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AST 301 Fall 2007 AST 301: Review for Exam 3 This exam covers
AST 301 Fall 2007 AST 301: Review for Exam 3 This exam covers

... Chapter 15: This chapter is continuous with Chapter 6 because it is concerned with developing a theoretical model that can explain most of the features of our solar system that we read about in Chapter 6. I suggest you try testing your understanding of the material by telling a friend (imaginary or ...
slides - quantware mips center
slides - quantware mips center

... proximity to chaos domain. It is located between the "teeth" of instability in the space of orbital parameters. Kepler-16b survives because its orbit is close to the half-integer 11/2 orbital resonance with the central binary. In the Solar system, this phenomenon is similar to the survival of Pluto ...
October 3
October 3

... rings and a large number of moons ...
Solar System: ground-based
Solar System: ground-based

... planet formation timescale - Time scale for dust settling and grain growth? - Planet formation mechanism: core accretion vs. disk instability - Physical structure disks (T, n, v, ….)? ...
ASTR 2020 Space Astronomy Homework #3 Due Tuesday, 4
ASTR 2020 Space Astronomy Homework #3 Due Tuesday, 4

... 3] Parallax. As we discussed in class, the unit called a parsec is defined as the distance at which the Earth-Sun mean separation (the Astronomical Unit), subtends 1 arc-second (assuming that the Earth-Sun separation is at right angles to the line connecting the Sun to the distant object). [a] How ...
Triggered Star Formation by Massive Stars in Star
Triggered Star Formation by Massive Stars in Star

... • Stars closer to the cloud, formed later in the sequence, are younger in age, with the youngest stars at the interacting region (i.e., bright rims of the cloud). • There are no young stars within the BRC. (3) and (4) are noticeably in contrast to the case of spontaneous star formation which conceiv ...
Cosmochemistry from Nanometers to Light- Years A Written by
Cosmochemistry from Nanometers to Light- Years A Written by

... astronomers and imaginative theories conjured up by astrophysicists. Nevertheless, cosmochemistry and astronomy never meshed seamlessly. That seems to be changing as observations at all scales become progressively better and new discoveries make scientists in one field take notice of those in the ot ...
ISM&Galaxy
ISM&Galaxy

... was unclear what these were or how far away they were. They could be forming solar systems, or other galaxies (of course, we weren’t sure how big ours was). It was also found that some of them had rather large radial velocities (and maybe proper motions). ...
Our Solar System
Our Solar System

... that cannot, and between problems that can be solved by technology and those that cannot with regards to solar system formation. -Estimate quantities of distances in parsec. Estimate the age of the solar system. -Describe and apply classification systems and nomenclature used in the sciences. Classi ...
2012年雅思阅读考试考前冲刺试题(1)
2012年雅思阅读考试考前冲刺试题(1)

... 11.答案:orbiting (第12段第1句:Since the discovery in 1995 of the first "exoplanet" - a planet orbiting a star other than the Sun - more than 200 others have been found by ground-based observatories.) 12.答案:harbour life (第13段:Until now the usual method of finding exoplanets has been to detect the "wobble" ...
Comets - LWC Earth Science
Comets - LWC Earth Science

... • A coma is the fuzzy, gaseous component of a comet’s head (atmosphere). ...
Source: https://www
Source: https://www

... The size of the habitable zone clearly depends on the luminosity of the star, which determines the equilibrium temperature of the planet. However, modern models for the range of the habitable zone take into account more subtle effects, such as the effect of the carbonate-silicate cycle in regulatin ...
L1 Solar system
L1 Solar system

... •beginning of 17th century: discoveries of satellites of Jupiter and Saturn by Galilei (1564-1642), Huygens (1629-1659) and Cassini (1625-1712). •1781 discovery of Uranus by William Herschel •1846 discovery of Neptune by Johann Galle. Neptune was first theoretically predicted by John Adams and Urbai ...
Formation of the Solar System
Formation of the Solar System

... the collapsing cloud, the outer, cooler regions of the cloud swirl around the central protostar in a disk-like structure called the solar nebula. An advanced theory, called the condensation theory, includes the nebular theory but also incorporates interstellar dust as an essential ingredient in the ...
Comets - Astronomy @ Walton High School
Comets - Astronomy @ Walton High School

