Comets, Asteroids, and Meteors
... • Definition: objects that are too small and numerous to be considered planets • Rocky – 75% of all asteroids • Iron (metals) – 7% of all asteroids • Mixed (rock and iron blended) – 18% of all asteroids ...
... • Definition: objects that are too small and numerous to be considered planets • Rocky – 75% of all asteroids • Iron (metals) – 7% of all asteroids • Mixed (rock and iron blended) – 18% of all asteroids ...
Where Are They?
... tl is determined by biochemistry and evolution. t* is the main sequence lifetime of a star. For the Sun, this is 10 Gyr. t* is determined by nuclear fusion timescales. On Earth, tl and t* are about the same. ...
... tl is determined by biochemistry and evolution. t* is the main sequence lifetime of a star. For the Sun, this is 10 Gyr. t* is determined by nuclear fusion timescales. On Earth, tl and t* are about the same. ...
Comets - University of Surrey
... elements in space: hydrogen, carbon, nitrogen, and oxygen. The radicals, for example, of CH, NH, and OH may be broken away from the stable molecules CH4 (methane), NH3 (ammonia), and H2O (water), which may exist as ices or more complex, very cold compounds in the nucleus. Another fact in support of ...
... elements in space: hydrogen, carbon, nitrogen, and oxygen. The radicals, for example, of CH, NH, and OH may be broken away from the stable molecules CH4 (methane), NH3 (ammonia), and H2O (water), which may exist as ices or more complex, very cold compounds in the nucleus. Another fact in support of ...
Space
... 23% helium. The other 2% is oxygen, nitrogen, carbon and silicate dust. Some of this interstellar matter came from exploding stars. Depending on the mass of the star formed from a particular nebula, the star will be sun-like (in terms of mass) or massive. Both types of stars spend most of their live ...
... 23% helium. The other 2% is oxygen, nitrogen, carbon and silicate dust. Some of this interstellar matter came from exploding stars. Depending on the mass of the star formed from a particular nebula, the star will be sun-like (in terms of mass) or massive. Both types of stars spend most of their live ...
The Interstellar Medium (ISM) Part II: Interstellar Gas
... general emptiness of space, but rather deep within GMCs (giant molecular clouds), which may be up to 105 – 106 x the mass of the sun. These clouds are quite cool in the deep interior, so molecules can form and survive there, and are shielded from potentially harmful collisions with energetic photons ...
... general emptiness of space, but rather deep within GMCs (giant molecular clouds), which may be up to 105 – 106 x the mass of the sun. These clouds are quite cool in the deep interior, so molecules can form and survive there, and are shielded from potentially harmful collisions with energetic photons ...
Interstellar Gas
... general emptiness of space, but rather deep within GMCs (giant molecular clouds), which may be up to 105 – 106 x the mass of the sun. These clouds are quite cool in the deep interior, so molecules can form and survive there, and are shielded from potentially harmful collisions with energetic photons ...
... general emptiness of space, but rather deep within GMCs (giant molecular clouds), which may be up to 105 – 106 x the mass of the sun. These clouds are quite cool in the deep interior, so molecules can form and survive there, and are shielded from potentially harmful collisions with energetic photons ...
isml1
... ionisation. Material is mostly molecular, dominant species is H2. Over 60 molecules detected, mostly via radio astronomy. Masses 1 – 500 solar masses, size ~ 1-5 pc Typically can form 1 or a couple of low-mass (solar mass) stars. ...
... ionisation. Material is mostly molecular, dominant species is H2. Over 60 molecules detected, mostly via radio astronomy. Masses 1 – 500 solar masses, size ~ 1-5 pc Typically can form 1 or a couple of low-mass (solar mass) stars. ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
... The Kepler mission has discovered 11 new planetary systems hosting 26 confirmed planets. These discoveries nearly double the number of verified Kepler planets and triple the number of stars known to have more than one planet that transits (passes in front of) its host star. The planets orbit close t ...
... The Kepler mission has discovered 11 new planetary systems hosting 26 confirmed planets. These discoveries nearly double the number of verified Kepler planets and triple the number of stars known to have more than one planet that transits (passes in front of) its host star. The planets orbit close t ...
