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Water ice lines around super-Jovian planets and Implications for
Water ice lines around super-Jovian planets and Implications for

... panels, the planets of the Solar System are also shown. Note that these figures are not corrected for the various observational biases, which favor for the radial velocity and the transit technique the detection of close-in, giant planets. ...
direct contact among galactic civilizations by relativistic
direct contact among galactic civilizations by relativistic

... system Wi,16,17,1f3)~The fraction of stars of later type than F5V is greater than 0.98; well over 60 per cent of these are dwarf M stars (IS). It is not known what influence the luminosity of the star has on the subsequent condensation and dissipation of the surrounding solar nebula. We might expect ...
The solar system
The solar system

... - the laws of gravitational interactions are well known and at least formal equations can be written. Approximate solutions have been established by KEPLER and NEWTON: they are 0 order approximation. - the numerical values of a few parameters remain small: eccentricities of the orbits, planets masse ...
Chapter 15 The Formation of Planetary Systems
Chapter 15 The Formation of Planetary Systems

... ! Nearly all extrasolar planets have (so far) been discovered by radial velocity method. Why? Because they are mostly planets orbiting close to their parent star, so moving fast, just what Doppler effect is sensitive to. ! More than 300 extrasolar planets have been discovered so far, over 100 since ...
Chapter 15 The Formation of Planetary Systems
Chapter 15 The Formation of Planetary Systems

... A substantial fraction of stars that have been measured have planets around them of the sort that can now be detected. They are mostly gas giants like Jupiter, but closer to star. Why didn’t our Jupiter migrate? Nearly all of these have been discovered using the radial velocity method. This method ( ...
Solutions Assignment #3
Solutions Assignment #3

... always be less because of absorption by the atmosphere, the angle of incidence not being 90°, the weather (cloud cover), nighttime, and varying amounts of daylight. d. To optimize the amount of power collected, a solar collector should be pointed south in the Northern Hemisphere, and north in the So ...
Solar system formation by accretion has no observational evidence
Solar system formation by accretion has no observational evidence

... the conditions under which a shapeless cloud of gas and dust gave rise to our solar system.”41 Similarly, there is the hope that, “Close-up studies of asteroids and burned-out comets may reveal clues about the early universe.”42 A report about the Cassini mission to Saturn’s rings said, “Scientists ...
Comet Catalina 2016 - Fraser Heights Chess Club
Comet Catalina 2016 - Fraser Heights Chess Club

... • We know that comets are composed primarily of many varieties of ice, including water, carbon dioxide, methane and ammonia ice. There is also a bit of dirt mixed in, usually in the form of carbon. • This makes them appear as dirty snowballs, which is actually the name for the model that is proposed ...
STAR FORMATION
STAR FORMATION

... • If the protostar's mass is less than about 8% of the Sun's mass it is insufficient to compress the center to temperatures and densities adequate to allow ordinary fusion -- THE LOWER MASS LIMIT • Such failed stars are called brown dwarfs. • Most astronomers make a further distinction between brown ...
Brown spots mark impact sites of Comet Shoemaker–Levy on
Brown spots mark impact sites of Comet Shoemaker–Levy on

... Comets are distinguished from asteroids by the presence of a coma or a tail. However, extinct comets that have passed close to the Sun many times have lost nearly all of their volatile ices and dust and may come to resemble small asteroids.[2] Asteroids are thought to have a different origin from co ...
Exam 2
Exam 2

... hot remnant of the central star heats the gas, causing it to glow. For a few thousand years, the dying star is surrounded by a beautiful gleaming cloud known as a planetary nebula. Planetary nebulae have a spectacular array of shapes, sizes and structures. This diversity holds clues about stellar ev ...
SOFIA Science - Stratospheric Observatory for Infrared Astronomy
SOFIA Science - Stratospheric Observatory for Infrared Astronomy

... > IR: objects much cooler than normal stars like the Sun for example: stars and planets in the process of forming; > IR: objects embedded in, or behind, opaque ISM dust clouds; SOFIA’s instruments can see into and through those clouds > IR: organic molecules in space, which have many of their spectr ...
Habitable Planets Webquest
Habitable Planets Webquest

