Our Universe
... • This is not a normal surface that you could see or touch. At the event horizon, the pull of gravity becomes infinitely strong. Thus, an object can exist there for only an instant as it plunges inward at the speed of light. ...
... • This is not a normal surface that you could see or touch. At the event horizon, the pull of gravity becomes infinitely strong. Thus, an object can exist there for only an instant as it plunges inward at the speed of light. ...
DQ_IN_08_25_2006
... The other was the announcement earlier in the week that scientists have found direct evidence for dark matter. But they say they are still not sure what this mysterious matter is or where it comes from. Scientists have theorized about dark matter for about seventy years. The idea is that the matter ...
... The other was the announcement earlier in the week that scientists have found direct evidence for dark matter. But they say they are still not sure what this mysterious matter is or where it comes from. Scientists have theorized about dark matter for about seventy years. The idea is that the matter ...
SPECTRAL WORKSHOP
... enough to observe planets orbiting distant stars. When the planet moves in front of the star, it hides some of the star's light – this can be observed with a back-garden telescope as a periodic decrease in the light from the star. ...
... enough to observe planets orbiting distant stars. When the planet moves in front of the star, it hides some of the star's light – this can be observed with a back-garden telescope as a periodic decrease in the light from the star. ...
10.1 The Solar Neighborhood Barnard`s Star
... largest proper motion of any – proper motion is the actual shift of the star in the sky, after correcting for parallax. The pictures (a) were taken 22 years apart. (b) shows the actual motion of the Alpha ...
... largest proper motion of any – proper motion is the actual shift of the star in the sky, after correcting for parallax. The pictures (a) were taken 22 years apart. (b) shows the actual motion of the Alpha ...
Protostar formation
... A star mass determines which fusion reaction are possible in the core, and hence its luminosity, surface temperature and lifetime. Object with mass smaller than 8% of the solar mass (75 times Jupiter mass) never ignite fusion, and therefore fade to obscurity in about 100 million years. These are Bro ...
... A star mass determines which fusion reaction are possible in the core, and hence its luminosity, surface temperature and lifetime. Object with mass smaller than 8% of the solar mass (75 times Jupiter mass) never ignite fusion, and therefore fade to obscurity in about 100 million years. These are Bro ...
AST121 Introduction to Astronomy
... A comparison of two EIT images almost two years apart illustrates how the level of solar activity has increased significantly. The Sun attains its expected sunspot maximum in the year 2000. These images are captured using Fe IX-X 171 Å emission showing the solar corona at a temperature of about 1.3 ...
... A comparison of two EIT images almost two years apart illustrates how the level of solar activity has increased significantly. The Sun attains its expected sunspot maximum in the year 2000. These images are captured using Fe IX-X 171 Å emission showing the solar corona at a temperature of about 1.3 ...
Parallax - High Point University
... A comparison of two EIT images almost two years apart illustrates how the level of solar activity has increased significantly. The Sun attains its expected sunspot maximum in the year 2000. These images are captured using Fe IX-X 171 Å emission showing the solar corona at a temperature of about 1.3 ...
... A comparison of two EIT images almost two years apart illustrates how the level of solar activity has increased significantly. The Sun attains its expected sunspot maximum in the year 2000. These images are captured using Fe IX-X 171 Å emission showing the solar corona at a temperature of about 1.3 ...
Astronomy Day 2006: A short presentation on eclipsing binary stars
... Just what are they? Why do we care? It is recognized as fact by astronomers that well over half of the stars in the universe belong to multiple systems. You might think of our Sun as being an exceptional system that involves only one star and you would be right. ...
... Just what are they? Why do we care? It is recognized as fact by astronomers that well over half of the stars in the universe belong to multiple systems. You might think of our Sun as being an exceptional system that involves only one star and you would be right. ...
The Life Cycle of a Star
... then collapse in less than a second, causing a massive explosion called a supernova. In a supernova, a massive shockwave is produced that blows away the outer layers of the star. Supernova shine brighter then whole galaxies for a few years. ...
