Night Sky
... but also how much of the most dangerous aspects of the universe are also necessary for life. but before we get to the killer and nurturing aspects of the sky, the extreme and unusual events -- that’s the rest of the course, we need to have a basic understanding of the everyday and every night sky--t ...
... but also how much of the most dangerous aspects of the universe are also necessary for life. but before we get to the killer and nurturing aspects of the sky, the extreme and unusual events -- that’s the rest of the course, we need to have a basic understanding of the everyday and every night sky--t ...
REGIONAL exam 2013
... 5. Each question is worth one point. Tiebreaker questions are indicated with a (T#) in which the number indicates the order of consultation in the event of a tie. Tiebreaker questions count toward the overall raw score, and are only used as tiebreakers when there is a tie. In such cases, (T1) will b ...
... 5. Each question is worth one point. Tiebreaker questions are indicated with a (T#) in which the number indicates the order of consultation in the event of a tie. Tiebreaker questions count toward the overall raw score, and are only used as tiebreakers when there is a tie. In such cases, (T1) will b ...
Big Bear Valley Astronomical Society
... connected to Sirius as the constellation itself did not take on its current form until Roman times. Sirius is a hot white star that will shine brightly for a long time to come. It is also a known binary system, with a tiny white dwarf star, coloquially known as 'the Pup', circling the brighter prima ...
... connected to Sirius as the constellation itself did not take on its current form until Roman times. Sirius is a hot white star that will shine brightly for a long time to come. It is also a known binary system, with a tiny white dwarf star, coloquially known as 'the Pup', circling the brighter prima ...
Early Astronomers: Ptolemy, Aristotle, Copernicus, and Galileo
... and stars must be circular since they were perfect and if the motions were circular, then they could go on forever. Today, we know that none of this is the case, but Aristotle was so respected that these wrong answers were taught for a very long time. Aristotle, outside of astronomy, was a champion ...
... and stars must be circular since they were perfect and if the motions were circular, then they could go on forever. Today, we know that none of this is the case, but Aristotle was so respected that these wrong answers were taught for a very long time. Aristotle, outside of astronomy, was a champion ...
NASAexplores 9-12 Lesson: Classified Stars - Science
... you while gazing into the night sky. The absolute magnitude and luminosity are used for that. They give you the relative brightness based on all of the stars being the same distance away from the earth. On this diagram, you do not see all of the individual stars. Since there are so many stars, only ...
... you while gazing into the night sky. The absolute magnitude and luminosity are used for that. They give you the relative brightness based on all of the stars being the same distance away from the earth. On this diagram, you do not see all of the individual stars. Since there are so many stars, only ...
OORT CLOUD EXPLORER - DYNAMIC OCCULTATION
... In-situ observational measurements of the structure of the Oort cloud is exceedingly difficult, owing to the D−4 flux dependence. At this time there is very little, perhaps zero, direct observational measurement of this structure. The object 90377 (Senda) is a candidate for membership, but with a se ...
... In-situ observational measurements of the structure of the Oort cloud is exceedingly difficult, owing to the D−4 flux dependence. At this time there is very little, perhaps zero, direct observational measurement of this structure. The object 90377 (Senda) is a candidate for membership, but with a se ...
Today`s Powerpoint
... Mass of end products is less than mass of 4 protons by 0.7%. Mass converted to energy. 600 millions of tons per second fused. Takes billions of years to convert p's to 4He in Sun's core. Process sets lifetime of stars. Hydrostatic Equilibrium: pressure from fusion reactions balances gravity. Sun is ...
... Mass of end products is less than mass of 4 protons by 0.7%. Mass converted to energy. 600 millions of tons per second fused. Takes billions of years to convert p's to 4He in Sun's core. Process sets lifetime of stars. Hydrostatic Equilibrium: pressure from fusion reactions balances gravity. Sun is ...
New findings show magnetic organization of the Sun
... eruptions ever seen in space. The radiant star has enough raw power to blow off two expanding shells of gas equal to the mass of several of our suns. The largest shell is so big—four light years across—that it would stretch nearly all the way from our Sun to the next nearest star, Alpha Centauri. Th ...
... eruptions ever seen in space. The radiant star has enough raw power to blow off two expanding shells of gas equal to the mass of several of our suns. The largest shell is so big—four light years across—that it would stretch nearly all the way from our Sun to the next nearest star, Alpha Centauri. Th ...
Anatomy of the Sun - Lincoln-Sudbury Regional High School
... However the gas behaves differently at different depths. It is convenient for astronomers to consider the Sun as made up of six regions: • the core, about 25% of the Sun’s radius, about 10 000 000 K • the radiative zone, out to about 70% of the Sun’s radius, about 8 000 000 K • the convection zone, ...
... However the gas behaves differently at different depths. It is convenient for astronomers to consider the Sun as made up of six regions: • the core, about 25% of the Sun’s radius, about 10 000 000 K • the radiative zone, out to about 70% of the Sun’s radius, about 8 000 000 K • the convection zone, ...
