AP Physics - Universal Gravitation
... Identify the choice that best completes the statement or answers the question. 1. A satellite circles planet Roton every 2.8 h in an orbit having a radius of 1.2 × 107 m. If the radius of Roton is 5.0 × 106 m, what is the magnitude of the free-fall acceleration on the surface of Roton? A) 31 m/s2 B) ...
... Identify the choice that best completes the statement or answers the question. 1. A satellite circles planet Roton every 2.8 h in an orbit having a radius of 1.2 × 107 m. If the radius of Roton is 5.0 × 106 m, what is the magnitude of the free-fall acceleration on the surface of Roton? A) 31 m/s2 B) ...
VOCAB astronomy File
... 56. Dark line spectrum analysis- method of finding star’s composition by comparing an element’s spectrum with the star’s spectrum 57. Hertzsprung-Russell diagram- graphic that shows all the star types and how they change from living to dying stars 58. Main sequence- “living” young stars in the HR di ...
... 56. Dark line spectrum analysis- method of finding star’s composition by comparing an element’s spectrum with the star’s spectrum 57. Hertzsprung-Russell diagram- graphic that shows all the star types and how they change from living to dying stars 58. Main sequence- “living” young stars in the HR di ...
powerpoint version
... • Mass about half that of Jupiter • Just 0.05 AU from star (1/20th of Earth-Sun) • Surface temperature probably about 1300 K • Confirmed by Marcy and Butler Nothing like Mercury / the solar system. How did it get there? Massive planet formed further out and dragged in by gas and dust? If so, any ter ...
... • Mass about half that of Jupiter • Just 0.05 AU from star (1/20th of Earth-Sun) • Surface temperature probably about 1300 K • Confirmed by Marcy and Butler Nothing like Mercury / the solar system. How did it get there? Massive planet formed further out and dragged in by gas and dust? If so, any ter ...
What If Earth Became Tidally Locked?
... smaller bulges, and the bulges themselves will feel less of a pull. For many stars, the habitable zone — the ring of space within which planets are able to sustain life — overlaps partially with a zone that makes planets likely to be tidally locked to their star, making them significantly less habit ...
... smaller bulges, and the bulges themselves will feel less of a pull. For many stars, the habitable zone — the ring of space within which planets are able to sustain life — overlaps partially with a zone that makes planets likely to be tidally locked to their star, making them significantly less habit ...
Planetary Geology and Atmospheres - Cornell
... meter. For comparison, ice is about 1 g/cm3 = 1000 kg/m3, rock is about 3000 kg/m3, and metal is about 8000 kg/m3. (Hint: You can assume that all of these are objects spheres. Note that you will first need to express each radius in meters.) In addition, for each object, compare the calculated densit ...
... meter. For comparison, ice is about 1 g/cm3 = 1000 kg/m3, rock is about 3000 kg/m3, and metal is about 8000 kg/m3. (Hint: You can assume that all of these are objects spheres. Note that you will first need to express each radius in meters.) In addition, for each object, compare the calculated densit ...
Document
... 1995 - A Watershed Year in Brown Dwarf and Extra-Solar Giant Planet Research In that year the first brown dwarf was unambiguously confirmed - Gliese 229B. In that year the first planet in orbit around a star similar to the sun was also unambiguously detected – 51 Peg b. Note that in 1992 planets we ...
... 1995 - A Watershed Year in Brown Dwarf and Extra-Solar Giant Planet Research In that year the first brown dwarf was unambiguously confirmed - Gliese 229B. In that year the first planet in orbit around a star similar to the sun was also unambiguously detected – 51 Peg b. Note that in 1992 planets we ...
Coursework 6 File
... The Stefan-Boltzmann constant σ = 5.7 × 10−8 W m−2 K−4 , and the mass of the hydrogen atom mH = 1.67 × 10−27 kg. (Hint: You may find coursework 3 useful in answering this question.) 1. Calculate the radiative flux at the position of Mars due to the Sun when it is a red giant. 2. Calculate the total ...
... The Stefan-Boltzmann constant σ = 5.7 × 10−8 W m−2 K−4 , and the mass of the hydrogen atom mH = 1.67 × 10−27 kg. (Hint: You may find coursework 3 useful in answering this question.) 1. Calculate the radiative flux at the position of Mars due to the Sun when it is a red giant. 2. Calculate the total ...
Document
... • The Moon doesn’t orbit the Earth. • The Earth doesn’t orbit the Sun. • What do they do? • They each orbit their combined center of mass. X ...
