Introduction to the Planets and other solar
... rather metallic composition. It is also likely that there is quite a bit of icy material within asteroids, but it is difficult to estimate how much. It is also worth noting that “icy” is a general term for things that are volatile – they evaporate/melt easily under even moderate conditions. All know ...
... rather metallic composition. It is also likely that there is quite a bit of icy material within asteroids, but it is difficult to estimate how much. It is also worth noting that “icy” is a general term for things that are volatile – they evaporate/melt easily under even moderate conditions. All know ...
Unit 1
... the star, and back again – To passengers on the ship, it only takes 20 years for the round-trip! ...
... the star, and back again – To passengers on the ship, it only takes 20 years for the round-trip! ...
of universal gravitation and of
... from zero to 0.00894 feet per second, and its average velocity during the first second would be 0.00894/2 or 0.00447 feet per second. ...
... from zero to 0.00894 feet per second, and its average velocity during the first second would be 0.00894/2 or 0.00447 feet per second. ...
Lecture 13: The Stars –
... One of the latest discovered Exoplanets: (reported September 29, 2010) ...
... One of the latest discovered Exoplanets: (reported September 29, 2010) ...
Foundations III The Stars
... One of the latest discovered Exoplanets: (reported September 29, 2010) ...
... One of the latest discovered Exoplanets: (reported September 29, 2010) ...
Astro 27 Solar System Formation and ExoPlanets Slide Show
... So, the Doppler Shifts of the parent star would be tiny. Even mighty Jupiter is only 1/1000 the mass of the sun. It moves at a speed of 12.7 km/sec in its orbit, so the sun moves only 1/1000 of that, or 13 meters/sec So v/c is 4x10-8 or 40 billionths or 1 part in 25 million!! Wavelength shifts of on ...
... So, the Doppler Shifts of the parent star would be tiny. Even mighty Jupiter is only 1/1000 the mass of the sun. It moves at a speed of 12.7 km/sec in its orbit, so the sun moves only 1/1000 of that, or 13 meters/sec So v/c is 4x10-8 or 40 billionths or 1 part in 25 million!! Wavelength shifts of on ...
Sample Exam 3
... 19) Tiny quantum fluctuations in the energy density of the universe at 10-33 s after the Big Bang are actually responsible for the later A) expansion of the universe. B) widespread existence of matter, instead of anti-matter or no matter, in the universe. C) formation of large scale structure of the ...
... 19) Tiny quantum fluctuations in the energy density of the universe at 10-33 s after the Big Bang are actually responsible for the later A) expansion of the universe. B) widespread existence of matter, instead of anti-matter or no matter, in the universe. C) formation of large scale structure of the ...
1 Marsbugs: The Electronic Astrobiology Newsletter, Volume 12
... Stars die when they have used up most of their hydrogen. For the Sun, this will happen in about 4.5 billion years. But some stars will experience a brief rebirth when their helium suddenly ignites, and the remaining hydrogen in their outer envelope is drawn into the helium shell. After the explosive ...
... Stars die when they have used up most of their hydrogen. For the Sun, this will happen in about 4.5 billion years. But some stars will experience a brief rebirth when their helium suddenly ignites, and the remaining hydrogen in their outer envelope is drawn into the helium shell. After the explosive ...
PowerPoint
... What is the habitable zone? Define life? What is extraterrestrial life? What is the Drake equation? What is SETI? Should we not try to contact aliens? Biomolecules in space? Extremophiles? Most likely type of ET? What is the Milkyway? – Components of the Milkyway? What do they mean? Types of stars? ...
... What is the habitable zone? Define life? What is extraterrestrial life? What is the Drake equation? What is SETI? Should we not try to contact aliens? Biomolecules in space? Extremophiles? Most likely type of ET? What is the Milkyway? – Components of the Milkyway? What do they mean? Types of stars? ...
Lab #10 (Apr 10-13)
... study of the solar system and our galaxy. In the earlier Venus lab, we learned about the story of Captain Cook’s expedition to Tahiti. Part of his mission was to measure the timing of the transit of Venus across the Sun. While Cook was making his measurements, astronomers were also timing the transi ...
... study of the solar system and our galaxy. In the earlier Venus lab, we learned about the story of Captain Cook’s expedition to Tahiti. Part of his mission was to measure the timing of the transit of Venus across the Sun. While Cook was making his measurements, astronomers were also timing the transi ...
