Stargazing
... see stars scattered across the black expanse that we call our universe. If you’re lucky, you might be able to spot some stars that look bigger than others—they shine brighter and attract our attention more than their smaller neighbors do. Youmightwonder:why ...
... see stars scattered across the black expanse that we call our universe. If you’re lucky, you might be able to spot some stars that look bigger than others—they shine brighter and attract our attention more than their smaller neighbors do. Youmightwonder:why ...
guide to orion 3-d flythrough
... The central area of the nebula is called the Trapezium cluster. It is dominated by four young, massive stars in a kite-like arrangement. The brightest of these stars, which has a luminosity 100,000 times that of the Sun, provides the energy that creates the nebula as we see it. It produces a flood o ...
... The central area of the nebula is called the Trapezium cluster. It is dominated by four young, massive stars in a kite-like arrangement. The brightest of these stars, which has a luminosity 100,000 times that of the Sun, provides the energy that creates the nebula as we see it. It produces a flood o ...
Parallax - The Universe Adventure
... the moon using the parallax shift viewed between two cities on Earth. The distance he calculated is surprisingly close to the accurate distance we can measure today! Later astronomers were able to estimate the distance to planets and nearby stars using parallax with the diameter of the Earth’s orbit ...
... the moon using the parallax shift viewed between two cities on Earth. The distance he calculated is surprisingly close to the accurate distance we can measure today! Later astronomers were able to estimate the distance to planets and nearby stars using parallax with the diameter of the Earth’s orbit ...
Introduction to Astronomy (high school)
... The Kuiper Belt – home for short-period comets?? Starting in 1992, astronomers have become aware of a vast population of small bodies orbiting the sun beyond Neptune. There are at least 70,000 "trans-Neptunians" with diameters larger than 100 km in the radial zone extending outwards from the orbit ...
... The Kuiper Belt – home for short-period comets?? Starting in 1992, astronomers have become aware of a vast population of small bodies orbiting the sun beyond Neptune. There are at least 70,000 "trans-Neptunians" with diameters larger than 100 km in the radial zone extending outwards from the orbit ...
Astronomical Beliefs - Communicating Astronomy With The Public
... Ancient belief: a witch/wizard flying. ...
... Ancient belief: a witch/wizard flying. ...
Beyond Our Solar System
... In this figure, your field of view widens by a factor of 100, and you can see an area 1 mile in diameter. – The arrow points to the scene shown in the preceding photo. – People, trees, and sidewalks have vanished, but now you can see a college campus and the surrounding streets and houses. – The di ...
... In this figure, your field of view widens by a factor of 100, and you can see an area 1 mile in diameter. – The arrow points to the scene shown in the preceding photo. – People, trees, and sidewalks have vanished, but now you can see a college campus and the surrounding streets and houses. – The di ...
The Family of Stars
... With ground-based telescopes, we can measure parallaxes p ≥ 0.02 arc sec => d ≤ 50 pc ...
... With ground-based telescopes, we can measure parallaxes p ≥ 0.02 arc sec => d ≤ 50 pc ...
4 Viable Transfer of Microorganisms in the Solar System and
... Francis A. Cucinotta and Brett Gladman It is now generally accepted that at the beginning of our solar system a considerable amount of organic molecules and water were imported to the early Earth as well as to the other terrestrial planets via asteroids and comets [1-3]. The period of heavy bombardm ...
... Francis A. Cucinotta and Brett Gladman It is now generally accepted that at the beginning of our solar system a considerable amount of organic molecules and water were imported to the early Earth as well as to the other terrestrial planets via asteroids and comets [1-3]. The period of heavy bombardm ...
Delineating the Evolution of Organic Molecular Synthesis
... processes leading to the formation of protosolar nebulae [4-6]. The gravitational collapse of an interstellar cloud has the potential to create a protosolar nebula with the eventual formation of protoplanetary disks [7]. This is the process by which the Solar System was formed. The accretion of thes ...
... processes leading to the formation of protosolar nebulae [4-6]. The gravitational collapse of an interstellar cloud has the potential to create a protosolar nebula with the eventual formation of protoplanetary disks [7]. This is the process by which the Solar System was formed. The accretion of thes ...
Lecture26_Future
... Kepler team has estimated that there are "at least 50 billion planets in the Milky Way", of which "at least 500 million" are in the habitable zone. ...
... Kepler team has estimated that there are "at least 50 billion planets in the Milky Way", of which "at least 500 million" are in the habitable zone. ...
Introduction to the sky
... and planets in the sky, we need a coordinate system. The system we are most familiar with is the horizon system. “Straight up” is called the zenith. The opposite point on the sky, which would be below your feet, is the nadir. These are the two poles of the horizon system. The horizon traces out a ci ...
... and planets in the sky, we need a coordinate system. The system we are most familiar with is the horizon system. “Straight up” is called the zenith. The opposite point on the sky, which would be below your feet, is the nadir. These are the two poles of the horizon system. The horizon traces out a ci ...
February 2013 - astronomy for beginners
... The constellations of Cygnus and Lyra The double double has the official identification ε (epsilon) Lyrae and is the 5th star in Lyra. In the chart above it can be found just north (above) the brightest star α (Vega). The two pairs of the double double are labelled as ε1 and ε2 and are separated by ...