... • The Moon doesn’t orbit the Earth. • The Earth doesn’t orbit the Sun. • What do they do? • They each orbit their combined center of mass. X ...
Source: https://www
... 1. The star will survive long enough for its planets to develop life. 2. The planets exist in a region that is the proper distance from the star for that planet (or its moons) to have water remain liquid (that is, not too cold or too hot). Because of these two statements, most of the stars that are ...
... 1. The star will survive long enough for its planets to develop life. 2. The planets exist in a region that is the proper distance from the star for that planet (or its moons) to have water remain liquid (that is, not too cold or too hot). Because of these two statements, most of the stars that are ...
Hinsdale Astro TEST
... 4. What was the method of discovery for this planet? Image C 5. Give the proper name of the deep sky object shown in the object. 6. What will happen to this object over the next 200,000 years? Image D 7. Give the proper name of the deep sky object shown in the object. 8. What is the name of the four ...
... 4. What was the method of discovery for this planet? Image C 5. Give the proper name of the deep sky object shown in the object. 6. What will happen to this object over the next 200,000 years? Image D 7. Give the proper name of the deep sky object shown in the object. 8. What is the name of the four ...
Is Anyone Out There? Solving the Drake Equation
... fs-p = fraction of stars with planets fp-e= fraction of planets that are “earthlike” fp-l = fraction of “earthlike” planets that develop life fl-i = fraction of above that develop intelligence fi-c= fraction of above that develop communication Tc = lifetime of communicative civilization Tg = age of ...
... fs-p = fraction of stars with planets fp-e= fraction of planets that are “earthlike” fp-l = fraction of “earthlike” planets that develop life fl-i = fraction of above that develop intelligence fi-c= fraction of above that develop communication Tc = lifetime of communicative civilization Tg = age of ...
Life Beyond our Solar System: Discovering New Planets
... (General physics) Neptune is 4.4 x 109 km away from the Earth. If we were to send an electromagnetic signal to its surface, how long would it take for the signal to come back to Earth? About 8 h (General physics) Do the same problem for the moon and compare it with the result from problem 1 (moon’s ...
... (General physics) Neptune is 4.4 x 109 km away from the Earth. If we were to send an electromagnetic signal to its surface, how long would it take for the signal to come back to Earth? About 8 h (General physics) Do the same problem for the moon and compare it with the result from problem 1 (moon’s ...
Extra-Solar Planets
... • Method 1 – Use the fact that the Sun and Planet corotate around their common centre of gravity. – So the star will be moving around a small ellipse whose size depends on the mass and distance of the planet. – Precise measurements of the doppler shift in the spectral lines of the star can show up t ...
... • Method 1 – Use the fact that the Sun and Planet corotate around their common centre of gravity. – So the star will be moving around a small ellipse whose size depends on the mass and distance of the planet. – Precise measurements of the doppler shift in the spectral lines of the star can show up t ...
Planets beyond the solar system
... the total light from the star. Since the planet is much smaller than the stars, the total light is reduced only by a few percent, even less for Earth-like planets. ...
... the total light from the star. Since the planet is much smaller than the stars, the total light is reduced only by a few percent, even less for Earth-like planets. ...
Pluto`s Bald Cousin
... Makemake, a dwarf planet in our Solar System, appears to have no atmosphere; it is bald! This means it’s not able to hold on to the few sunrays it receives at its distant location, which is even farther away from the Sun than its cousin, Pluto. Until a few years ago, Pluto was considered to be the m ...
... Makemake, a dwarf planet in our Solar System, appears to have no atmosphere; it is bald! This means it’s not able to hold on to the few sunrays it receives at its distant location, which is even farther away from the Sun than its cousin, Pluto. Until a few years ago, Pluto was considered to be the m ...
Pluto`s Bald Cousin
... Makemake, a dwarf planet in our Solar System, appears to have no atmosphere; it is bald! This means it’s not able to hold on to the few sunrays it receives at its distant location, which is even farther away from the Sun than its cousin, Pluto. Until a few years ago, Pluto was considered to be the m ...
... Makemake, a dwarf planet in our Solar System, appears to have no atmosphere; it is bald! This means it’s not able to hold on to the few sunrays it receives at its distant location, which is even farther away from the Sun than its cousin, Pluto. Until a few years ago, Pluto was considered to be the m ...
Hunting for Extrasolar Planets: Methods and Results
... Big surprise in 1995: Radial velocity curve of star 51 Pegasi shows large radial velocity amplitude and orbital period of days, not years! Must be giant planet very close to its parent star. ...
... Big surprise in 1995: Radial velocity curve of star 51 Pegasi shows large radial velocity amplitude and orbital period of days, not years! Must be giant planet very close to its parent star. ...