Teachers` Manual - Amundsen High School
... Some evidence that the 4 big outer planets may have grown directly from "lumps" in the solar nebula. Also evidence that orbital position of outer planets may have drifted Some planetesimals survive: Captured by planets - form moons. Others become asteroids and comets Smaller bodies bombard p ...
... Some evidence that the 4 big outer planets may have grown directly from "lumps" in the solar nebula. Also evidence that orbital position of outer planets may have drifted Some planetesimals survive: Captured by planets - form moons. Others become asteroids and comets Smaller bodies bombard p ...
Sections 5 - Columbia Physics
... 2. Consider an idealized Sun and Earth as blackbodies in otherwise empty space. The Sun has a surface temperature T S = 6, 000 K, and heat transfer processes on the Earth are effective enough to keep the Earth’s surface temperature uniform. The radius of the Earth is RE = 6.4 × 106 m, the radius of ...
... 2. Consider an idealized Sun and Earth as blackbodies in otherwise empty space. The Sun has a surface temperature T S = 6, 000 K, and heat transfer processes on the Earth are effective enough to keep the Earth’s surface temperature uniform. The radius of the Earth is RE = 6.4 × 106 m, the radius of ...
Comets, Asteroids, and Meteors
... As a comet approaches the sun and heats up, some of its gas and dust stream outward forming a tail. The name comet means “long haired star” in Greek. Most comets have two tails – a gas tail and a dust tail. Both tails usually point away from the sun. ...
... As a comet approaches the sun and heats up, some of its gas and dust stream outward forming a tail. The name comet means “long haired star” in Greek. Most comets have two tails – a gas tail and a dust tail. Both tails usually point away from the sun. ...
Answer titese questions on a piece of loose leaf paper.
... to measure distances to nearby stars. Qiini: Think about the thumb demo we didin class.) I I . The Hcrczspiung-Russcll diagram shows the relationship between wliai two charaeteiistios of stars? 12- More than 90% of all stars arc cotisiderx;d stars and can be found in a diagonal path aaoss the center ...
... to measure distances to nearby stars. Qiini: Think about the thumb demo we didin class.) I I . The Hcrczspiung-Russcll diagram shows the relationship between wliai two charaeteiistios of stars? 12- More than 90% of all stars arc cotisiderx;d stars and can be found in a diagonal path aaoss the center ...
Astronomy Assignment #1
... The moral of this problem is, again, that space is real big. For practical reasons, the spacecraft sent to explore the outermost objects of our Solar System must travel very fast. Currently, the New Horizons spacecraft is on its way to Pluto having been launched in January of 2006 and scheduled for ...
... The moral of this problem is, again, that space is real big. For practical reasons, the spacecraft sent to explore the outermost objects of our Solar System must travel very fast. Currently, the New Horizons spacecraft is on its way to Pluto having been launched in January of 2006 and scheduled for ...
PHYS-633: Problem set #0 Solutions
... important to include to understand the actual surface temperature of Earth. This apparently more realistic model thus seems to give a temperature that is much lower than the typical temperature of the actual Earth. The key piece of physics missing is the “greenhouse effect”, which blocks the re-radi ...
... important to include to understand the actual surface temperature of Earth. This apparently more realistic model thus seems to give a temperature that is much lower than the typical temperature of the actual Earth. The key piece of physics missing is the “greenhouse effect”, which blocks the re-radi ...
NIE10x301Sponsor Thank You (Page 1)
... divided into elliptical and spiral galaxies. Our own Milky Way is a pretty typical spiral containing ~200 billion stars in spiral arms making up a flat disk 100,000 light years (ly) across and 2500 ly thick, and a central bulge of older stars perhaps 16,000 ly thick. The Sun is 28,000 ly from the ce ...
... divided into elliptical and spiral galaxies. Our own Milky Way is a pretty typical spiral containing ~200 billion stars in spiral arms making up a flat disk 100,000 light years (ly) across and 2500 ly thick, and a central bulge of older stars perhaps 16,000 ly thick. The Sun is 28,000 ly from the ce ...
The star Betelgeuse is about 500 light years away from us. If this star
... d. emitting neutrinos From Hubble’s law we can deduce that a. the earth and sun will gradually separate b. we are at the center of expansion c. the CRB could tunnel into black holes d. the universe may have a finite age Stars are made mostly of a. carbon, nitrogen and oxygen from big bang nucleosyn ...
... d. emitting neutrinos From Hubble’s law we can deduce that a. the earth and sun will gradually separate b. we are at the center of expansion c. the CRB could tunnel into black holes d. the universe may have a finite age Stars are made mostly of a. carbon, nitrogen and oxygen from big bang nucleosyn ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.