... The constellations of Cygnus and Lyra The double double has the official identification ε (epsilon) Lyrae and is the 5th star in Lyra. In the chart above it can be found just north (above) the brightest star α (Vega). The two pairs of the double double are labelled as ε1 and ε2 and are separated by ...
Introduction to the sky
... and planets in the sky, we need a coordinate system. The system we are most familiar with is the horizon system. “Straight up” is called the zenith. The opposite point on the sky, which would be below your feet, is the nadir. These are the two poles of the horizon system. The horizon traces out a ci ...
... and planets in the sky, we need a coordinate system. The system we are most familiar with is the horizon system. “Straight up” is called the zenith. The opposite point on the sky, which would be below your feet, is the nadir. These are the two poles of the horizon system. The horizon traces out a ci ...
Science Across Disciplines
... The logic of the Darwin science program follows directly: we must search for habitable planets – those where liquid water can exist – and investigate their atmospheres for biosignatures, the gas products specific to the carbon macromolecule chemistry we call life. ...
... The logic of the Darwin science program follows directly: we must search for habitable planets – those where liquid water can exist – and investigate their atmospheres for biosignatures, the gas products specific to the carbon macromolecule chemistry we call life. ...
2012 Alston Publishing House Pte Ltd Science SMART Teacher`s
... Questions are raised to generate pupils’ curiosity ...
... Questions are raised to generate pupils’ curiosity ...
HR Diagram of One Solar Mass Evolution
... as bright as a whole galaxy of stars • We can find their distance • Even when they are on the other side of the universe ...
... as bright as a whole galaxy of stars • We can find their distance • Even when they are on the other side of the universe ...
McDonald Observatory Planet Search - tls
... • Long period variations are most likely due to giant planets around stars with Mstar > 1 Mסּ • Short period variations are due to radial pulsations in the fundamental and overtone modes • Pulsations can be used to get funamental parameters of ...
... • Long period variations are most likely due to giant planets around stars with Mstar > 1 Mסּ • Short period variations are due to radial pulsations in the fundamental and overtone modes • Pulsations can be used to get funamental parameters of ...
History of Astronomy
... How Copernicus calculated the distance to the planets. (A) When an inner planet appears in the sky at its farthest point from the Sun, the planet's angle on the sky away from the Sun, A, can be measured. You can see from the figure that at the same time angle B is 90°. The planet's distance from th ...
... How Copernicus calculated the distance to the planets. (A) When an inner planet appears in the sky at its farthest point from the Sun, the planet's angle on the sky away from the Sun, A, can be measured. You can see from the figure that at the same time angle B is 90°. The planet's distance from th ...
Catching Planets in Formation with GMT
... • Substantial mismatch between predicted and observed distribution of exoplanets. • Major uncertainties: • How do gas-giant planets form. • How much do planets migrate. • Are there many habitable (water, etc) planets. ...
... • Substantial mismatch between predicted and observed distribution of exoplanets. • Major uncertainties: • How do gas-giant planets form. • How much do planets migrate. • Are there many habitable (water, etc) planets. ...
Chapter 5 Gravitational fields - crypt
... The gravitational field strength on the surface of the Earth is 9.81 N kg–1. A satellite in a geostationary orbit round the Earth experiences a gravitational field strength of 0.225 N kg–1. Determine the orbital radius r of the satellite from the centre of the Earth in terms of the radius of the Ear ...
... The gravitational field strength on the surface of the Earth is 9.81 N kg–1. A satellite in a geostationary orbit round the Earth experiences a gravitational field strength of 0.225 N kg–1. Determine the orbital radius r of the satellite from the centre of the Earth in terms of the radius of the Ear ...
What causes the moon to change in appearance
... caused by erosion when water flows downhill, so we can make an inference—a conclusion based on evidence and reasoning--that there was a lot of water on the planet long ago. There are areas in the southern hemisphere of Mars where this is the case. Our robotic spacecraft have confirmed what visual ev ...
... caused by erosion when water flows downhill, so we can make an inference—a conclusion based on evidence and reasoning--that there was a lot of water on the planet long ago. There are areas in the southern hemisphere of Mars where this is the case. Our robotic spacecraft have confirmed what visual ev ...
GCSE P1 1.5.4 Red shift
... after exploding suddenly in a Big Bang from a very small initial point, some 13.5 billion years ago. ...
... after exploding suddenly in a Big Bang from a very small initial point, some 13.5 billion years ago. ...
Solar System - New Haven Science
... away from the sun in all directions. Light from the Sun illuminates objects that reflect light, including Earth and its moon. The side of the earth that is facing the sun experiences daylight; the side of the Earth facing away from the sun experiences night. All parts of the earth experience a cycle ...
... away from the sun in all directions. Light from the Sun illuminates objects that reflect light, including Earth and its moon. The side of the earth that is facing the sun experiences daylight; the side of the Earth facing away from the sun experiences night. All parts of the earth experience a cycle ...
Chapter 1 - Pearson Education
... used more generally to refer to any object orbiting another object. asteroid A relatively small and rocky object that orbits a star. Asteroids are sometimes called minor planets because they orbit much like planets but are smaller than anything we consider to be a true planet. comet A relatively sma ...
... used more generally to refer to any object orbiting another object. asteroid A relatively small and rocky object that orbits a star. Asteroids are sometimes called minor planets because they orbit much like planets but are smaller than anything we consider to be a true planet. comet A relatively sma ...
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.