The Milky Way Galaxy
... Galaxy contains old stars and little in the way of dust and gas. • The disk of the galaxy contains gas, dust, younger stars with more complex chemical compositions, and active regions of star formation like the Orion nebula. ...
... Galaxy contains old stars and little in the way of dust and gas. • The disk of the galaxy contains gas, dust, younger stars with more complex chemical compositions, and active regions of star formation like the Orion nebula. ...
Chapter 1: The Sun - New Hampshire Public Television
... and time. From that initial expansion, atoms form from protons, neutrons and electrons. Then come the first chemical elements - hydrogen, helium, and a little lithium. Expansion continues, temperatures drop. After 300,000 years, the Universe becomes transparent. Light and other radiation speed acros ...
... and time. From that initial expansion, atoms form from protons, neutrons and electrons. Then come the first chemical elements - hydrogen, helium, and a little lithium. Expansion continues, temperatures drop. After 300,000 years, the Universe becomes transparent. Light and other radiation speed acros ...
Star - Uplift Education
... account for the real amount of helium in Universe (24%). In 1960 it was proposed that sometime during the early history of the Universe, long before any star, Universe was at a sufficiently high temperature to produce helium by fusion. In this process many high energy photons would be produced. The ...
... account for the real amount of helium in Universe (24%). In 1960 it was proposed that sometime during the early history of the Universe, long before any star, Universe was at a sufficiently high temperature to produce helium by fusion. In this process many high energy photons would be produced. The ...
The extreme physical properties of the CoRoT-7b super
... al. (2008) and Tian et al. (2008) proposed non-vanishing values, e.g. a few tenths, which would still point to a strong erosion of the atmosphere. In agreement with Valencia et al. (2010), we conclude that the atmospheric erosion processes for CoRoT-7b are likely to be so efficient that volatile spe ...
... al. (2008) and Tian et al. (2008) proposed non-vanishing values, e.g. a few tenths, which would still point to a strong erosion of the atmosphere. In agreement with Valencia et al. (2010), we conclude that the atmospheric erosion processes for CoRoT-7b are likely to be so efficient that volatile spe ...
Chapter 2 User`s Guide to the Sky: Patterns and Cycles
... • When you look up at the stars, you look out through a layer of air only about 100 kilometers deep. • Beyond that, space is nearly empty—with the planets of our solar system several AU away and the far more distant stars scattered many light-years apart. ...
... • When you look up at the stars, you look out through a layer of air only about 100 kilometers deep. • Beyond that, space is nearly empty—with the planets of our solar system several AU away and the far more distant stars scattered many light-years apart. ...
MS Word version
... Question 5: If a planet is twice as far from the sun at aphelion than at perihelion then the strength of the gravitational force at aphelion will be… a) will be half as much than it is at perihelion. b) twice as much than it is at perihelion. c) four times less than it is at perihelion. d) the same ...
... Question 5: If a planet is twice as far from the sun at aphelion than at perihelion then the strength of the gravitational force at aphelion will be… a) will be half as much than it is at perihelion. b) twice as much than it is at perihelion. c) four times less than it is at perihelion. d) the same ...
Small images
... Betelgeuse - red supergiant, about 20 solar masses. May have shrunk 15% in radius since 1993. This probably does not indicate evolution at its center. 570 ly away. Variable star. 1000 times as luminous as the sun Rigel - brightest star in Orion by (a bit more than -Orionis = Betelgeuse – a variable ...
... Betelgeuse - red supergiant, about 20 solar masses. May have shrunk 15% in radius since 1993. This probably does not indicate evolution at its center. 570 ly away. Variable star. 1000 times as luminous as the sun Rigel - brightest star in Orion by (a bit more than -Orionis = Betelgeuse – a variable ...
Lecture 25: The Outer Planets
... field measurements – the spin axis is tilted by 98o (it is almost perpendicular to the orbital axis)...is this due to a collision?? •The rotation period of Neptune is 16.1 hours according to observations of the magnetic field, and the tilt of Neptune’s spin axis is 29.6o •Pluto has a spin period of ...
... field measurements – the spin axis is tilted by 98o (it is almost perpendicular to the orbital axis)...is this due to a collision?? •The rotation period of Neptune is 16.1 hours according to observations of the magnetic field, and the tilt of Neptune’s spin axis is 29.6o •Pluto has a spin period of ...
