Supernovae: Heavy Elements
... spectral class and luminosity. Some stars can be distinguished from one spectral class to another with the naked eye. • Main Sequence stars generally run from lower right (low temperature and luminosity) to upper left (high temperature and luminosity) • Exceptions - Secondary band of very cool, yet ...
... spectral class and luminosity. Some stars can be distinguished from one spectral class to another with the naked eye. • Main Sequence stars generally run from lower right (low temperature and luminosity) to upper left (high temperature and luminosity) • Exceptions - Secondary band of very cool, yet ...
Astronomy Content from Frameworks
... The Moon changes in position in the sky each day. It also changes in appearance from a full Moon to a thin crescent. These changes are called phases. The Moon's light comes from the Sun, and the sunlight is reflected off the Moon's surface. The phase of the Moon that we see depends on the orientatio ...
... The Moon changes in position in the sky each day. It also changes in appearance from a full Moon to a thin crescent. These changes are called phases. The Moon's light comes from the Sun, and the sunlight is reflected off the Moon's surface. The phase of the Moon that we see depends on the orientatio ...
Vagabonds of the Universe
... • 30 different showers each year • Named for the constellation from which the meteors appear to radiate • > 1 per minute • Best viewed after midnight ...
... • 30 different showers each year • Named for the constellation from which the meteors appear to radiate • > 1 per minute • Best viewed after midnight ...
Earth Science Unit Test Review
... 1. Describe composition of Sun. What type of star is it? How long does it take light from Sun to reach us? 2. Identify the features of the Sun on a diagram. Why do sunspots appear dark? 3. Desc ...
... 1. Describe composition of Sun. What type of star is it? How long does it take light from Sun to reach us? 2. Identify the features of the Sun on a diagram. Why do sunspots appear dark? 3. Desc ...
Physics@Brock - Brock University
... 1. During May the constellation Cancer is visible near the Western Horizon. However in June the Cancer is no longer visible in the night sky. The reason for that is that (a) the Earth is spinning about North-South axis. (b) the Earth is revolving around the Sun. (c) the Earth has rotational axis tip ...
... 1. During May the constellation Cancer is visible near the Western Horizon. However in June the Cancer is no longer visible in the night sky. The reason for that is that (a) the Earth is spinning about North-South axis. (b) the Earth is revolving around the Sun. (c) the Earth has rotational axis tip ...
Topic 1 – Introduction to Earth`s Changing Environment
... - As height increases, potential energy ___________________. - As speed/velocity increases, kinetic energy _____________________. ...
... - As height increases, potential energy ___________________. - As speed/velocity increases, kinetic energy _____________________. ...
H-R diagram worksheet
... Mark each of the following on the H-R diagram and label it as indicated. You may use page 15 of your ESRT to help you. 6. Draw and label a long diagonal line showing the approximate location of the main sequence. 7. A large circle indicating the area where you find the biggest diameter stars, labele ...
... Mark each of the following on the H-R diagram and label it as indicated. You may use page 15 of your ESRT to help you. 6. Draw and label a long diagonal line showing the approximate location of the main sequence. 7. A large circle indicating the area where you find the biggest diameter stars, labele ...
How Telescopes Changed our Universe
... In our own solar system, telescopes found planets our eyes could not see. Are there other planets outside of our solar system? ...
... In our own solar system, telescopes found planets our eyes could not see. Are there other planets outside of our solar system? ...
Name
... 29) Why can the Hubble Telescope observe fainter galaxies than can be observed on Earth? A) the Hubble Telescope is closer to the galaxies B) the Hubble Telescope can observe gamma rays C) the Hubble Telescope is above the Earth’s atmosphere D) the Hubble Telescope can observe X-rays E) the Hubble T ...
... 29) Why can the Hubble Telescope observe fainter galaxies than can be observed on Earth? A) the Hubble Telescope is closer to the galaxies B) the Hubble Telescope can observe gamma rays C) the Hubble Telescope is above the Earth’s atmosphere D) the Hubble Telescope can observe X-rays E) the Hubble T ...
April 2016
... The darker orange-brown bands called belts are made of descending air that swirls in spot-like cyclones bordered by wild instabilities. Between them the lighter bands are called zones. At a higher elevation they’re whitened by cold icy crystals of ammonia. In 1995, Comet Shoemaker-Levy 9 crashed exp ...
... The darker orange-brown bands called belts are made of descending air that swirls in spot-like cyclones bordered by wild instabilities. Between them the lighter bands are called zones. At a higher elevation they’re whitened by cold icy crystals of ammonia. In 1995, Comet Shoemaker-Levy 9 crashed exp ...
Name
... D) are not electromagnetic waves like visible light is. E) have less energy per photon An infrared photon has a frequency of 1 x 1014 Hz. What is the energy of this ...
... D) are not electromagnetic waves like visible light is. E) have less energy per photon An infrared photon has a frequency of 1 x 1014 Hz. What is the energy of this ...
The formation of the Solar System
... • In the outer solar system, there was more mass in the planetesimals, since they were formed of hydrogen-bearing compounds. Apparently, they produced more massive planetesimals. They also had to incorporate the hydrogen and helium gas that makes up most of Jupiter and Saturn. See Figure ...
... • In the outer solar system, there was more mass in the planetesimals, since they were formed of hydrogen-bearing compounds. Apparently, they produced more massive planetesimals. They also had to incorporate the hydrogen and helium gas that makes up most of Jupiter and Saturn. See Figure ...
