A new method to determine the mean density of massive Solar
... More than 10 natural satellites at a distance from their primaries, ranged from 3 to 100 relative astronomical units, have the downward trend in the mean density as the semimajor axis of the orbit grows (Fig. 2). Pluto’s moon Charon, shown here as a terrestrial planet satellite, above 10,000 rAU apa ...
... More than 10 natural satellites at a distance from their primaries, ranged from 3 to 100 relative astronomical units, have the downward trend in the mean density as the semimajor axis of the orbit grows (Fig. 2). Pluto’s moon Charon, shown here as a terrestrial planet satellite, above 10,000 rAU apa ...
telestar instruction manual
... interesting. But look again. There is much information that is revealed in stars. The first thing you will notice is that not all stars are the same colors. See if you can find blue, orange, yellow, white and red stars. The color of stars sometimes can tell you about the age of a star and the temper ...
... interesting. But look again. There is much information that is revealed in stars. The first thing you will notice is that not all stars are the same colors. See if you can find blue, orange, yellow, white and red stars. The color of stars sometimes can tell you about the age of a star and the temper ...
Astronomical Picture of the Day
... emerging from pillars of molecular hydrogen gas and dust. The giant pillars are light years in length and are so dense that interior gas contracts gravitationally to form stars. At each pillars' end, the intense radiation of bright young stars causes low density material to boil away, leaving stella ...
... emerging from pillars of molecular hydrogen gas and dust. The giant pillars are light years in length and are so dense that interior gas contracts gravitationally to form stars. At each pillars' end, the intense radiation of bright young stars causes low density material to boil away, leaving stella ...
Astronomy and Astrophysics (ASTRO)
... planetary systems: dynamics, thermodynamics, internal and surface structure of planets and minor bodies, physics of their atmosphere. Discovery techniques and characterization of extrasolar planets, and planetary systems formation models. "Grand tour" of the Solar System, using data and imagery from ...
... planetary systems: dynamics, thermodynamics, internal and surface structure of planets and minor bodies, physics of their atmosphere. Discovery techniques and characterization of extrasolar planets, and planetary systems formation models. "Grand tour" of the Solar System, using data and imagery from ...
PDF Manual
... The example programs provided with source code in User-RPL are freeware. You might give them away, but most of them are only usable with the libraries. QVSOP and its source are included in the package. It is officially distributed under the GNU license, so you may use it for own projects or distribu ...
... The example programs provided with source code in User-RPL are freeware. You might give them away, but most of them are only usable with the libraries. QVSOP and its source are included in the package. It is officially distributed under the GNU license, so you may use it for own projects or distribu ...
Alpha Centauri
... Alpha Centauri Was often called Rigel Kentaurus. Rigel Kentaurus means “foot of the centaur” in Arabic. ...
... Alpha Centauri Was often called Rigel Kentaurus. Rigel Kentaurus means “foot of the centaur” in Arabic. ...
Planet X, Comets and Earth Changes
... for as long as he has had to do in facing the odds pitted against him over the past decades, and to emerge in tact with as full a commitment as when he started that long ago. His personal philosophy states that he will not accept government funding on the principle that it has corrupted the scientif ...
... for as long as he has had to do in facing the odds pitted against him over the past decades, and to emerge in tact with as full a commitment as when he started that long ago. His personal philosophy states that he will not accept government funding on the principle that it has corrupted the scientif ...
Sample pages 1 PDF
... stems in part from its contrast with the dark night sky and in part from the sensitivity of the human eye once it adapts to darkness. The ghostly daytime Moon, faintly visible in the bright blue sky, gives a true picture of our satellite’s brightness. Yes, that’s right, the Moon doesn’t only come ou ...
... stems in part from its contrast with the dark night sky and in part from the sensitivity of the human eye once it adapts to darkness. The ghostly daytime Moon, faintly visible in the bright blue sky, gives a true picture of our satellite’s brightness. Yes, that’s right, the Moon doesn’t only come ou ...
Hot DQ White Dwarfs: Something Different
... (1995) and Voss et al. (2007) analyses of large samples of DB white dwarfs show that the DB mass distribution lacks the high mass component that is observed for DA white dwarfs. The scenario above was thus proposed as a natural explanation to the fact that the DB mass distribution morphology is fund ...
... (1995) and Voss et al. (2007) analyses of large samples of DB white dwarfs show that the DB mass distribution lacks the high mass component that is observed for DA white dwarfs. The scenario above was thus proposed as a natural explanation to the fact that the DB mass distribution morphology is fund ...
Small Bodies in the Outer Solar System
... the range r to r + dr. For the KBOs q ∼ 4 which means the belt should be dominated by the smallest objects. A similar result is found for the Centaurs (Sheppard et al. 2000). The recently discovered scattered disk object, 2003 UB313, is slightly bigger than Pluto. This object has an orbit which is t ...
... the range r to r + dr. For the KBOs q ∼ 4 which means the belt should be dominated by the smallest objects. A similar result is found for the Centaurs (Sheppard et al. 2000). The recently discovered scattered disk object, 2003 UB313, is slightly bigger than Pluto. This object has an orbit which is t ...
