November, 2015 - The Baton Rouge Astronomical Society
... One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does something that massive form so close to a parent star? Would there have been enough materi ...
... One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does something that massive form so close to a parent star? Would there have been enough materi ...
THE MOON - HMXEarthScience
... Scientists studying a Sun-like star named Ogle-Tr-3 discovered a planet that is, on the average, 3.5 million kilometers away from the star’s surface. The planet was discovered as a result of observing a cyclic decrease in the brightness of Ogle-Tr-3 every 28.5 hours. The changing brightness is the r ...
... Scientists studying a Sun-like star named Ogle-Tr-3 discovered a planet that is, on the average, 3.5 million kilometers away from the star’s surface. The planet was discovered as a result of observing a cyclic decrease in the brightness of Ogle-Tr-3 every 28.5 hours. The changing brightness is the r ...
Introduction
... have the same “gravitational charge”. The structure and evolution of stars is governed by a delicate balance between gravity, radiation, and nuclear processes. The structure of a galaxy, on the other hand, is basically determined by gravity – other forces only enter indirectly. The three key ingredi ...
... have the same “gravitational charge”. The structure and evolution of stars is governed by a delicate balance between gravity, radiation, and nuclear processes. The structure of a galaxy, on the other hand, is basically determined by gravity – other forces only enter indirectly. The three key ingredi ...
our planet the earth byalko - ArvindGuptaToys Books Gallery
... which are impossible to be reached even by spacecraft. For example, we shall visit the center of the Sun. However, the description of nature is not our major objective. There are, naturally, some descriptions in this book but they only serve to illustrate the explanations of phenomena. Our wish has ...
... which are impossible to be reached even by spacecraft. For example, we shall visit the center of the Sun. However, the description of nature is not our major objective. There are, naturally, some descriptions in this book but they only serve to illustrate the explanations of phenomena. Our wish has ...
Kepler Telescope Spots Smallest Exoplanet Yet The Night Sky
... Pointer stars, pointing left to Polaris — are now at exactly Polaris's height around 8 p.m. (depending on where you live in your time zone). ...
... Pointer stars, pointing left to Polaris — are now at exactly Polaris's height around 8 p.m. (depending on where you live in your time zone). ...
Galaxies
... Gravitational Lensing in Abell 2218 Cluster As predicted by Einstein’s General Theory of Relativity, a compact intervening object is bending and distorting light from individual members of this cluster so that we see a halo effect. ...
... Gravitational Lensing in Abell 2218 Cluster As predicted by Einstein’s General Theory of Relativity, a compact intervening object is bending and distorting light from individual members of this cluster so that we see a halo effect. ...
Astro 6590: Galaxies and the Universe Astro
... Properties of galaxies and clusters of galaxies which must be explained. 1. Galaxies are easily discernible as discrete entities, whereas groups and clusters are not. • Characteristic sizes? • Topologies? • Origin? • On what scale does the cosmological principle hold? If we select a star at random ...
... Properties of galaxies and clusters of galaxies which must be explained. 1. Galaxies are easily discernible as discrete entities, whereas groups and clusters are not. • Characteristic sizes? • Topologies? • Origin? • On what scale does the cosmological principle hold? If we select a star at random ...
When Stars Attack! In Search of Killer Supernovae
... Stars are vast nuclear reactors In hot core: fusion Light elements combine hydrogen ...
... Stars are vast nuclear reactors In hot core: fusion Light elements combine hydrogen ...
Spatial distribution of stars in the Milky Way
... •This may seem anomalous because they are later type than F •But the sample is dominated by giants, which can be observed to (on average) large distances in the disk Note that the faintest stars, M dwarfs, are restricted to the inner 20 pc or so, while progressively brighter stars are seen fill prog ...
... •This may seem anomalous because they are later type than F •But the sample is dominated by giants, which can be observed to (on average) large distances in the disk Note that the faintest stars, M dwarfs, are restricted to the inner 20 pc or so, while progressively brighter stars are seen fill prog ...
The Milky Way thin disk structure as revealed by stars and young
... to the third Galactic quadrant (180o l 270o ). In this sector of the Milky Way extinction is small (Moitinho 2001), and star clusters can be detected to very distant regions (Carraro et al. 2010), because the young disk is significantly warped (Moitinho et al 2006). A major break-through is repor ...
... to the third Galactic quadrant (180o l 270o ). In this sector of the Milky Way extinction is small (Moitinho 2001), and star clusters can be detected to very distant regions (Carraro et al. 2010), because the young disk is significantly warped (Moitinho et al 2006). A major break-through is repor ...
PPS
... Spectra of stars and galaxies are obtained by using prisms attached to telescopes to split the incoming light into its rainbow pattern - a technique which goes right back to Isaac Newton's discovery that light can be split into its component colours in this way. The spectrum can then be photographed ...