Anatomy of the Sun
... However the gas behaves differently at different depths. It is convenient for astronomers to consider the Sun as made up of six regions: • the core, about 25% of the Sun’s radius, about 10 000 000 K • the radiative zone, out to about 70% of the Sun’s radius, about 8 000 000 K • the convection zone, ...
... However the gas behaves differently at different depths. It is convenient for astronomers to consider the Sun as made up of six regions: • the core, about 25% of the Sun’s radius, about 10 000 000 K • the radiative zone, out to about 70% of the Sun’s radius, about 8 000 000 K • the convection zone, ...
Power Punt on Binary Asteroids
... • Binaries are of extreme importance as the separation and speeds of objects are related to their mass – how heavy they are • Mass is one of the most fundamental and important numbers for any object ...
... • Binaries are of extreme importance as the separation and speeds of objects are related to their mass – how heavy they are • Mass is one of the most fundamental and important numbers for any object ...
User Manual Explore Scientific Truss Tube Dobsonian Telescopes
... The planets During their orbit around the sun the planets are continuously changing their position on the sky. You can find the actual position of the planets in astronomy circulars and soon on the information center of the Explore Scientific homepage. The following planets are especially suited for ...
... The planets During their orbit around the sun the planets are continuously changing their position on the sky. You can find the actual position of the planets in astronomy circulars and soon on the information center of the Explore Scientific homepage. The following planets are especially suited for ...
English Summary
... Figure 3–. The spherical nebula (left) M 57 also called the Ring Nebula compared to the bipolar nebula Mz 3 (right). The causes of this differences in shape among Planetary Nebulae is still a matter of debate among astronomers. Photo credits: M 57 → Hubble Heritage Team (AURA/STScI/NASA). Mz 3 → NAS ...
... Figure 3–. The spherical nebula (left) M 57 also called the Ring Nebula compared to the bipolar nebula Mz 3 (right). The causes of this differences in shape among Planetary Nebulae is still a matter of debate among astronomers. Photo credits: M 57 → Hubble Heritage Team (AURA/STScI/NASA). Mz 3 → NAS ...
Interstellar medium, birth and life of stars
... RR Lyrae variables are low-mass, pulsating variables with short periods. Cepheid variables are high-mass, pulsating variables exhibiting a regular relationship between the period of pulsation and luminosity. Mass can be transferred from one star to another in close binary systems. When this occu ...
... RR Lyrae variables are low-mass, pulsating variables with short periods. Cepheid variables are high-mass, pulsating variables exhibiting a regular relationship between the period of pulsation and luminosity. Mass can be transferred from one star to another in close binary systems. When this occu ...
PDF, 95k
... locations. All the expeditions had different challenges, some of them were hazardous , and the results didn’t always live up to expectations! 4 Exoplanets and transits Since the discovery of the first extrasolar planet (1995) by Michel Mayor and Didier Queloz (Observatory of Geneva, Switzerland), mo ...
... locations. All the expeditions had different challenges, some of them were hazardous , and the results didn’t always live up to expectations! 4 Exoplanets and transits Since the discovery of the first extrasolar planet (1995) by Michel Mayor and Didier Queloz (Observatory of Geneva, Switzerland), mo ...
ASTRONOMY IN MODERN TURKEY Akdeniz University Space
... Fig. 1 shows the location of modern Turkish universities and astronomical observatories. The total number of modern day Turkish astronomers with PhD degrees including the retired ones is about 153. Astronomy Departments, by taking the advantage of the “International Year of Astronomy” in 2009 decide ...
... Fig. 1 shows the location of modern Turkish universities and astronomical observatories. The total number of modern day Turkish astronomers with PhD degrees including the retired ones is about 153. Astronomy Departments, by taking the advantage of the “International Year of Astronomy” in 2009 decide ...
The Search for Worlds Like Our Own
... would indicate similarities or differences relative to the atmospheres of Solar System planets such as Venus, Earth, and Mars. The same reasoning has been applied to NASA’s Terrestrial Planet Finder Interferometer (TPF-I). These two studies have been carried out in parallel for the last 10 years and ...
... would indicate similarities or differences relative to the atmospheres of Solar System planets such as Venus, Earth, and Mars. The same reasoning has been applied to NASA’s Terrestrial Planet Finder Interferometer (TPF-I). These two studies have been carried out in parallel for the last 10 years and ...
Lecture 34: Habitable Zones around Stars
... Stable, well-regulated climate Protection from harmful UV radiation ...
... Stable, well-regulated climate Protection from harmful UV radiation ...
Classifying the Spectra of Stars:
... presence of spectral features due to absorption. The amount of this energy deficit is proportional to the approximate triangular area of the line. Now we convert this triangular area to a rectangle with the height of actual continuum. The width of this rectangle is the equivalent width and is measur ...
... presence of spectral features due to absorption. The amount of this energy deficit is proportional to the approximate triangular area of the line. Now we convert this triangular area to a rectangle with the height of actual continuum. The width of this rectangle is the equivalent width and is measur ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.