The Search for Worlds Like Our Own
... most likely requires a stable supply of energy, planets that could host life are likely to orbit within what is known as the habitable zone (HZ), a region relatively close to the parent star. The HZ is defined such that liquid water is likely present on a particular planet in that region, given that ...
... most likely requires a stable supply of energy, planets that could host life are likely to orbit within what is known as the habitable zone (HZ), a region relatively close to the parent star. The HZ is defined such that liquid water is likely present on a particular planet in that region, given that ...
Venus
... atmosphere is almost made up of only carbon dioxide. Earth and Venus are like basically the same size. It is 7,522 miles wide last the temperature can be more ...
... atmosphere is almost made up of only carbon dioxide. Earth and Venus are like basically the same size. It is 7,522 miles wide last the temperature can be more ...
Name
... D) are not electromagnetic waves like visible light is. E) have less energy per photon An infrared photon has a frequency of 1 x 1014 Hz. What is the energy of this ...
... D) are not electromagnetic waves like visible light is. E) have less energy per photon An infrared photon has a frequency of 1 x 1014 Hz. What is the energy of this ...
Name - MIT
... 6) A planet is 4 Astronomical Units from the Sun. What is the planet’s orbital period around the Sun? A) the square of 4, which equals 16 years B) the square root of 4, which equals 2 years C) the square root of 64, which equals 8 years D) the square of 9, which equals 81 years E) the cube of 4, whi ...
... 6) A planet is 4 Astronomical Units from the Sun. What is the planet’s orbital period around the Sun? A) the square of 4, which equals 16 years B) the square root of 4, which equals 2 years C) the square root of 64, which equals 8 years D) the square of 9, which equals 81 years E) the cube of 4, whi ...
Planets of Our, and Other, Solar Systems
... • Once the core grows past ~0.5-1 mile across, gravity becomes significant and accelerates the process. • Growth rate goes as radius to the 4th power (for constant density). • So, those cores which get to the self-gravity point first, quickly run away and dominate the growth, accreting the rest. • T ...
... • Once the core grows past ~0.5-1 mile across, gravity becomes significant and accelerates the process. • Growth rate goes as radius to the 4th power (for constant density). • So, those cores which get to the self-gravity point first, quickly run away and dominate the growth, accreting the rest. • T ...
THE SOLAR SYSTEM
... A: No, not at all! Our solar system is just a speck of the Milky Way galaxy, which itself is only a tiny part of the universe. If each person on Earth had 60 galaxies (each containing 100–200 billion stars), the total would roughly represent the number of galaxies estimated to exist in the universe. ...
... A: No, not at all! Our solar system is just a speck of the Milky Way galaxy, which itself is only a tiny part of the universe. If each person on Earth had 60 galaxies (each containing 100–200 billion stars), the total would roughly represent the number of galaxies estimated to exist in the universe. ...
Evidence #1: Earth`s average density is higher than the Moon`s. The
... Seismometers left on the Moon by Apollo astronauts suggest that the Moon has three main layers: a core, the lithosphere, and the crust. We don’t know the density of each of these layers, but the average density of the Moon is 3.3 g/cm3. The average density of the moon is close to the density of Eart ...
... Seismometers left on the Moon by Apollo astronauts suggest that the Moon has three main layers: a core, the lithosphere, and the crust. We don’t know the density of each of these layers, but the average density of the Moon is 3.3 g/cm3. The average density of the moon is close to the density of Eart ...
SGES 1302 INTRODUCTION TO EARTH SYSTEM
... The main disk of the Milky Way Galaxy is about 80,000 to 100,000 lightyears in diameter, and outside the Galactic center, about 1,000 light-years in thickness. (1 light years = 9.5x1012 km) ...
... The main disk of the Milky Way Galaxy is about 80,000 to 100,000 lightyears in diameter, and outside the Galactic center, about 1,000 light-years in thickness. (1 light years = 9.5x1012 km) ...
The Copernican revolution
... and any group of stars ect. Describe your observations. You can observe that there are several small and unusually bright starlike that do not keep pace with stars. These objects are called planets. The moon and the sun also move at a different pace from the stars. From such observations, most peopl ...
... and any group of stars ect. Describe your observations. You can observe that there are several small and unusually bright starlike that do not keep pace with stars. These objects are called planets. The moon and the sun also move at a different pace from the stars. From such observations, most peopl ...
Life Cycle of Stars
... Sheetthat not even – An object so massive and dense light can escape its gravity – The end result from a supernova of a star that has a mass greater than 3x the sun ...
... Sheetthat not even – An object so massive and dense light can escape its gravity – The end result from a supernova of a star that has a mass greater than 3x the sun ...
tremaine_stanford
... • Galactic tidal forces (fractional effect < 10-13) Unknown small corrections include: • asteroids (< 10-9) and Kuiper belt (< 10-6 even for outermost planets) •mass loss from Sun through radiation and solar wind, and drag of solar wind on planetary magnetospheres (< 10-14) 1 AU = 1 astronomical uni ...
... • Galactic tidal forces (fractional effect < 10-13) Unknown small corrections include: • asteroids (< 10-9) and Kuiper belt (< 10-6 even for outermost planets) •mass loss from Sun through radiation and solar wind, and drag of solar wind on planetary magnetospheres (< 10-14) 1 AU = 1 astronomical uni ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently. On 4 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. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.