April News Letter - Boise Astronomical Society
... The Lyrid meteor shower peaks on the night of the 21st and 22nd. Since it’s been over three months since our last good meteor shower, the Lyrids make a great break from the drought, even though it’s not a particularly strong shower. The radiant of the Lyrids appears beneath the bright star Vega, whi ...
... The Lyrid meteor shower peaks on the night of the 21st and 22nd. Since it’s been over three months since our last good meteor shower, the Lyrids make a great break from the drought, even though it’s not a particularly strong shower. The radiant of the Lyrids appears beneath the bright star Vega, whi ...
Event Booklet - Exoplanets I Conference
... I will provide an overview of exoplanet discoveries from the NASA K2 mission and highlight some of the particularly unique and exciting discoveries made so far. K2 is a community-driven mission that uses the Kepler spacecraft to observe different fields along the ecliptic in ~80 day campaigns. Over ...
... I will provide an overview of exoplanet discoveries from the NASA K2 mission and highlight some of the particularly unique and exciting discoveries made so far. K2 is a community-driven mission that uses the Kepler spacecraft to observe different fields along the ecliptic in ~80 day campaigns. Over ...
Celestial Highlights for October and early November 2015 During
... lower left of Moon, and Jupiter within 8° above the Moon. Higher yet, in order: dim red Mars, brilliant Venus, and Regulus to Venus’ upper left. Sun. Oct. 11: Last chance to see the thin crescent Moon in the morning sky in this cycle of phases. Just 37 hours before New, it’s a few degrees above the ...
... lower left of Moon, and Jupiter within 8° above the Moon. Higher yet, in order: dim red Mars, brilliant Venus, and Regulus to Venus’ upper left. Sun. Oct. 11: Last chance to see the thin crescent Moon in the morning sky in this cycle of phases. Just 37 hours before New, it’s a few degrees above the ...
More on Stars and the Sky
... What is the distance to a star in parsecs if its parallax is 0.1” When you drive on the highway, nearby things pass quickly, while far off objects appear stationary. Why? What is the typical parallax of a nearby star? Why is it not possible to measure the parallax better than 0.01” from ground based ...
... What is the distance to a star in parsecs if its parallax is 0.1” When you drive on the highway, nearby things pass quickly, while far off objects appear stationary. Why? What is the typical parallax of a nearby star? Why is it not possible to measure the parallax better than 0.01” from ground based ...
EarthScience-Astronomy-TheSolarSystem
... layer of water, which responds to the gravitational attraction of the moon and the Sun with a daily cycle of high and low tides. c. The Moon’s gravity pulls on the Earth, and pulls the water towards it. The water moves up into a slight bulge on the side of the Earth that faces the Moon. d. At the sa ...
... layer of water, which responds to the gravitational attraction of the moon and the Sun with a daily cycle of high and low tides. c. The Moon’s gravity pulls on the Earth, and pulls the water towards it. The water moves up into a slight bulge on the side of the Earth that faces the Moon. d. At the sa ...
Where planets are formed: Protoplanetary disk evolution and planet
... • During the dynamical evolution of clusters, stars orbit around the cluster center, and sometime they can get very close each other. • A close encounter between a disk-bearing star and another star can have crucial consequences on the disk evolution, resulting in: • Significant mass loss from the d ...
... • During the dynamical evolution of clusters, stars orbit around the cluster center, and sometime they can get very close each other. • A close encounter between a disk-bearing star and another star can have crucial consequences on the disk evolution, resulting in: • Significant mass loss from the d ...
How Big is the Universe
... gravitational force depends on how much mass-the amount of matter in an object-the objects have and how far apart they are from each other. The greater an object’s mass, the greater the force of attraction; in addition, the greater the distance between objects, the smaller the force of attraction. ...
... gravitational force depends on how much mass-the amount of matter in an object-the objects have and how far apart they are from each other. The greater an object’s mass, the greater the force of attraction; in addition, the greater the distance between objects, the smaller the force of attraction. ...
Advanced STARS - WordPress.com
... It is known as the red planet due to its appearance when seen from earth at night It is the only planet besides Earth that has seasons It has a rotational period nearly the same as earth Its orbit takes 687 days Mars has 2 moons It has the largest dust storms in the solar system It has ...
... It is known as the red planet due to its appearance when seen from earth at night It is the only planet besides Earth that has seasons It has a rotational period nearly the same as earth Its orbit takes 687 days Mars has 2 moons It has the largest dust storms in the solar system It has ...
