Astronomy and Space articles
... Since writing recently about the first star to become visible in the evenings, which at this time of the year is Sirius, I have had a few questions about that star, and why it is so bright. Sirius is a brilliant star, visible high in our northern evening sky. It is quite easily identified by first l ...
... Since writing recently about the first star to become visible in the evenings, which at this time of the year is Sirius, I have had a few questions about that star, and why it is so bright. Sirius is a brilliant star, visible high in our northern evening sky. It is quite easily identified by first l ...
Test yourself on the crossword! Increase your knowledge
... This is because it is such a large planet (the gravitational force a planet exerts upon an object at the planet's surface is proportional to its mass and to the inverse of its radius squared). 9) The gravity on Uranus is only 91% of the gravity on Earth because it is such a large planet- gravity in ...
... This is because it is such a large planet (the gravitational force a planet exerts upon an object at the planet's surface is proportional to its mass and to the inverse of its radius squared). 9) The gravity on Uranus is only 91% of the gravity on Earth because it is such a large planet- gravity in ...
Discovering the Universe II
... – The tilt of the Earth's axis causes sunlight to hit different parts of the Earth more directly during the summer and less directly during the winter. – We can specify the position of an object in the local sky by its altitude above the horizon and its direction along the horizon. – The summer a ...
... – The tilt of the Earth's axis causes sunlight to hit different parts of the Earth more directly during the summer and less directly during the winter. – We can specify the position of an object in the local sky by its altitude above the horizon and its direction along the horizon. – The summer a ...
Module 17 Asteroids - Kapitolyo High School
... Where do many asteroids orbit? Many asteroids orbit the sun in a region between Mars and Jupiter. This area is called the asteroid belt. They follow a slightly elliptical path as they orbit the sun in the same direction as the planets. Do you think it is possible for an asteroid to be pulled out of ...
... Where do many asteroids orbit? Many asteroids orbit the sun in a region between Mars and Jupiter. This area is called the asteroid belt. They follow a slightly elliptical path as they orbit the sun in the same direction as the planets. Do you think it is possible for an asteroid to be pulled out of ...
On the probability of habitable planets.
... instance, deep subsurface aquifers are considered to be potential sites for remnant life, while on Venus it is speculated that some exotic lifeforms could be present in the liquid cloud droplets of the upper atmosphere. Class III habitats are planetary bodies where water oceans exist below the surfa ...
... instance, deep subsurface aquifers are considered to be potential sites for remnant life, while on Venus it is speculated that some exotic lifeforms could be present in the liquid cloud droplets of the upper atmosphere. Class III habitats are planetary bodies where water oceans exist below the surfa ...
A Planetary System Around Our Nearest Star is Emerging
... planet is as massive as Earth, only 13% more massive, although too hot for life. This new result opens the possibilit might be other Earth-size planets in the Alpha Centauri system, including some potentially habitable. The Alpha Centauri stellar system consists of three stars about 4.4 light years ...
... planet is as massive as Earth, only 13% more massive, although too hot for life. This new result opens the possibilit might be other Earth-size planets in the Alpha Centauri system, including some potentially habitable. The Alpha Centauri stellar system consists of three stars about 4.4 light years ...
The Solar System
... The Solar Dynamics Observatory is a NASA spacecraft launched in early 2010 is obtaining IMAX-like images of the sun every second of the day, generating more data than any NASA mission in history. The data will allow researchers to learn about solar storms and other phenomena that can cause blackouts ...
... The Solar Dynamics Observatory is a NASA spacecraft launched in early 2010 is obtaining IMAX-like images of the sun every second of the day, generating more data than any NASA mission in history. The data will allow researchers to learn about solar storms and other phenomena that can cause blackouts ...
A crater is a large, bowl-shaped hole found in solid, rocky surfaces
... A crater is a large, bowl-shaped hole found in solid, rocky surfaces. Terrestrial planets, moons, and asteroids all contain craters. Some craters form when meteoroids, asteroids, or comets smash into the surface of a planet or moon. These craters – called “impact craters” – are usually circular. The ...
... A crater is a large, bowl-shaped hole found in solid, rocky surfaces. Terrestrial planets, moons, and asteroids all contain craters. Some craters form when meteoroids, asteroids, or comets smash into the surface of a planet or moon. These craters – called “impact craters” – are usually circular. The ...
Celestial Systems
... Describe how the Earth orbits the Sun and the Moon orbits the Earth. Describe the Sun (i.e., a medium-size star, the largest body in our solar system, major source of energy for phenomena on Earth’s surface). Describe how planets, asteroids, and comets orbit the Sun. Describe meteors (e.g., ...
... Describe how the Earth orbits the Sun and the Moon orbits the Earth. Describe the Sun (i.e., a medium-size star, the largest body in our solar system, major source of energy for phenomena on Earth’s surface). Describe how planets, asteroids, and comets orbit the Sun. Describe meteors (e.g., ...
ASTR-100 - Jiri Brezina Teaching
... Looking ‘down’ on the Earth’s North Pole, both its axial rotation and revolution (orbiting) are counterclockwise (ccw). This is termed direct rotation, while the word retrograde is applied to the rotation opposite to the revolution. Objects with retrograde rotation have inclination to orbit greater ...
... Looking ‘down’ on the Earth’s North Pole, both its axial rotation and revolution (orbiting) are counterclockwise (ccw). This is termed direct rotation, while the word retrograde is applied to the rotation opposite to the revolution. Objects with retrograde rotation have inclination to orbit greater ...
