B LOG - Science Centre
... The Dipper is part of a much larger star pattern, the constellation Ursa Major (Greater Bear) although it had a variety of meanings in many cultures. Most common is that of a bear or a ladle/dipper used for scooping water. Other representations include a plough, an ox or horse pulling a plough and t ...
... The Dipper is part of a much larger star pattern, the constellation Ursa Major (Greater Bear) although it had a variety of meanings in many cultures. Most common is that of a bear or a ladle/dipper used for scooping water. Other representations include a plough, an ox or horse pulling a plough and t ...
Milky Way I
... near the center move faster than those farther away • This produces a spiral structure but should quickly wind up after a few rotations and disappear • What then preserves the arms? ...
... near the center move faster than those farther away • This produces a spiral structure but should quickly wind up after a few rotations and disappear • What then preserves the arms? ...
night sky a field guide to the heavens
... things were now for the first time, if, I say, they were now suddenly presented to mortals beyond all expectation, what could have been named that would be more marvelous than these things, or that nations beforehand would less venture to believe could be? Nothing, me thinks: so wonderous strange ha ...
... things were now for the first time, if, I say, they were now suddenly presented to mortals beyond all expectation, what could have been named that would be more marvelous than these things, or that nations beforehand would less venture to believe could be? Nothing, me thinks: so wonderous strange ha ...
The Marine Sextant
... • A marine sextant is nothing more than a device designed to measure the angle between two objects with a great deal of precision. • In celestial navigation, these two objects are – a celestial body (star, sun, moon, or planet) – the visible horizon ...
... • A marine sextant is nothing more than a device designed to measure the angle between two objects with a great deal of precision. • In celestial navigation, these two objects are – a celestial body (star, sun, moon, or planet) – the visible horizon ...
rEVIEW CHAPTER 6
... gravitation several decades before Henry Cavendish did his experiment. It was not until he did his experiment that calculations using Newton’s equation could produce data from observations. Cavendish’s experiment yielded a value for G that is slightly higher than today’s accepted value of 6.67 3 1 ...
... gravitation several decades before Henry Cavendish did his experiment. It was not until he did his experiment that calculations using Newton’s equation could produce data from observations. Cavendish’s experiment yielded a value for G that is slightly higher than today’s accepted value of 6.67 3 1 ...
ISS Sighting Opportunities
... Saturday, January 4 Soon after dark, Sirius, the Dog Star, rises below Orion. And Procyon, the Little Dog Star, rises to the lower right of bright Jupiter. Which of them comes up first? It's Procyon if you're north of latitude 30° (Tijuana, New Orleans, Jacksonville), and Sirius if you're south of t ...
... Saturday, January 4 Soon after dark, Sirius, the Dog Star, rises below Orion. And Procyon, the Little Dog Star, rises to the lower right of bright Jupiter. Which of them comes up first? It's Procyon if you're north of latitude 30° (Tijuana, New Orleans, Jacksonville), and Sirius if you're south of t ...
WORD - Astrophysics
... how the interplay between gravity and nuclear reactions determine stellar evolution, and ultimately, the physical principles that explain the existence of some of the most exotic states of matter in the Universe: neutron stars and black holes. In spite of the undeniable progress made during the last ...
... how the interplay between gravity and nuclear reactions determine stellar evolution, and ultimately, the physical principles that explain the existence of some of the most exotic states of matter in the Universe: neutron stars and black holes. In spite of the undeniable progress made during the last ...
Introduction Introduction to to Astrophysics Astrophysics
... Astronomy is a fascinating and exciting field. For some it is a lifetime hobby, enjoyed from young children to centenarians. For others it is their vocation and becomes their profession. The word ‘astronomy’ itself derives from the Greek aster meaning ‘star’, and nomos meaning ‘law’, and originally ...
... Astronomy is a fascinating and exciting field. For some it is a lifetime hobby, enjoyed from young children to centenarians. For others it is their vocation and becomes their profession. The word ‘astronomy’ itself derives from the Greek aster meaning ‘star’, and nomos meaning ‘law’, and originally ...
The Occurrence and Architecture of Exoplanetary Systems
... Solar System. Isaac Newton realized that the Solar System is more orderly than required by the laws of motion and took this as evidence for God’s hand in creation. Pierre-Simon Laplace was inspired by the same facts to devise a mechanistic theory for the formation of the Solar System. Since then, it ...