Exploration of the Kuiper Belt by High-Precision Photometric
... modulus of VI is 4.5, and the moduli of VI for the three events are, respectively, 5.6, 7.2, and 5.3. Having shown that the events are neither related to the observation’s conditions nor to the Earth’s atmosphere, we compare them to diffraction profiles of interplanetary objects. The synthetic prof ...
... modulus of VI is 4.5, and the moduli of VI for the three events are, respectively, 5.6, 7.2, and 5.3. Having shown that the events are neither related to the observation’s conditions nor to the Earth’s atmosphere, we compare them to diffraction profiles of interplanetary objects. The synthetic prof ...
Moon Search Algorithms for NASA`s Dawn
... moons of Mars which were later named Phobos and Deimos, with the 26-inch Refractor Telescope at the Naval Observatory in Washington D.C. [12-13]. With advances in imaging instruments and technologies as well as robotic exploration of the outer solar system, there has been an increase in satellite se ...
... moons of Mars which were later named Phobos and Deimos, with the 26-inch Refractor Telescope at the Naval Observatory in Washington D.C. [12-13]. With advances in imaging instruments and technologies as well as robotic exploration of the outer solar system, there has been an increase in satellite se ...
How to Directly Image a Habitable Planet Around Alpha Centauri
... Earth twin in the HZ would be around every nearby star out to 20pc (color of the circle represents the color or type of the star and area of the circle is proportional to apparent planet brightness). Ground-based ELTs and next generation spacebased imagers have the potential to directly image and ta ...
... Earth twin in the HZ would be around every nearby star out to 20pc (color of the circle represents the color or type of the star and area of the circle is proportional to apparent planet brightness). Ground-based ELTs and next generation spacebased imagers have the potential to directly image and ta ...
A Human-Powered Orrery: Connecting Learners with the Night Sky*
... motions each of the planets around the Sun. For Venus, Earth, and Mars, each circle represents 16 days of orbital motion. Because Mercury moves much faster in its orbit, the circles are separated by 8 day intervals. Use Table 1 below to find where a planet is located on any given date. We use six al ...
... motions each of the planets around the Sun. For Venus, Earth, and Mars, each circle represents 16 days of orbital motion. Because Mercury moves much faster in its orbit, the circles are separated by 8 day intervals. Use Table 1 below to find where a planet is located on any given date. We use six al ...
You in Outer Space Curriculum Map
... have a very different experience with the interactions of the Sun, Earth, and its moon than if I were to live in Australia or Alaska. These interactions cannot be ignored. 2. At certain times of the year, there is more sunlight than at others. 3. There are many stories and legends that people have i ...
... have a very different experience with the interactions of the Sun, Earth, and its moon than if I were to live in Australia or Alaska. These interactions cannot be ignored. 2. At certain times of the year, there is more sunlight than at others. 3. There are many stories and legends that people have i ...
StarWalkKiDS manual en
... occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle. ...
... occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle. ...
General Astrophysics And Comparative Planetology
... was reduced when Pluto’s icy nature was guessed. Finally the Charon-Pluto eclipses during the late 1980s constrained Pluto’s radius to be much smaller—0.18 Earth radii. Sedna is a recently discovered small body in a highly elliptical orbit; it is currently 90 AU from the Sun. A nondetection of Sedna ...
... was reduced when Pluto’s icy nature was guessed. Finally the Charon-Pluto eclipses during the late 1980s constrained Pluto’s radius to be much smaller—0.18 Earth radii. Sedna is a recently discovered small body in a highly elliptical orbit; it is currently 90 AU from the Sun. A nondetection of Sedna ...
A rocky planet transiting a nearby low-mass star
... The distance to GJ 1132 has been measured through trigonometric parallax to be 12.04"±"0.24 parsecs17, a value that we independently validate with MEarth astrometry (see Methods). Together with empirical relations among the intrinsic luminosities, masses and radii of Mdwarf stars18, 19, the parallax ...
... The distance to GJ 1132 has been measured through trigonometric parallax to be 12.04"±"0.24 parsecs17, a value that we independently validate with MEarth astrometry (see Methods). Together with empirical relations among the intrinsic luminosities, masses and radii of Mdwarf stars18, 19, the parallax ...
sc engl 3 mini The Sun test
... while Pluto has the longest because it is farthest from the sun. Mercury and Pluto take different amounts of time to orbit the sun because they are different sizes. Mercury has the shortest orbit around the sun because it is closer to the sun than Pluto, which is about the same distance from the sun ...