... then collapse in less than a second, causing a massive explosion called a supernova. In a supernova, a massive shockwave is produced that blows away the outer layers of the star. Supernova shine brighter then whole galaxies for a few years. ...
Chapter10- Other Planetary Systems -pptx
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. • Resonances may also contribute. ...
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. • Resonances may also contribute. ...
Stellar Evolution
... Mass governs a star’s temperature, luminosity, and diameter. In fact, astronomers have discovered that the mass and the composition (makeup) of a star determine nearly all its other properties. ...
... Mass governs a star’s temperature, luminosity, and diameter. In fact, astronomers have discovered that the mass and the composition (makeup) of a star determine nearly all its other properties. ...
Stars I - Astronomy Centre
... of proto-planetary disks around protostars and so we expect other planetary systems like the Solar System to be quite common • Planets around other stars (extra-solar planets) are extremely hard to see due to glare from the host star • However, since stars and massive planets are in orbit about each ...
... of proto-planetary disks around protostars and so we expect other planetary systems like the Solar System to be quite common • Planets around other stars (extra-solar planets) are extremely hard to see due to glare from the host star • However, since stars and massive planets are in orbit about each ...
© The Multi Taskin Mom | http://www.themultitaskinmom.com
... This set is perfect for practice in the car or anywhere you would like to keep your little ones occupied. Cover page >>> ...
... This set is perfect for practice in the car or anywhere you would like to keep your little ones occupied. Cover page >>> ...
Renaissance Astronomy - Faculty Web Sites at the University of
... Planets move faster when they are closer to the Sun in such a way that a line between the planet and the Sun sweeps out an equal area in the same time interval. The Law of Equal Areas ...
... Planets move faster when they are closer to the Sun in such a way that a line between the planet and the Sun sweeps out an equal area in the same time interval. The Law of Equal Areas ...
The Search for Another Earth
... be floating freely while some planets are discovered around binary stars. ...
... be floating freely while some planets are discovered around binary stars. ...
Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman
... TRAPPIST-1b (40±21% in [-95 ; -55] km s−1 ) and after the transit of TRAPPIST-1c (41±18% in [-135 ; -40] km s−1 ). Since the star has a variable corona (Wheatley et al. 2017), this might be an indication of a similarly variable chromosphere. Alternatively, and given that the Ly-α line is stable over ...
... TRAPPIST-1b (40±21% in [-95 ; -55] km s−1 ) and after the transit of TRAPPIST-1c (41±18% in [-135 ; -40] km s−1 ). Since the star has a variable corona (Wheatley et al. 2017), this might be an indication of a similarly variable chromosphere. Alternatively, and given that the Ly-α line is stable over ...
Astronomy that falls from the sky
... rocks never formed into a planet and are orbiting in a transitional area between the inner rocky planets and the outer gas giants. Most, but not all, meteorites are pieces of asteroids (some meteorites are pieces of our Moon, the planet Mars, possibly Mercury, and also comet nuclei). 5. Beyond the A ...
... rocks never formed into a planet and are orbiting in a transitional area between the inner rocky planets and the outer gas giants. Most, but not all, meteorites are pieces of asteroids (some meteorites are pieces of our Moon, the planet Mars, possibly Mercury, and also comet nuclei). 5. Beyond the A ...
Stellar Evolution - Hays High School
... Star has settled into the most stable part of its life Converts hydrogen to helium (H => He) Next step depends on the mass of the star Three different examples of stars: 1. Stars similar to our Sun 2. Stars several times more massive than the Sun 3. HUGE HUMONGOUS stars, VERY massive ...
... Star has settled into the most stable part of its life Converts hydrogen to helium (H => He) Next step depends on the mass of the star Three different examples of stars: 1. Stars similar to our Sun 2. Stars several times more massive than the Sun 3. HUGE HUMONGOUS stars, VERY massive ...