In the Realm of the Ice Giants
... – shows that bodies at least km in size formed! • and are still there • sign that planets are likely? – comet belts define the outer edges of planetary systems • is the outer Solar System typical in size / content? ...
... – shows that bodies at least km in size formed! • and are still there • sign that planets are likely? – comet belts define the outer edges of planetary systems • is the outer Solar System typical in size / content? ...
Document
... they will still make the background source appear (temporarily) brighter. We call this case gravitational microlensing. We can plot a light curve showing how the brightness of the background source changes with time. If the lensing star has a planet which also passes exactly between us and the backg ...
... they will still make the background source appear (temporarily) brighter. We call this case gravitational microlensing. We can plot a light curve showing how the brightness of the background source changes with time. If the lensing star has a planet which also passes exactly between us and the backg ...
Characteristics of the planets in the Solar System
... area beyond the immediate solar system with objects made mostly of ice and rock. It was predicted that as many as 50 Pluto-size objects and large may exist in this belt, so when not one, but two objects larger than Pluto were discovered, it was decided to re-define what a planet is, because the alte ...
... area beyond the immediate solar system with objects made mostly of ice and rock. It was predicted that as many as 50 Pluto-size objects and large may exist in this belt, so when not one, but two objects larger than Pluto were discovered, it was decided to re-define what a planet is, because the alte ...
The surface temperature of a planet
... But the average surface temperature of the Earth is ∼ 286 K (13 C). This is because we have ignored the greenhouse effect - the trapping of heat radiated by the surface by the atmosphere (see your lecture notes and the PHY229 wiki). For the Earth the greenhouse effect increses the surface temperatu ...
... But the average surface temperature of the Earth is ∼ 286 K (13 C). This is because we have ignored the greenhouse effect - the trapping of heat radiated by the surface by the atmosphere (see your lecture notes and the PHY229 wiki). For the Earth the greenhouse effect increses the surface temperatu ...
PDF
... On the 23 July 2015, NASA announced the discovery of Kepler-452b, the first exoplanet similar in size to our own planet (about 60% larger than Earth), orbiting around a star similar to our Sun (Kepler 452 is a G2V-type star) at about the same distance between Earth and Sun, within the habitable zone ...
... On the 23 July 2015, NASA announced the discovery of Kepler-452b, the first exoplanet similar in size to our own planet (about 60% larger than Earth), orbiting around a star similar to our Sun (Kepler 452 is a G2V-type star) at about the same distance between Earth and Sun, within the habitable zone ...
math behind the calculator
... The amount of energy given off by a star is directly related to its mass. For this program we are assuming that the star is a main sequence star, where its energy output is relatively easy to predict. A main sequence star is a star that is in the main part of its life cycle—it is not just becoming a ...
... The amount of energy given off by a star is directly related to its mass. For this program we are assuming that the star is a main sequence star, where its energy output is relatively easy to predict. A main sequence star is a star that is in the main part of its life cycle—it is not just becoming a ...
Astro 18 – Section Week 2
... Same thing occurs with light from stars, etc obs emit z emit ...
... Same thing occurs with light from stars, etc obs emit z emit ...
Astro 18 – Section Week 2
... Same thing occurs with light from stars, etc obs emit z emit ...
... Same thing occurs with light from stars, etc obs emit z emit ...
Gliese 581
Gliese 581 (/ˈɡliːzə/) is a star of spectral type M3V (a red dwarf) about 20 light years away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star to the Sun. Observations suggest that the star has a planetary system consisting of three known planets, designated Gliese 581 b, c, and e and a possibly confirmed planet, d, in order of discovery. Additional outer planets, which received the designations Gliese 581 f, and g have been proposed, but the evidence that led to the discovery claims has been shown to be the result of stellar activity mimicking the radial velocity variations due to orbiting planets.Gliese 581 has been the subject of a ""huge amount of attention"" in the quest to discover the first habitable extrasolar planet; first for c, and then d and g. Gliese 581 c, the first low-mass extrasolar planet found near a habitable zone, was discovered in April 2007. It has since been shown that under known terrestrial planet climate models, Gliese 581 c is likely to have a runaway greenhouse effect, and hence is probably too hot to be habitable, analogous to Venus. The proposed planets Gliese 581 d and Gliese 581 g also received attention as being located within the habitable zone, but their existence has subsequently been put into doubt by some authors.On 27 November 2012, the European Space Agency announced a debris disk, with at least ten times as many comets as the Solar System. This put constraints on possible planets beyond 0.75 AU.