Document
... Even if the multiple images are too close together to be resolved separately, 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 t ...
... Even if the multiple images are too close together to be resolved separately, 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 t ...
Lecture 1: Properties of the Solar System Properties of the Solar
... 4. The planets differ in composition. Their composition varies roughly with distance from the Sun: dense, metal-rich planets are in the inner part and giant, hydrogenrich planets are in the outer part. 5. Meteorites differ in chemical and geologic properties from the planets and the Moon. 6. The rot ...
... 4. The planets differ in composition. Their composition varies roughly with distance from the Sun: dense, metal-rich planets are in the inner part and giant, hydrogenrich planets are in the outer part. 5. Meteorites differ in chemical and geologic properties from the planets and the Moon. 6. The rot ...
1 Exoplanets 2 Types of Exoplanets
... The habitable zone is the region around a star in which the conditions are just right for a planet to have liquid water on its surface. Here on Earth, so far as we know, all life must have access to liquid water to survive. Therefore, a planet is considered “habitable” if it has liquid water. This z ...
... The habitable zone is the region around a star in which the conditions are just right for a planet to have liquid water on its surface. Here on Earth, so far as we know, all life must have access to liquid water to survive. Therefore, a planet is considered “habitable” if it has liquid water. This z ...
Planets - Cardinal Hayes High School
... How do we describe the Inner Planets? Inner Planets separated intoare two planets • Small size The Planets are Inner groups, the Inner and Outercalled planets. Mercury, Terrestrial • Rocky composition (mostly Venus, Planetsplanets solid) Earth, and Mars, are the closest to the sun. These four plane ...
... How do we describe the Inner Planets? Inner Planets separated intoare two planets • Small size The Planets are Inner groups, the Inner and Outercalled planets. Mercury, Terrestrial • Rocky composition (mostly Venus, Planetsplanets solid) Earth, and Mars, are the closest to the sun. These four plane ...
Astro 27 Solar System Formation and ExoPlanets Slide Show
... • Angular momentum came from gravitational pull from nearby other stars in our cluster, as proto-solar nebula collapsed • This angular momentum only allowed collapse to a certain size disk, and friction caused material to settle into a disk • Gravity caused proto-planets to form, coalesce into plane ...
... • Angular momentum came from gravitational pull from nearby other stars in our cluster, as proto-solar nebula collapsed • This angular momentum only allowed collapse to a certain size disk, and friction caused material to settle into a disk • Gravity caused proto-planets to form, coalesce into plane ...
Objects In Space -- research questions
... 5. Can we see them from Earth? If so, what do they look like? ...
... 5. Can we see them from Earth? If so, what do they look like? ...
Extra-solar planets
... Kepler’s findings Kepler’s planets are pouring in thick and fast. Here are some (preliminary) statistics on what has been found so far. • about half of Sun-like stars have at least one planet with an orbital period of 100 days or fewer • systems with multiple transiting planets are common (17% of h ...
... Kepler’s findings Kepler’s planets are pouring in thick and fast. Here are some (preliminary) statistics on what has been found so far. • about half of Sun-like stars have at least one planet with an orbital period of 100 days or fewer • systems with multiple transiting planets are common (17% of h ...
Planetary Diversity - MIT Computer Science and Artificial
... orbit around stars but not doing what a star does (or used to do in an earlier life), which is fusion. All scientific labeling is secondary to the essenceof science, and labels such as "planet" exist only to help us talk to each other. Dust, asteroid belts, and cometary belts or clouds are just as i ...
... orbit around stars but not doing what a star does (or used to do in an earlier life), which is fusion. All scientific labeling is secondary to the essenceof science, and labels such as "planet" exist only to help us talk to each other. Dust, asteroid belts, and cometary belts or clouds are just as i ...
See the plan
... EAGLE WAS THE NAME OF THE LUNAR MODULE THAT ALLOWED APOLLO 11’S TEAM TO WALK ON THE MOON, ON JULY 21ST, 1969. ...
... EAGLE WAS THE NAME OF THE LUNAR MODULE THAT ALLOWED APOLLO 11’S TEAM TO WALK ON THE MOON, ON JULY 21ST, 1969. ...
Which exoEarths should we search for life
... be found within the next couple of years, and so the time is right to discuss exactly what factors might come together to make such planets more, or less, suitable for life to develop and thrive. Throughout the history of astronomy it seems that, once the first member of a population of objects has ...
... be found within the next couple of years, and so the time is right to discuss exactly what factors might come together to make such planets more, or less, suitable for life to develop and thrive. Throughout the history of astronomy it seems that, once the first member of a population of objects has ...