Word Doc - CAASTRO
... ○ Click the NEXT button to watch the animations and information about Mars today and in the past and learn about how and why its atmosphere changed over time. ○ Suggested questions: ■ What colour does Mars appear to be? ■ What are the ice caps at the poles of Mars made out of? ■ How do we know there ...
... ○ Click the NEXT button to watch the animations and information about Mars today and in the past and learn about how and why its atmosphere changed over time. ○ Suggested questions: ■ What colour does Mars appear to be? ■ What are the ice caps at the poles of Mars made out of? ■ How do we know there ...
the moons of jovian planets.
... Question 8 The asteroid belt is evidence of a) a planet that once orbited the Sun but later was destroyed. b) ancient material from the formation of the solar system. c) a collision between Jupiter and one of its larger moons. d) comets that were trapped by Jupiter’s gravitational field. Explanatio ...
... Question 8 The asteroid belt is evidence of a) a planet that once orbited the Sun but later was destroyed. b) ancient material from the formation of the solar system. c) a collision between Jupiter and one of its larger moons. d) comets that were trapped by Jupiter’s gravitational field. Explanatio ...
Piscataway High School - Piscataway Township Schools
... Describe energy balance and pressure balance in a main sequence star Compare and Contrast what happens in the advanced stages of life of large, average and small stars ...
... Describe energy balance and pressure balance in a main sequence star Compare and Contrast what happens in the advanced stages of life of large, average and small stars ...
Hurray! Holidays are here again. Name: Class: II / Sec _____
... Size: About half as big as Earth. Number of moons: 2 Temperature: –266°F to –62°F. So Mars is a pretty cold place! Mars is mainly made of rocks. Mars is the fourth planet from the Sun. Mars is covered with red rocks. There are huge volcanoes and lots of craters on the surface. So far, scientists hav ...
... Size: About half as big as Earth. Number of moons: 2 Temperature: –266°F to –62°F. So Mars is a pretty cold place! Mars is mainly made of rocks. Mars is the fourth planet from the Sun. Mars is covered with red rocks. There are huge volcanoes and lots of craters on the surface. So far, scientists hav ...
TESSMANN PLANETARIUM GUIDE TO THE SOLAR SYSTEM
... make one orbit around the Milky Way. It is known as a yellow dwarf, although its color is actually more white than yellow. It generates energy through nuclear fusion in its core. The Sun is located in the Orion arm of the Milky Way. Sunspots are areas of strong magnetic activity and lower temperatur ...
... make one orbit around the Milky Way. It is known as a yellow dwarf, although its color is actually more white than yellow. It generates energy through nuclear fusion in its core. The Sun is located in the Orion arm of the Milky Way. Sunspots are areas of strong magnetic activity and lower temperatur ...
of the star. - Colyton High School
... 3. Fusion stops, temperature drops and gas pressure decreases, no longer in equilibrium. 4. Core contracts (gravity WINS by pulling atoms in). 5. Increased temperature (more atoms, more collisions) and gas pressure in the core reinitiates nuclear fusion, equilibrium is achieved, and the cycle begins ...
... 3. Fusion stops, temperature drops and gas pressure decreases, no longer in equilibrium. 4. Core contracts (gravity WINS by pulling atoms in). 5. Increased temperature (more atoms, more collisions) and gas pressure in the core reinitiates nuclear fusion, equilibrium is achieved, and the cycle begins ...
Star- large ball of gas held together by large ball of gas held
... Stars originate from clouds of gas and dust molecules that clump up due to gravity. When the clump reaches the size of Jupiter, it creates enough energy by nuclear fusion to shine – becoming a star. For stars that are about the size of our sun, after main sequence they become giants, white dwarfs, a ...
... Stars originate from clouds of gas and dust molecules that clump up due to gravity. When the clump reaches the size of Jupiter, it creates enough energy by nuclear fusion to shine – becoming a star. For stars that are about the size of our sun, after main sequence they become giants, white dwarfs, a ...
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.