EEn.1.1 Explain the Earth`s role as a body in space. EEn
... angular momentum, but Kepler did not know about this concept. ~The third Law is a quantitative relationship between the orbital period (time for a body to orbit Sun once) and the size of the orbit of the body (expressed as the semimajor axis a of the orbit). ~ Note that these La ...
... angular momentum, but Kepler did not know about this concept. ~The third Law is a quantitative relationship between the orbital period (time for a body to orbit Sun once) and the size of the orbit of the body (expressed as the semimajor axis a of the orbit). ~ Note that these La ...
The dying sun/ creation of elements
... • In a supernova, there are free neutrons made by destroying nuclei. ...
... • In a supernova, there are free neutrons made by destroying nuclei. ...
Word version
... cycle around the sky, moving through each of the constellation of their zodiac. When people today talk of the “Year of the Monkey” or the “Year of the Dragon,” the name refers to the constellation in which Jupiter appears that year. ...
... cycle around the sky, moving through each of the constellation of their zodiac. When people today talk of the “Year of the Monkey” or the “Year of the Dragon,” the name refers to the constellation in which Jupiter appears that year. ...
PYTS/ASTR 206 – The Sun
... Magnetic field lines inhibit convection where they intersect the surface Surface cools off – sunspot forms Sunspots are ~4500K ...
... Magnetic field lines inhibit convection where they intersect the surface Surface cools off – sunspot forms Sunspots are ~4500K ...
Unit 8 Chapter 28 Notes
... lunar orbit. This is because the orbit of the moon is not in the same plane as the orbit of Earth around the sun. The moon crosses the plane of Earth’s orbit only twice in each revolution around Earth. A solar eclipse will occur only if this crossing occurs when the moon is between Earth and the sun ...
... lunar orbit. This is because the orbit of the moon is not in the same plane as the orbit of Earth around the sun. The moon crosses the plane of Earth’s orbit only twice in each revolution around Earth. A solar eclipse will occur only if this crossing occurs when the moon is between Earth and the sun ...
The Wizard Test Maker
... (1) only less from March 21 to September 22 (2) always less (3) always greater (4) only greater from March 21 to September 22 ...
... (1) only less from March 21 to September 22 (2) always less (3) always greater (4) only greater from March 21 to September 22 ...
The Formation of Uranus and Neptune in the Jupiter
... and Saturn. In addition to the planetary-size objects, we included a trans-Saturnian disk of smaller objects stretching from 10 to 60 AU . In Series II and III, we investigated the evolution of a system where Jupiter grows rst. In Series II, we studied the behavior of four 15M cores distributed be ...
... and Saturn. In addition to the planetary-size objects, we included a trans-Saturnian disk of smaller objects stretching from 10 to 60 AU . In Series II and III, we investigated the evolution of a system where Jupiter grows rst. In Series II, we studied the behavior of four 15M cores distributed be ...
Week 10
... stars. Star A’s luminosity is 5 times higher than star B’s, and star A is 3 times farther away from you than star B. What is the ratio of the brightness of star A to the brightness of star B? (Enter the ratio as a two digit number: if the ratio is 2/3, ...
... stars. Star A’s luminosity is 5 times higher than star B’s, and star A is 3 times farther away from you than star B. What is the ratio of the brightness of star A to the brightness of star B? (Enter the ratio as a two digit number: if the ratio is 2/3, ...
Jupiter
... was able to estimate the speed of light by observing eclipses of the moons Galileo discovered. He deduced that light took longer to travel the extra distance when Earth was farther from Jupiter, compared to when the planets were closer. A few decades later, Isaac Newton used the orbits of the Galile ...
... was able to estimate the speed of light by observing eclipses of the moons Galileo discovered. He deduced that light took longer to travel the extra distance when Earth was farther from Jupiter, compared to when the planets were closer. A few decades later, Isaac Newton used the orbits of the Galile ...
The Fixed Idea of Astronomical Theory
... to work until our time Whi l e Laplace continued his work with ex emplary perseverance the sun protested loudly enough agains t his immobi lity ; he clearly dem on state d that he will not b e a fixe d p oint for the fi xed planes ; but it was in vain : the great mathematicians despise d his remonstra ...
... to work until our time Whi l e Laplace continued his work with ex emplary perseverance the sun protested loudly enough agains t his immobi lity ; he clearly dem on state d that he will not b e a fixe d p oint for the fi xed planes ; but it was in vain : the great mathematicians despise d his remonstra ...
Lecture 6
... • Based on the definition of a parsec , if star A has a parallax of 0.5 arcseconds and star B has a parallax of 0.75 arcseconds which one is farther from the Earth? • A. Star B is farther away because it has a ...
... • Based on the definition of a parsec , if star A has a parallax of 0.5 arcseconds and star B has a parallax of 0.75 arcseconds which one is farther from the Earth? • A. Star B is farther away because it has a ...
Night Sky
... straight up). The angle rise and set stars (including the sun) make with the horizon as they rise is the same for all rise and set stars for that observer. Stars near the celestial poles make small circles and may not pass the horizon plane. These stars are indicated by blue (northern hemisphere sta ...
... straight up). The angle rise and set stars (including the sun) make with the horizon as they rise is the same for all rise and set stars for that observer. Stars near the celestial poles make small circles and may not pass the horizon plane. These stars are indicated by blue (northern hemisphere sta ...
Orrery
An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.