Detectability of Earth-like Planets by Direct Imaging - RIT
... = 5, we find that the total integration time to image each HZ once is ~200 days. • In less than 5 years each HZ could be searched 5 times to SNR = 5. ...
... = 5, we find that the total integration time to image each HZ once is ~200 days. • In less than 5 years each HZ could be searched 5 times to SNR = 5. ...
Alone in the Universe - Let There Be Light : The Book
... systems will have a set of rocky inner planets, with atmospheres produced by outgassing, weathering and escape, for the same reasons that our own rocky inner planets have atmospheres. Judging from our own example, the chances seem good that one of these inner planets will orbit its star at the “righ ...
... systems will have a set of rocky inner planets, with atmospheres produced by outgassing, weathering and escape, for the same reasons that our own rocky inner planets have atmospheres. Judging from our own example, the chances seem good that one of these inner planets will orbit its star at the “righ ...
Slide 1
... • Typical time scale for a stellar event is 1 to 2 months. • If the ’lens’ star has a planet, its gravity may also contribute to lensing the light from the ’source’. • This produces a secondary peak in the light curve. • Typical exoplanetary deviation lasts only hours to days. ...
... • Typical time scale for a stellar event is 1 to 2 months. • If the ’lens’ star has a planet, its gravity may also contribute to lensing the light from the ’source’. • This produces a secondary peak in the light curve. • Typical exoplanetary deviation lasts only hours to days. ...
Planet formation - problems and future
... starting evolution of planetary systems. The most of the authors pay attention on interaction between solid bodies (planetesimals) and gas arround existing stars. In many used methods self-gravity is not included in calculations. More interesting for us is the beginning of planet formation from unif ...
... starting evolution of planetary systems. The most of the authors pay attention on interaction between solid bodies (planetesimals) and gas arround existing stars. In many used methods self-gravity is not included in calculations. More interesting for us is the beginning of planet formation from unif ...
ppt
... Multiple-giant cases can explain high-eccentricity orbits by resonances or close encounters between giants Not clear how difficult it is for Earth-mass planets to form and survive under giant planet migration Quite likely every planetary system has lost planets ... ...
... Multiple-giant cases can explain high-eccentricity orbits by resonances or close encounters between giants Not clear how difficult it is for Earth-mass planets to form and survive under giant planet migration Quite likely every planetary system has lost planets ... ...
The Planetarium Fleischmann Planetarium
... The fact that Spitzer can still do any science work at all still can be credited to some earlyin-the-game, innovative thinking. Spitzer was initially loaded with enough coolant to keep its three temperature-sensitive science instruments running for at least two-anda-half years. This "cryo" mission e ...
... The fact that Spitzer can still do any science work at all still can be credited to some earlyin-the-game, innovative thinking. Spitzer was initially loaded with enough coolant to keep its three temperature-sensitive science instruments running for at least two-anda-half years. This "cryo" mission e ...
Extrasolar Planets - University of Maryland Astronomy
... Our inability to detect Earth-mass planets around normal stars means that there is lingering uncertainty about how common they are. In systems with “hot Jupiters” (with small orbital periods), it is thought that the process of moving in from the much larger formation radius would have kicked out any ...
... Our inability to detect Earth-mass planets around normal stars means that there is lingering uncertainty about how common they are. In systems with “hot Jupiters” (with small orbital periods), it is thought that the process of moving in from the much larger formation radius would have kicked out any ...
Chapter 2 - personal.kent.edu
... • Predicted the order of the planets – Mercury, Venus, Earth, Mars, Jupiter, Saturn – The only six visible with the naked eye – The Th telescope l had h d not yet been b invented i d ...
... • Predicted the order of the planets – Mercury, Venus, Earth, Mars, Jupiter, Saturn – The only six visible with the naked eye – The Th telescope l had h d not yet been b invented i d ...
arXiv:0712.2297v1 [astro
... telescopes. Consequently, more than 66% of our target stars are fainter than V=8 mag. The observing scheme follows the standard practices implemented in precision radial velocity measurements with the iodine cell (Marcy & Butler 1992). The spectral data used for RV measurements are extracted from th ...
... telescopes. Consequently, more than 66% of our target stars are fainter than V=8 mag. The observing scheme follows the standard practices implemented in precision radial velocity measurements with the iodine cell (Marcy & Butler 1992). The spectral data used for RV measurements are extracted from th ...
A brief history of extra-solar planets - X
... Searching for Earths by transit method Launched last year by NASA Aims to find an Earth around a Sun-like star in a one year orbit Need three transits to confirm So mission lasts at least three years… ...