... Solar System. Isaac Newton realized that the Solar System is more orderly than required by the laws of motion and took this as evidence for God’s hand in creation. Pierre-Simon Laplace was inspired by the same facts to devise a mechanistic theory for the formation of the Solar System. Since then, it ...
Lesson 55 – The Structure of the Universe - science
... The brightness of the star varied in a particular way (see Figure 3) and in 1912 Miss Henrietta Leavitt of Harvard College observatory discovered an important connection between the period and brightness. This is now known as the period-luminosity relationship. Many other stars were found to vary in ...
... The brightness of the star varied in a particular way (see Figure 3) and in 1912 Miss Henrietta Leavitt of Harvard College observatory discovered an important connection between the period and brightness. This is now known as the period-luminosity relationship. Many other stars were found to vary in ...
Trading Cards
... Asteroid Fact Sheet If all of the asteroids were combined into a ball, they would still be much smaller than the Earth’s moon. Asteroids orbit our Sun, a star, in a region of space between the orbits of Mars and Jupiter known as the Asteroid Belt. One day on asteroid Ida, for example, takes on ...
... Asteroid Fact Sheet If all of the asteroids were combined into a ball, they would still be much smaller than the Earth’s moon. Asteroids orbit our Sun, a star, in a region of space between the orbits of Mars and Jupiter known as the Asteroid Belt. One day on asteroid Ida, for example, takes on ...
12 Comets, Kuiper Belt Objects, and Pluto
... require more energetic photons. At even higher energies there can be additional reactions due to photoionization. Other common molecules are HCN, CH3 CN, and (H2 CO)n . The dark color of cometary nuclei is mostly due to carbon-rich compounds and dust that remain as the comet’s ice sublimates. Spectr ...
... require more energetic photons. At even higher energies there can be additional reactions due to photoionization. Other common molecules are HCN, CH3 CN, and (H2 CO)n . The dark color of cometary nuclei is mostly due to carbon-rich compounds and dust that remain as the comet’s ice sublimates. Spectr ...
The Fixed Idea of Astronomical Theory
... This position of all plane ts terior ones are in opposition was taken into consideration alrea dy by th e ancients atwl its re currence called the Great P erio d That this Great P erio d has b een very much enlarged b y the two newl y discovered planets U ranus and N e ptunus is clearly apparent E a ...
... This position of all plane ts terior ones are in opposition was taken into consideration alrea dy by th e ancients atwl its re currence called the Great P erio d That this Great P erio d has b een very much enlarged b y the two newl y discovered planets U ranus and N e ptunus is clearly apparent E a ...
Dust in Space - Max-Planck
... The further away a galaxy is, however, the more difficult verification becomes. It was thus hailed as a great breakthrough when, a few years ago, scientists succeeded in measuring the thermal emission of dust in the most distant known quasars. The latter are the ultrabright central regions of galaxi ...
... The further away a galaxy is, however, the more difficult verification becomes. It was thus hailed as a great breakthrough when, a few years ago, scientists succeeded in measuring the thermal emission of dust in the most distant known quasars. The latter are the ultrabright central regions of galaxi ...
10 New Constellations
... Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a three star system located around 90 light ...
... Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a three star system located around 90 light ...
Printable Version of this information
... What we are going to talk about today -- seasons! What are seasons? While we might think there is a "correct" answer to this question, in actuality it is a vague question. In addition to winter, spring, summer and fall, here we also have hurricane season. Tropical climates typically have a wet and a ...
... What we are going to talk about today -- seasons! What are seasons? While we might think there is a "correct" answer to this question, in actuality it is a vague question. In addition to winter, spring, summer and fall, here we also have hurricane season. Tropical climates typically have a wet and a ...
Picture: Alnitak is the left-hand star in Orion`s Belt. Image: NASA
... carbon/oxygen ratios that are typically four to five times higher than those of normal red giants and show little trace of the light metal oxide bands that are the usual red giant hallmark. They resemble S stars in their relative proportion of heavy and light metals, but contain far more carbon in t ...
... carbon/oxygen ratios that are typically four to five times higher than those of normal red giants and show little trace of the light metal oxide bands that are the usual red giant hallmark. They resemble S stars in their relative proportion of heavy and light metals, but contain far more carbon in t ...