... metal, they can also contain organic compounds. Asteroids are similar to comets but do not have a visible coma (fuzzy outline and tail) like comets do. Meteoroid •A meteoroid is a small rock or particle of debris in our solar system. They range in size from dust to around 10 metres in diameter (larg ...
STEP Mission: Search for Terrestrial Exo
STEP Mission: Search for Terrestrial Exo

... necessary to go to space to reach the precision required to detect all planets down to the telluric regime. We proposed STEP to Chinese Strategic Pioneer Program (SPP) on Space Science and just approved to be the advanced research project. The objective is to use differential astrometry to complete ...
Slide 1
Slide 1

... Essential for the survival of life . It should not be always pleasant for drinking or taking a shower. Terrestrial organisms have been found in boiling water or ice cold. But it must be liquid which means the temperature cannot be too high or too low. In addition to have water on a planet’s surface, ...
Chapter 13: Interstellar Matter and Star Formation
Chapter 13: Interstellar Matter and Star Formation

... (i) Absorption lines due to interstellar gas tend to be narrower than those produced by a star’s atmosphere. (ii) Lines caused by a stellar atmosphere will have a different Doppler shift than those caused by the interstellar gas. (iii) Interstellar gas will generally be much cooler than the gas of t ...
Solar System Formation
Solar System Formation

... astronomers in the early 1900s found with the nebular hypothesis: what sort of collapse could end up with most of the angular momentum in the solar system in Jupiter (biggish mass, big radius) but not in the Sun? ...
PowerPoint
PowerPoint

... Exploring (Earth-like) Exoplanets • RV search for new low-mass planets • Transit follow-up studies • Gravitational microlensing follow-up studies • Direct imaging studies ...
Quiz4 - UNLV Physics
Quiz4 - UNLV Physics

... A) Earth-mass, in Earth-like orbits. B) Jupiter-mass, in Jupiter-like orbits. C) Jupiter-mass, in very close orbits. D) Earth-mass, in very close orbits. E) a wide range of masses, in edge-on orbits. Answer: C Current techniques can measure stellar motion to less than A) walking speed. B) running sp ...
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Lecture #33: Solar System Origin I The Main Point What is a

... • All have problems with the basic physics or matching some of the constraints, but nebular models are “best”. Astro 102/104 ...
ASTR100 Class 01 - University of Maryland Department of
ASTR100 Class 01 - University of Maryland Department of

...  Thermal pressure cannot stop contraction because the star is constantly losing thermal energy from ...
Methods for the detection of exoplanets
Methods for the detection of exoplanets

... Possibility of remote detection of life Explore the contrast star/planet in thermal IR (Des Marais et al. 2002, Segura et al. 2003) ...
HABITABLE PLANETS For every star with planets, how many of
HABITABLE PLANETS For every star with planets, how many of

... with life, then they are the most common abodes for life in the universe, and we should be searching for signals from them. Also, they have very long main sequence lifetimes, so you could have civilizations as old as 1015 billion years on planets orbiting these stars. Conclusion: avg. number of habi ...
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Directed panspermia

Directed panspermia concerns the deliberate transport of microorganisms in space to be used as introduced species on lifeless planets. Directed panspermia may have been sent to Earth to start life here, or may be sent from Earth to seed exoplanets with life.Historically, Shklovskii and Sagan (1966) and Crick and Orgel (1973) hypothesized that life on Earth may have been seeded deliberately by other civilizations. Conversely, Mautner and Matloff (1979) and Mautner (1995, 1997) proposed that we ourselves should seed new planetary systems, protoplanetary discs or star-forming clouds with microorganisms, to secure and expand our organic gene/protein life-form. To avoid interference with local life, the targets may be young planetary systems where local life is unlikely. Directed panspermia can be motivated by biotic ethics that value the basic patterns of organic gene/protein life with its unique complexity and unity, and its drive for self-propagation.Belonging to life then implies panbiotic ethics with a purpose to propagate and expand life in space. Directed panspermia for this purpose is becoming possible due to developments in solar sails, precise astrometry, the discovery of extrasolar planets, extremophiles and microbial genetic engineering. Cosmological projections suggests that life in space can then have an immense future.
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