... while Pluto has the longest because it is farthest from the sun. Mercury and Pluto take different amounts of time to orbit the sun because they are different sizes. Mercury has the shortest orbit around the sun because it is closer to the sun than Pluto, which is about the same distance from the sun ...
Flagship imaging SAG report
... mission has insufficient scientific merit and should be canceled—are herein called “Must” requirements. b. In place of baseline and goal (stretch) mission requirements, we list a number of “Discriminators,” each of which is a criterion that represents added value in the science harvest. If there is ...
... mission has insufficient scientific merit and should be canceled—are herein called “Must” requirements. b. In place of baseline and goal (stretch) mission requirements, we list a number of “Discriminators,” each of which is a criterion that represents added value in the science harvest. If there is ...
Astronomy - Surfin` Through the Solar System
... 2. The teacher will read What Makes Day and Night to the class. On pages 2023, there is an activity that will aid in the discovery of planetary motion. 3. To reinforce understanding of planetary motion, the students will be divided into groups of three. One student in each group will represent the s ...
... 2. The teacher will read What Makes Day and Night to the class. On pages 2023, there is an activity that will aid in the discovery of planetary motion. 3. To reinforce understanding of planetary motion, the students will be divided into groups of three. One student in each group will represent the s ...
28 The solar system object in the photograph below is 56 kilometers
... 53 The photograph below shows an impact crater approximately 1 mile wide located in Diablo Canyon, Arizona. Describe the event that produced this crater. [1] Barringer Crater, Arizona, U.S.A. (photo courtesy of NASA) ...
... 53 The photograph below shows an impact crater approximately 1 mile wide located in Diablo Canyon, Arizona. Describe the event that produced this crater. [1] Barringer Crater, Arizona, U.S.A. (photo courtesy of NASA) ...
GravitEn
... Everyone observes the fanciful behavior of clouds. They can join together, and then destroy. They can fly with large velocity, but at windless days, they can be in the air on one place. Only from dark clouds, the droplets of rain fall on the earth. The small droplets fall very slowly; large ones fal ...
... Everyone observes the fanciful behavior of clouds. They can join together, and then destroy. They can fly with large velocity, but at windless days, they can be in the air on one place. Only from dark clouds, the droplets of rain fall on the earth. The small droplets fall very slowly; large ones fal ...
The Formation of Systems with Tightly
... sizes and q (dN/ds ∝ sq ). Figure 2 shows the results for five different ensembles. Each ensemble contains range of solid sizes (smin – smax : 10 µm – 1 km, 100 µm – 10 km, and 1 mm – 100 km) with either q = −3, −3.5, or q = −4, which is within the range of plausible dN/ds distributions (e.g., Pan & ...
... sizes and q (dN/ds ∝ sq ). Figure 2 shows the results for five different ensembles. Each ensemble contains range of solid sizes (smin – smax : 10 µm – 1 km, 100 µm – 10 km, and 1 mm – 100 km) with either q = −3, −3.5, or q = −4, which is within the range of plausible dN/ds distributions (e.g., Pan & ...
Origin of the Earth and of the Solar System
... Our actual stat of knowledge is, that the first planetesimals in our Solar system formed 4 567 million years ago within the protosolar cloud (with an uncertainty of just 2 million years). Right: Ca/Al-rich inclusion within Allende-Meteorite with a diameter of ~1 cm (the oldest material, which could ...
... Our actual stat of knowledge is, that the first planetesimals in our Solar system formed 4 567 million years ago within the protosolar cloud (with an uncertainty of just 2 million years). Right: Ca/Al-rich inclusion within Allende-Meteorite with a diameter of ~1 cm (the oldest material, which could ...
Circular ac
... exist on the surface of the planet. It was described as being one of the most Earth-like planets, in terms of size and temperature, yet found.[1][7] It is outside of the zone (around 0.02 AU) where tidal forces from its host star would be ...
... exist on the surface of the planet. It was described as being one of the most Earth-like planets, in terms of size and temperature, yet found.[1][7] It is outside of the zone (around 0.02 AU) where tidal forces from its host star would be ...
IAU definition of planet
The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.