... Spectra of stars and galaxies are obtained by using prisms attached to telescopes to split the incoming light into its rainbow pattern - a technique which goes right back to Isaac Newton's discovery that light can be split into its component colours in this way. The spectrum can then be photographed ...
Competing Cosmologies
... Artist’s reconstruction of the Library of Alexandria Eratosthenes became the third librarian at Alexandria under Ptolemy III in the Hellenistic period following the conquests of Alexander the Great. Ptolemy I had been one of Alexander’s generals, and had taken Egypt as his own after Alexander’s unt ...
... Artist’s reconstruction of the Library of Alexandria Eratosthenes became the third librarian at Alexandria under Ptolemy III in the Hellenistic period following the conquests of Alexander the Great. Ptolemy I had been one of Alexander’s generals, and had taken Egypt as his own after Alexander’s unt ...
Physics 1114OL - Normandale Community College
... Recommended: Depending on where you purchased your textbook, there may be a copy of Starry Night packaged with Universe. (Used books may not have the software intact and the college bookstore is not responsible for missing software in used books.) Starry Night is an excellent program and I encourage ...
... Recommended: Depending on where you purchased your textbook, there may be a copy of Starry Night packaged with Universe. (Used books may not have the software intact and the college bookstore is not responsible for missing software in used books.) Starry Night is an excellent program and I encourage ...
The Next Great Exoplanet Hunt Please share
... probability for transits is equal to the stellar diameter divided by the orbital diameter, which is only 0.1% for an Earth-like orbit around a Sun-like star. For this reason, a meaningful transit survey must include tens of thousands of stars, or more. Because faint stars far outnumber bright ones i ...
... probability for transits is equal to the stellar diameter divided by the orbital diameter, which is only 0.1% for an Earth-like orbit around a Sun-like star. For this reason, a meaningful transit survey must include tens of thousands of stars, or more. Because faint stars far outnumber bright ones i ...
Space, Earth and Celestial Objects Test Prep
... Base your answers to the following three questions on the passage below and on your knowledge of Earth science. Asteroids Most known asteroids are found orbiting the Sun approximately halfway between the orbits of Mars and Jupiter, in a vast ring known as the Asteroid Belt. Occasionally, though, an ...
... Base your answers to the following three questions on the passage below and on your knowledge of Earth science. Asteroids Most known asteroids are found orbiting the Sun approximately halfway between the orbits of Mars and Jupiter, in a vast ring known as the Asteroid Belt. Occasionally, though, an ...
Staring Back to Cosmic Dawn - UC-HiPACC
... the 10-meter Keck 1 telescope, the team spectroscopically measured a redshift of 7.51, meaning we see the galaxy as it existed just 700 million years after the Big Bang. The galaxy, designated z8_GND_5296, appears red due to its extreme redshift. It’s forming stars at a rate about 100 times greater ...
... the 10-meter Keck 1 telescope, the team spectroscopically measured a redshift of 7.51, meaning we see the galaxy as it existed just 700 million years after the Big Bang. The galaxy, designated z8_GND_5296, appears red due to its extreme redshift. It’s forming stars at a rate about 100 times greater ...
Option D – Astrophysics
... The solar system The Sun and all the objects orbiting it are collectively known as the solar system. Our Sun is a star and it is very similar to billions of other stars in the universe. It has many objects orbiting around it that are held in their orbits by gravity. The solar system is an example of ...
... The solar system The Sun and all the objects orbiting it are collectively known as the solar system. Our Sun is a star and it is very similar to billions of other stars in the universe. It has many objects orbiting around it that are held in their orbits by gravity. The solar system is an example of ...
Extrasolar planets - Astronomisk Ungdom
... All work around extra solar planets is fairly new and current. At present time the transit method is moderate for detecting planets of smaller sizes which are normally difficult to identify due to the strongly ablaze host stars. Furthermore, this system does not only uncover planets around other sta ...
... All work around extra solar planets is fairly new and current. At present time the transit method is moderate for detecting planets of smaller sizes which are normally difficult to identify due to the strongly ablaze host stars. Furthermore, this system does not only uncover planets around other sta ...
Water ice lines and the formation of giant moons around super
... Most of the exoplanets with known masses at Earth-like distances to Sun-like stars are heavier than Jupiter, which raises the question of whether such planets are accompanied by detectable, possibly habitable moons. Here we simulate the accretion disks around super-Jovian planets and find that giant ...
... Most of the exoplanets with known masses at Earth-like distances to Sun-like stars are heavier than Jupiter, which raises the question of whether such planets are accompanied by detectable, possibly habitable moons. Here we simulate the accretion disks around super-Jovian planets and find that giant ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.