14_creationism
... be just right to allow intelligent life. The origin of life. This is such an extraordinary event and “achievement”. Perhaps life is so complex that the origin of life is a lot less likely than we think. This is testable. As we search the universe we may be unlikely to find even primitive life. The o ...
... be just right to allow intelligent life. The origin of life. This is such an extraordinary event and “achievement”. Perhaps life is so complex that the origin of life is a lot less likely than we think. This is testable. As we search the universe we may be unlikely to find even primitive life. The o ...
Chapter 25 Teacher Notes
... •A lunar eclipse occurs when the Earth between the moon and the sun when the moon is in the full moon stage. The shadow of Earth falls on the moon. •Lunar eclipses, unlike solar eclipses, can be seen from all over the Earth. Tides on Earth •Cased by differences in the moon’s gravitational pull on Ea ...
... •A lunar eclipse occurs when the Earth between the moon and the sun when the moon is in the full moon stage. The shadow of Earth falls on the moon. •Lunar eclipses, unlike solar eclipses, can be seen from all over the Earth. Tides on Earth •Cased by differences in the moon’s gravitational pull on Ea ...
Another Earth in the Universe
... and therefore have a well-defined surface. They have a greater density and a smaller size than the gaseous planets. The latter are much larger than the rocky planets (to create the equivalent of Jupiter, imagine you have to align 11 Earths on its diameter), they are made of a small solid central cor ...
... and therefore have a well-defined surface. They have a greater density and a smaller size than the gaseous planets. The latter are much larger than the rocky planets (to create the equivalent of Jupiter, imagine you have to align 11 Earths on its diameter), they are made of a small solid central cor ...
Galaxies and the Universe
... • A reflecting telescope that was placed into orbit in 1990 • Sends images and measurements back to Earth electronically • A deep image of an “empty” portion of the sky reveals that the universe is filled with galaxies • The light we see from the most distant galaxies has traveled approximately 10 b ...
... • A reflecting telescope that was placed into orbit in 1990 • Sends images and measurements back to Earth electronically • A deep image of an “empty” portion of the sky reveals that the universe is filled with galaxies • The light we see from the most distant galaxies has traveled approximately 10 b ...
S E N S ` 2 0 0 6
... How one planet begins its life? Is it originate from the gas and dust between stars? Or it’s life begins from star’s pieces after some kind of grandiose cataclysm? And how to explain the chemical consistence of planets - why there are so many heavy elements in the Earth like planets, but not in the ...
... How one planet begins its life? Is it originate from the gas and dust between stars? Or it’s life begins from star’s pieces after some kind of grandiose cataclysm? And how to explain the chemical consistence of planets - why there are so many heavy elements in the Earth like planets, but not in the ...
What Makes Up the Solar System?
... This planet is about the same size as Earth. Venus can become very hot, – (860 F). It is even hotter than Mercury because its atmosphere keeps heat from escaping. ...
... This planet is about the same size as Earth. Venus can become very hot, – (860 F). It is even hotter than Mercury because its atmosphere keeps heat from escaping. ...
Sun-Earth System - Solar Physics and Space Weather
... • The sphere of the human environment continues to expand beyond our planet – Dependence on space-based systems – Permanent presence of humans in Earth orbit and beyond – Exploring the galaxy for life and habitability of planets • Current technology limitations impede our progress in achieving affor ...
... • The sphere of the human environment continues to expand beyond our planet – Dependence on space-based systems – Permanent presence of humans in Earth orbit and beyond – Exploring the galaxy for life and habitability of planets • Current technology limitations impede our progress in achieving affor ...
Observing the Solar System
... towards each other. No one is for sure how gravity works or why it is present. • As the planets are in orbit around the sun the sun’s gravity pulls on them while their inertia keeps them moving ahead. ...
... towards each other. No one is for sure how gravity works or why it is present. • As the planets are in orbit around the sun the sun’s gravity pulls on them while their inertia keeps them moving ahead. ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... theoretical or computational models have to explain what we actually find.” One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does something that ...
... theoretical or computational models have to explain what we actually find.” One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does something that ...
File
... galaxies, solar systems, and all of the contents of space. Sentence : Scientists love to explore the universe to learn new things about deep space. ...