... 1. What characteristic distinguishes whether or not a planet can harbor life? 2. This means planets need to be the right distance from the Sun so that what 2 things don’t happen? a. b. 3. The region where the temperature is “just right” is called : _____________________________________________ 4. Wh ...
Origin of the Solar System
Origin of the Solar System

... Meteorites are studied in great detail in the laboratory so that some of their properties are found with high accuracy. For instance, they provide by far the best chronometer for the origin of the Solar System. They also provide us with almost unaltered samples of the solid material in the protosola ...
Star Formation
Star Formation

... monoxide map ...
The Earth in space: An essay on the origin of the Solar system
The Earth in space: An essay on the origin of the Solar system

... to a further difficulty, pointed out by Russel (1935), which is very serious. When the Sun met with a near encounter with another star, its temperature must have been more than a million degrees and its pressure more than a million atmospheres. The mean velocity of hydrogen will be 100 mps. and woul ...
Lecture notes - itü | fizik mühendisliği
Lecture notes - itü | fizik mühendisliği

... Most comets spend most of their time at vast distances from the Sun. When they approach the Sun, some gases will be vaporized and an extended coma will then be produced (of size 100000 km). The tail can be up to 1AU long. Orbits of a comet may be open or close. A comet with an open orbit will only v ...
How the Solar System formed
How the Solar System formed

... Most comets spend most of their time at vast distances from the Sun. When they approach the Sun, some gases will be vaporized and an extended coma will then be produced (of size 100000 km). The tail can be up to 1AU long. Orbits of a comet may be open or close. A comet with an open orbit will only v ...
How the Solar System formed
How the Solar System formed

... Most comets spend most of their time at vast distances from the Sun. When they approach the Sun, some gases will be vaporized and an extended coma will then be produced (of size 100000 km). The tail can be up to 1AU long. Orbits of a comet may be open or close. A comet with an open orbit will only v ...
Could Planets orbiting Red Dwarf stars support Oxygenic
Could Planets orbiting Red Dwarf stars support Oxygenic

... Why Oxygenic Photosynthesis and Complex Life on Red Dwarf (RD) orbiting Planets are possible: - Although most stars orbit each other in groups of two or three, planets orbiting one or more stars may have strange, but not life impossible climates (2 or three Suns). - RDs are long lived – an apparent ...
Physics 50 Problem set for the week of ______ Chapter 10: angular
Physics 50 Problem set for the week of ______ Chapter 10: angular

... 1. A solid sphere with a mass of 5.15 kg and radius of 0.34 m starts from rest and rolls down an inclined plane. Find its velocity when it gets to the bottom if the ball starts at a height of 2.1 m above the horizontal. 2. A solid ball and a hollow ball roll down a ramp with an incline of 35 degrees ...
File
File

... Mars will someday have oxygen in its atmosphere. Answers should include the following points: the graphs show that Earth’s atmosphere consists of approximately 21% oxygen, whereas Mars has no oxygen in its atmosphere; Earth obtained oxygen from organisms that used liquid water and carbon dioxide in ...
Comets
Comets

... Halley. This was not long after the discovery of HCN (Cyanide) in the comet. Hysteria followed as people bought gas masks and “comet pills” to protect themselves. In 1997 a group of religious fanatics committed suicide in the belief that comet Hale-Bopp was a divine sign. Finally, we spend a great d ...
Lecture 20: Formation of Planets, Exoplanets 3/30
Lecture 20: Formation of Planets, Exoplanets 3/30

... -water may be trapped at beginning in dust grains or come later from comets hitting surface??? • further from star: Gas Giants ices (water H2O, methane CH4) froze out early  larger protoplanets  more material to accrete • comets, meteors, asteroids give clues to composition of early solar system ...
Birth of Stars
Birth of Stars

... visible light, but only with infrared and radio telescopes The timescale for the initial collapse is estimated to be very short astronomically (thousands of years), implying that stars undergoing the collapse process are relatively few The collapse of a new star occurs in a region so small that in m ...
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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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