The Sun Video Focus Questions
... 1. The sun is the largest body in our solar system, and it makes up about 99% of the solar system (more than all the other planets, comets, and asteroids combined.) 2. It takes the Earth 365 days to orbit the sun. 3. Copernicus and Galileo changed the way we view the universe today by proving the he ...
... 1. The sun is the largest body in our solar system, and it makes up about 99% of the solar system (more than all the other planets, comets, and asteroids combined.) 2. It takes the Earth 365 days to orbit the sun. 3. Copernicus and Galileo changed the way we view the universe today by proving the he ...
Gravitation 4, and the Waltz of the Planets
... its epicycle adds to the eastward motion of the epicycle on the deferent (Figure 4-3b). Then the planet is seen to be in direct (eastward) motion against the background stars. However, when the planet is on the part of its epicycle nearest Earth, the motion of the planet along the epicycle is opposi ...
... its epicycle adds to the eastward motion of the epicycle on the deferent (Figure 4-3b). Then the planet is seen to be in direct (eastward) motion against the background stars. However, when the planet is on the part of its epicycle nearest Earth, the motion of the planet along the epicycle is opposi ...
Writer`s Workshop Series The Art of Science Fiction - Sci Fi
... right ascension and declination. But, to quote Shakespeare: “A rose by any other name would have just as many thorns …” or something like that. When astronomers transferred longitude and latitude to the heavens, they had to make one basic change to their coordinate system. When measuring things on t ...
... right ascension and declination. But, to quote Shakespeare: “A rose by any other name would have just as many thorns …” or something like that. When astronomers transferred longitude and latitude to the heavens, they had to make one basic change to their coordinate system. When measuring things on t ...
Teaching astrophysics in VCE Physics
... $ From these figures it was calculated that if the Sun was made of coal, it could burn for about 10,000 years - given a lot of oxygen! As life on the Earth seemed to be millions of years old this appeared to be a problem! $ Lord Kelvin and Hermann von Helmholtz suggested that the collapsing matter f ...
... $ From these figures it was calculated that if the Sun was made of coal, it could burn for about 10,000 years - given a lot of oxygen! As life on the Earth seemed to be millions of years old this appeared to be a problem! $ Lord Kelvin and Hermann von Helmholtz suggested that the collapsing matter f ...
Document
... • Galileo showed that stars must be much farther than Tycho thought — in part by using his telescope to see that the Milky Way is countless individual stars. If stars were much farther away, then lack of detectable parallax was no longer so troubling. ...
... • Galileo showed that stars must be much farther than Tycho thought — in part by using his telescope to see that the Milky Way is countless individual stars. If stars were much farther away, then lack of detectable parallax was no longer so troubling. ...
Earth v. Black Hole
... our Sun were lurking just beyond Pluto’s orbit, we’d have no way of knowing it was there. A. ...
... our Sun were lurking just beyond Pluto’s orbit, we’d have no way of knowing it was there. A. ...
CHP 4
... A(n) _______________ is a single conjecture that can be tested. a. hypothesis b. paradigm c. natural law d. model e. theory A(n) _______________ is a description of some natural phenomenon that can't be right or wrong. It is merely a convenient way to think about a natural phenomenon. a. hypothesis ...
... A(n) _______________ is a single conjecture that can be tested. a. hypothesis b. paradigm c. natural law d. model e. theory A(n) _______________ is a description of some natural phenomenon that can't be right or wrong. It is merely a convenient way to think about a natural phenomenon. a. hypothesis ...
List of Astronomical Events for 2017
... or ice particles, similar to grains of sand. As Earth collides with these particles, they streak through the atmosphere, resulting in bright flashes as they burn up. We see these bright flashes as meteors. Timings & Rates: Meteor showers are best viewed between midnight and sunrise on the peak dates ...
... or ice particles, similar to grains of sand. As Earth collides with these particles, they streak through the atmosphere, resulting in bright flashes as they burn up. We see these bright flashes as meteors. Timings & Rates: Meteor showers are best viewed between midnight and sunrise on the peak dates ...
S1-4-05 - Seasonal Constelallations - Lesson
... them”, and some thought that light hits an object, scatters and enters our eye. In a small way, the light that hits an object does light it up, but it is not the object that lights up, but that when the object enters the scope of the light, it enables our eye to perceive it as something other than b ...
... them”, and some thought that light hits an object, scatters and enters our eye. In a small way, the light that hits an object does light it up, but it is not the object that lights up, but that when the object enters the scope of the light, it enables our eye to perceive it as something other than b ...