... galaxies, solar systems, and all of the contents of space. Sentence : Scientists love to explore the universe to learn new things about deep space. ...
Guided Notes
... Meteoroids are small irregular grains of rock, most are asteroid pieces and comet dust (up to a few meters in diameter) ◦ If they collide with Earth’s atmosphere, they form visible streaks of light as they burn up and ...
... Meteoroids are small irregular grains of rock, most are asteroid pieces and comet dust (up to a few meters in diameter) ◦ If they collide with Earth’s atmosphere, they form visible streaks of light as they burn up and ...
How to Find a Habitable Planet
... • The obvious answer concerns their relative distances from the Sun • However, it turns out that this is only part of the story… ...
... • The obvious answer concerns their relative distances from the Sun • However, it turns out that this is only part of the story… ...
Earth Science - Montville.net
... 5. Pretend you are a reporter for a newspaper, write an article for your paper. Use a catchy headline; add interesting details from your research. Share stories with the class. 6. Make up a guessing game. Read clues about “your’” planet and see if others can guess the name of the planet. 7. Using di ...
... 5. Pretend you are a reporter for a newspaper, write an article for your paper. Use a catchy headline; add interesting details from your research. Share stories with the class. 6. Make up a guessing game. Read clues about “your’” planet and see if others can guess the name of the planet. 7. Using di ...
Earth`s Origin & Early Evolution
... present orbits of the terrestrial planets. The process leads eventually to a small number of large planetary bodies. Evidence for this impacting process can be seen in the early impact craters found on planetary surfaces An explanation of the type given above for the origin of the planets in the sol ...
... present orbits of the terrestrial planets. The process leads eventually to a small number of large planetary bodies. Evidence for this impacting process can be seen in the early impact craters found on planetary surfaces An explanation of the type given above for the origin of the planets in the sol ...
MIT
... • Asteroids - small, solid objects in the Solar System • Comets - small bodies in the Solar System that (at least occasionally) exhibit a coma (or atmosphere) and/or a tail • Meteorites - small extraterrestrial body that reaches the Earth's surface ...
... • Asteroids - small, solid objects in the Solar System • Comets - small bodies in the Solar System that (at least occasionally) exhibit a coma (or atmosphere) and/or a tail • Meteorites - small extraterrestrial body that reaches the Earth's surface ...
The Closest New Stars To Earth
... it's one of the most spectacular sights in the night sky, and the vast majority of the light from galaxies originates from nebulae like this one. But its great luminosity and relative proximity makes it easy to overlook the fact that there are a slew of much closer starforming regions than the Orion ...
... it's one of the most spectacular sights in the night sky, and the vast majority of the light from galaxies originates from nebulae like this one. But its great luminosity and relative proximity makes it easy to overlook the fact that there are a slew of much closer starforming regions than the Orion ...
Panspermia
Panspermia (from Greek πᾶν (pan), meaning ""all"", and σπέρμα (sperma), meaning ""seed"") is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids, comets, planetoids and, also, by spacecraft in the form of unintended contamination by microorganisms.Panspermia is a hypothesis proposing that microscopic life forms that can survive the effects of space, such as extremophiles, become trapped in debris that is ejected into space after collisions between planets and small Solar System bodies that harbor life. Some organisms may travel dormant for an extended amount of time before colliding randomly with other planets or intermingling with protoplanetary disks. If met with ideal conditions on a new planet's surfaces, the organisms become active and the process of evolution begins. Panspermia is not meant to address how life began, just the method that may cause its distribution in the Universe.Pseudo-panspermia (sometimes called ""soft panspermia"" or ""molecular panspermia"") argues that the pre-biotic organic building blocks of life originated in space and were incorporated in the solar nebula from which the planets condensed and were further —and continuously— distributed to planetary surfaces where life then emerged (abiogenesis). From the early 1970s it was becoming evident that interstellar dust consisted of a large component of organic molecules. Interstellar molecules are formed by chemical reactions within very sparse interstellar or circumstellar clouds of dust and gas. The dust plays a critical role of shielding the molecules from the ionizing effect of ultraviolet radiation emitted by stars.Several simulations in laboratories and in low Earth orbit suggest that ejection, entry and impact is survivable for some simple organisms.