike in many ways. They all have rocky surfaces and are smaller than most of the outer planets. Also, none of the inner planets has more than two moons. o There are also many differences—Me ...
Conversations with the Earth
... • You need “metals” to make planets –Metals are elements heavier in mass than helium ...
... • You need “metals” to make planets –Metals are elements heavier in mass than helium ...
Sun, Earth and Moon Model
... Imagine a world where each season lasts over 100 years and you have three shadows at once. Now meet HD 131399ab, a newly discovered exo-planet with these exact quirks! (An exo-planet is a planet orbiting a distant star.) The strange new world was discovered orbiting a star in a triple star system. T ...
... Imagine a world where each season lasts over 100 years and you have three shadows at once. Now meet HD 131399ab, a newly discovered exo-planet with these exact quirks! (An exo-planet is a planet orbiting a distant star.) The strange new world was discovered orbiting a star in a triple star system. T ...
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 ...
Kepler 452b:Potentially Earth like planet
... July 2015: Astronomers hunting for another Earth have found what may be the closest match yet, a potentially rocky planet circling its star at the same distance as the Earth orbits the Sun. Kepler-452b is an exoplanet orbiting the G-class star Kepler-452. It was identified by the Kepler space telesc ...
... July 2015: Astronomers hunting for another Earth have found what may be the closest match yet, a potentially rocky planet circling its star at the same distance as the Earth orbits the Sun. Kepler-452b is an exoplanet orbiting the G-class star Kepler-452. It was identified by the Kepler space telesc ...
Astronomy Review fall 2013
... Red Shifts are used to show that objects are moving away from the center of the Universe, thus proving that objects in space are still moving outward since the Big Bang occurred. ...
... Red Shifts are used to show that objects are moving away from the center of the Universe, thus proving that objects in space are still moving outward since the Big Bang occurred. ...
Name:
... Earth’s atmosphere. When they strike the Earth’s surface they are called ________________________. A ________________ is a ball of ice, rock, and gas that has an orbit which brings it really close to the sun on one end, and sometimes much farther than Pluto on the other end. Which one of these objec ...
... Earth’s atmosphere. When they strike the Earth’s surface they are called ________________________. A ________________ is a ball of ice, rock, and gas that has an orbit which brings it really close to the sun on one end, and sometimes much farther than Pluto on the other end. Which one of these objec ...
Brobo_solarsystem_faceoff
... Created amazingly accurate predictions on the movement of different celestile bodies Created precise measurements of the planets and over 700 stars Discovered Jupiter’s four largest satellites Significantly improved the understanding of Mars’ orbit Discovered the mysterious “Planet X” who’s exsistan ...
... Created amazingly accurate predictions on the movement of different celestile bodies Created precise measurements of the planets and over 700 stars Discovered Jupiter’s four largest satellites Significantly improved the understanding of Mars’ orbit Discovered the mysterious “Planet X” who’s exsistan ...
Solar_System_Vocab_1
... Outer planet – any of the four planets farthest from the Sun (Jupiter, Saturn, Uranus, and Neptune). ...
... Outer planet – any of the four planets farthest from the Sun (Jupiter, Saturn, Uranus, and Neptune). ...
The inner planets
... The solar system includes the Sun and all the objects that orbit around it due to its gravity. This includes things such as planets, comets, asteroids, meteoroids and moons. There are eight planets in the Solar System (4 inner planets and 4 outer planets). The inner planets (also known as terrestria ...
... The solar system includes the Sun and all the objects that orbit around it due to its gravity. This includes things such as planets, comets, asteroids, meteoroids and moons. There are eight planets in the Solar System (4 inner planets and 4 outer planets). The inner planets (also known as terrestria ...
Circumstellar habitable zone
In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the region around a star within which planetary-mass objects with sufficient atmospheric pressure can support liquid water at their surfaces. The bounds of the CHZ are calculated using the known requirements of Earth's biosphere, its position in the Solar System and the amount of radiant energy it receives from the Sun. Due to the importance of liquid water to life as it exists on Earth, the nature of the CHZ and the objects within is believed to be instrumental in determining the scope and distribution of Earth-like extraterrestrial life and intelligence.The habitable zone is also called the Goldilocks zone, a metaphor of the children's fairy tale of Goldilocks and the Three Bears, in which a little girl chooses from sets of three items, ignoring the ones that are too extreme (large or small, hot or cold, etc.), and settling on the one in the middle, which is ""just right"".Since the concept was first presented in 1953, stars have been confirmed to possess a CHZ planet, including some systems that consist of multiple CHZ planets. Most such planets, being super-Earths or gas giants, are more massive than Earth, because such planets are easier to detect. On November 4, 2013, astronomers reported, based on Kepler 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 in the Milky Way. 11 billion of these may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists. The CHZ is also of particular interest to the emerging field of habitability of natural satellites, because planetary-mass moons in the CHZ might outnumber planets.In subsequent decades, the CHZ concept began to be challenged as a primary criterion for life. Since the discovery of evidence for extraterrestrial liquid water, substantial quantities of it are now believed to occur outside the circumstellar habitable zone. Sustained by other energy sources, such as tidal heating or radioactive decay or pressurized by other non-atmospheric means, the basic conditions for water-dependent life may be found even in interstellar space, on rogue planets, or their moons. In addition, other circumstellar zones, where non-water solvents favorable to hypothetical life based on alternative biochemistries could exist in liquid form at the surface, have been proposed.