ASTRONOMY 301 EXAMPLES OF TEST
... (A) the Sun is closer to the Earth’s equator than to its north pole. (B) the Sun’s rays hit the ground nearly vertically in Hawaii; in contrast, sunlight hits the ground at a shallow angle at the north pole. (C) the Earth’s atmosphere has fewer clouds near the equator. (D) This is an accident of the ...
... (A) the Sun is closer to the Earth’s equator than to its north pole. (B) the Sun’s rays hit the ground nearly vertically in Hawaii; in contrast, sunlight hits the ground at a shallow angle at the north pole. (C) the Earth’s atmosphere has fewer clouds near the equator. (D) This is an accident of the ...
File
... The more massive a star is, the shorter its stay on the main sequence. The most massive stars may be there for only a few million years. A star like the Sun, on the other hand, is not especially massive and will live on the main sequence for about ten billion years. Since it has taken over four bill ...
... The more massive a star is, the shorter its stay on the main sequence. The most massive stars may be there for only a few million years. A star like the Sun, on the other hand, is not especially massive and will live on the main sequence for about ten billion years. Since it has taken over four bill ...
Section 19.3
... The Big Bang theory says the universe began as a huge explosion between 10 billion and 20 billion years ago. According to this theory, all matter and energy started in a space smaller than the nucleus of an atom. ...
... The Big Bang theory says the universe began as a huge explosion between 10 billion and 20 billion years ago. According to this theory, all matter and energy started in a space smaller than the nucleus of an atom. ...
A Compilation of Relevant Articles from MMM`s first 25 years, issues
... sun of which it is a distant companion. This system lies 60° below the celestial equator, well below the horizon from most of the USA. 2.A. 106 million times as far as the Moon, and 9,000 times as far as Neptune. 3.A. Sirius is 8.7 light years distant, Procyon 11.3, Altair 16.6, Fomalhaut 23, and Ve ...
... sun of which it is a distant companion. This system lies 60° below the celestial equator, well below the horizon from most of the USA. 2.A. 106 million times as far as the Moon, and 9,000 times as far as Neptune. 3.A. Sirius is 8.7 light years distant, Procyon 11.3, Altair 16.6, Fomalhaut 23, and Ve ...
the rest of the univ..
... extremely faint Kuiper Belt objects (left). The objects are very small and faint perhaps only 20 km or so across. There may be as many as 100 million such comets in low-inclination orbits and shining brighter than the HST's magnitude-28 limit. (A follow-up HST observation failed to confirm this obse ...
... extremely faint Kuiper Belt objects (left). The objects are very small and faint perhaps only 20 km or so across. There may be as many as 100 million such comets in low-inclination orbits and shining brighter than the HST's magnitude-28 limit. (A follow-up HST observation failed to confirm this obse ...
On Some Other Planet - Glasgow Science Centre
... No, not yet. However, I have the key components for life; nitrogen and carbon compounds. I also have water, with radioactive energy and organic molecules present. I just don’t know how to make little bugs out of all this stuff! ...
... No, not yet. However, I have the key components for life; nitrogen and carbon compounds. I also have water, with radioactive energy and organic molecules present. I just don’t know how to make little bugs out of all this stuff! ...
Procedurally Generating an Artificial Galaxy
... or a CGI sequence in a movie, certain aspects can be handed over to algorithms for procedural generation. This can either be done beforehand or as the scene plays out. It can be as simple as generating numbers that determines random positions for objects designed by artists. Like making a forest out ...
... or a CGI sequence in a movie, certain aspects can be handed over to algorithms for procedural generation. This can either be done beforehand or as the scene plays out. It can be as simple as generating numbers that determines random positions for objects designed by artists. Like making a forest out ...
Assessing the massive young Sun hypothesis to solve the warm
... ceptible to photodissociation by solar UV, it can remain in the atmosphere for much longer and methanogenic bacteria could maintain the required atmospheric levels (Pavlov et al. 2000). Were there adequate populations of methanogenic bacteria available in the early Archean? With only trace amounts o ...
... ceptible to photodissociation by solar UV, it can remain in the atmosphere for much longer and methanogenic bacteria could maintain the required atmospheric levels (Pavlov et al. 2000). Were there adequate populations of methanogenic bacteria available in the early Archean? With only trace amounts o ...
Extraterrestrial life
Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.