Introduction to Telescopes
... visually even with the biggest telescopes, so did the introduction of ‘charge-coupled devices’ (or CCDs) two decades ago. A CCD is a small electronic chip divided into a large number of little squares, so-called ‘pixels’. When light hits one of these pixels, the material of the CCD emits electrons w ...
... visually even with the biggest telescopes, so did the introduction of ‘charge-coupled devices’ (or CCDs) two decades ago. A CCD is a small electronic chip divided into a large number of little squares, so-called ‘pixels’. When light hits one of these pixels, the material of the CCD emits electrons w ...
Star Finder
... 6p.m. to 6 a. m. We assume the planet is not visible when the sun is up. The latter is not true since planets are visible at twilight and even in the day for the brighter ones. This last calculation of HOURS VISIBLE is a bit involved and you may need time at home to figure it out! If the planet is n ...
... 6p.m. to 6 a. m. We assume the planet is not visible when the sun is up. The latter is not true since planets are visible at twilight and even in the day for the brighter ones. This last calculation of HOURS VISIBLE is a bit involved and you may need time at home to figure it out! If the planet is n ...
The Human Orrery - Armagh Observatory
... when) their orbits cross that of the Earth. What times of year are these showers? When are the danger times for Venus or Mars? From which constellation do the meteors appear to come from? 3. Astrology: How many constellations does the Sun pass through in a year? In which does it spend the longest ti ...
... when) their orbits cross that of the Earth. What times of year are these showers? When are the danger times for Venus or Mars? From which constellation do the meteors appear to come from? 3. Astrology: How many constellations does the Sun pass through in a year? In which does it spend the longest ti ...
Planet formation Abstract Megan K Pickett and Andrew J Lim
... universe, but they are not among the extrasolar planets so far detected and, at any rate, their small masses make them invisible to detection by current spectroscopic methods. It is possible that Uranus and Neptune are examples of such objects, although they might owe their relatively small gaseous ...
... universe, but they are not among the extrasolar planets so far detected and, at any rate, their small masses make them invisible to detection by current spectroscopic methods. It is possible that Uranus and Neptune are examples of such objects, although they might owe their relatively small gaseous ...
Orbit and Spin
... temperature is about 9980° Fahrenheit (5800 kelvins) and its interior temperature is as high as about 28 million° F (15,500,000 kelvins). Some of that energy reaches Earth and keeps our surface temperatures relatively moderate; without the Sun our planet would be dark, icy and unable to sustain life ...
... temperature is about 9980° Fahrenheit (5800 kelvins) and its interior temperature is as high as about 28 million° F (15,500,000 kelvins). Some of that energy reaches Earth and keeps our surface temperatures relatively moderate; without the Sun our planet would be dark, icy and unable to sustain life ...
ppt
... There are only two astronomical bodies that have a radius ~ 1.5 REarth: 1. White Dwarf 2. A terrestrial planet White Dwarfs have a mass of ~ 1 Solar Mass, so the radial velocity amplitude should be ~ 100s km/s. This is excluded by low precision radial velocity measurements. ...
... There are only two astronomical bodies that have a radius ~ 1.5 REarth: 1. White Dwarf 2. A terrestrial planet White Dwarfs have a mass of ~ 1 Solar Mass, so the radial velocity amplitude should be ~ 100s km/s. This is excluded by low precision radial velocity measurements. ...
z - STScI
... – Angular resolution and wide field to survey 100,000 protogalaxies and their environments (to z ~ 5) – mid infrared imaging and spectroscopy to pinpoint the nature of the hidden stars and Active Galactic Nuclei ...
... – Angular resolution and wide field to survey 100,000 protogalaxies and their environments (to z ~ 5) – mid infrared imaging and spectroscopy to pinpoint the nature of the hidden stars and Active Galactic Nuclei ...
Uranus
... o Spacecraft voyager2 has visited Uranus to collect information about the planet. o Uranus was the first planet discovered by scientists. o Uranus was discovered accidentally because William Herschel was looking at the stars with his telescope when he spotted Uranus. ...
... o Spacecraft voyager2 has visited Uranus to collect information about the planet. o Uranus was the first planet discovered by scientists. o Uranus was discovered accidentally because William Herschel was looking at the stars with his telescope when he spotted Uranus. ...
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.