... Searching for Earths by transit method Launched last year by NASA Aims to find an Earth around a Sun-like star in a one year orbit Need three transits to confirm So mission lasts at least three years… ...
MAPLE: Reflected Light from Exoplanets with a 50
... 1/100,000 of the parent star. However, all of these planetary systems are believed to be too young, being less than one hundred million years old, to host any kind of life. In mature planetary systems, i.e. greater than one billion years old, such as our Sun and most of the stars in the solar neighb ...
... 1/100,000 of the parent star. However, all of these planetary systems are believed to be too young, being less than one hundred million years old, to host any kind of life. In mature planetary systems, i.e. greater than one billion years old, such as our Sun and most of the stars in the solar neighb ...
Microlensing
... • One has been giving headaches to Bennett since late 2004. • The other one is much further down the road… (Dong et al. 2008) ...
... • One has been giving headaches to Bennett since late 2004. • The other one is much further down the road… (Dong et al. 2008) ...
WARM-UP # 32 Which planets are the terrestrial planets and which
... meteor, meteorite, meteoroid? The Quick Trick: Oids are outside the atmosphere, ites are inside it, and meteors are in between. ...
... meteor, meteorite, meteoroid? The Quick Trick: Oids are outside the atmosphere, ites are inside it, and meteors are in between. ...
Structure of the Solar System - Beck-Shop
... has two foci and according to the first law the Sun occupies one focus while the other one is empty (Fig. 1.2a). In Fig. 1.2b each shaded region represents the area swept out by a line from the Sun to an orbiting planet in equal time intervals, and the second law states that these areas are equal. Th ...
... has two foci and according to the first law the Sun occupies one focus while the other one is empty (Fig. 1.2a). In Fig. 1.2b each shaded region represents the area swept out by a line from the Sun to an orbiting planet in equal time intervals, and the second law states that these areas are equal. Th ...
Kepler (spacecraft)
Kepler is a space observatory launched by NASA to discover Earth-like planets orbiting other stars. The spacecraft, named after the German Renaissance astronomer Johannes Kepler, was launched on March 7, 2009.Designed to survey a portion of our region of the Milky Way to discover dozens of Earth-size extrasolar planets in or near the habitable zone and estimate how many of the billions of stars in the Milky Way have such planets, Kepler's sole instrument is a photometer that continually monitors the brightness of over 145,000 main sequence stars in a fixed field of view. This data is transmitted to Earth, then analyzed to detect periodic dimming caused by extrasolar planets that cross in front of their host star.Kepler is part of NASA's Discovery Program of relatively low-cost, focused primary science missions. The telescope's construction and initial operation were managed by NASA's Jet Propulsion Laboratory, with Ball Aerospace responsible for developing the Kepler flight system. The Ames Research Center is responsible for the ground system development, mission operations since December 2009, and scientific data analysis. The initial planned lifetime was 3.5 years, but greater-than-expected noise in the data, from both the stars and the spacecraft, meant additional time was needed to fulfill all mission goals. Initially, in 2012, the mission was expected to last until 2016, but this would only have been possible if all remaining reaction wheels used for pointing the spacecraft remained reliable. On May 11, 2013, a second of four reaction wheels failed, disabling the collection of science data and threatening the continuation of the mission.On August 15, 2013, NASA announced that they had given up trying to fix the two failed reaction wheels. This meant the current mission needed to be modified, but it did not necessarily mean the end of planet-hunting. NASA had asked the space science community to propose alternative mission plans ""potentially including an exoplanet search, using the remaining two good reaction wheels and thrusters"". On November 18, 2013, the K2 ""Second Light"" proposal was reported. This would include utilizing the disabled Kepler in a way that could detect habitable planets around smaller, dimmer red dwarfs. On May 16, 2014, NASA announced the approval of the K2 extension.As of January 2015, Kepler and its follow-up observations had found 1,013 confirmed exoplanets in about 440 stellar systems, along with a further 3,199 unconfirmed planet candidates. Four planets have been confirmed through Kepler 's K2 mission. In November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. It is estimated that 11 billion of these planets may be orbiting Sun-like stars. The nearest such planet may be 3.7 parsecs (12 ly) away, according to the scientists.On January 6, 2015, NASA announced the 1000th confirmed exoplanet discovered by the Kepler Space Telescope. Four of the newly confirmed exoplanets were found to orbit within habitable zones of their related stars: three of the four, Kepler-438b, Kepler-442b and Kepler-452b, are near-Earth-size and likely rocky; the fourth, Kepler-440b, is a super-Earth.