Which planet has never been orbited or flown past by a
... • Good colors. Not too complicated looking. Stars have a variety of obvious differences. Plus globular clusters might come in handy later this semester. Sure…I’ll start with this one, but how? Dr. C. Renee James NASA Top Stars 2010 ...
... • Good colors. Not too complicated looking. Stars have a variety of obvious differences. Plus globular clusters might come in handy later this semester. Sure…I’ll start with this one, but how? Dr. C. Renee James NASA Top Stars 2010 ...
pdf - at www.arxiv.org.
... 2012). Although the “precise” classification of a prolonged minimum as a GM event is very important, this minimum has conspicuous properties for which it has been called “exceptional” (e.g., Gibson et al., 2009) and it is important by itself. These properties must also be discussed with other genera ...
... 2012). Although the “precise” classification of a prolonged minimum as a GM event is very important, this minimum has conspicuous properties for which it has been called “exceptional” (e.g., Gibson et al., 2009) and it is important by itself. These properties must also be discussed with other genera ...
On the definition and use of the ecliptic in
... resolutions on reference systems that were adopted between 2000 and 2009. These correspond to major improvements in concepts and realizations of astronomical reference systems, in the use of observational data and the accuracy of the models for the motions of the solar system objects and Earth's rot ...
... resolutions on reference systems that were adopted between 2000 and 2009. These correspond to major improvements in concepts and realizations of astronomical reference systems, in the use of observational data and the accuracy of the models for the motions of the solar system objects and Earth's rot ...
telestar instruction manual
... Observe the Solar System: After observing the Moon, you are ready to step up to the next level of observation, the planets. There are four planets that you can easily observe in your telescope: Venus, Mars, Jupiter and Saturn. Nine planets (maybe more!) travel in a fairly circular pattern around our ...
... Observe the Solar System: After observing the Moon, you are ready to step up to the next level of observation, the planets. There are four planets that you can easily observe in your telescope: Venus, Mars, Jupiter and Saturn. Nine planets (maybe more!) travel in a fairly circular pattern around our ...
Chronology of Physics
... al-Kashi computes pi to sixteen decimal places using inscribed and circumscribed polygons. ...
... al-Kashi computes pi to sixteen decimal places using inscribed and circumscribed polygons. ...
chapter 15 navigational astronomy
... becoming increasingly visible in the evening sky, until (about 7 days after new Moon) it reaches first quarter, when the Moon rises about noon and sets about midnight. Over the next week the Moon will rise later and later in the afternoon until full Moon, when it rises about sunset and dominates the ...
... becoming increasingly visible in the evening sky, until (about 7 days after new Moon) it reaches first quarter, when the Moon rises about noon and sets about midnight. Over the next week the Moon will rise later and later in the afternoon until full Moon, when it rises about sunset and dominates the ...
1 The Hubble Story (10:56)
... around an extrasolar planet was also seen in this planet. The presence of sodium as well as evaporating hydrogen, oxygen and carbon was detected in light filtered through the planet's atmosphere when it passed in front of the star. Hubble has also measured the mass of a planet – only the second time ...
... around an extrasolar planet was also seen in this planet. The presence of sodium as well as evaporating hydrogen, oxygen and carbon was detected in light filtered through the planet's atmosphere when it passed in front of the star. Hubble has also measured the mass of a planet – only the second time ...
Why was Pluto once considered a planet?
... at the time of their discovery. They were classified as planets before their demotion some 50 yyears later. (134340) Pluto seemed unique at the time of its discovery, and it was hailed as a new planet. ...
... at the time of their discovery. They were classified as planets before their demotion some 50 yyears later. (134340) Pluto seemed unique at the time of its discovery, and it was hailed as a new planet. ...
Elements of astronomy
... any other night. They all seem to be at the same distance from us, and to be attached to the surface of a vast hemisphere, of which the place of the observer is the centre. But, although the stars are relatively fixed, the hemisphere, Stars rise obliquely from as a whole, is in constant motion. the ...
... any other night. They all seem to be at the same distance from us, and to be attached to the surface of a vast hemisphere, of which the place of the observer is the centre. But, although the stars are relatively fixed, the hemisphere, Stars rise obliquely from as a whole, is in constant motion. the ...
A Recommendation - Amateur Astronomers, Inc.
... astronomy news circles of a comet, Comet PanSTARRS (C/2011 L4) and its visibility as seen from Earth. As you will be reading this article shortly before the time it is supposed to be at its best, the comet is the subject of this column. Comet With an Odd Name Comet PanSTARRS was discovered on the ni ...
... astronomy news circles of a comet, Comet PanSTARRS (C/2011 L4) and its visibility as seen from Earth. As you will be reading this article shortly before the time it is supposed to be at its best, the comet is the subject of this column. Comet With an Odd Name Comet PanSTARRS was discovered on the ni ...
Volatiles in protoplanetary disks
... emerging complementary study of volatiles in protoplanetary disks thus feeds on comparisons between the properties of current-day solar system material and planet-forming gas and dust during the critical first few million years of the development of exo-planetary systems. This is an area of intense ...
... emerging complementary study of volatiles in protoplanetary disks thus feeds on comparisons between the properties of current-day solar system material and planet-forming gas and dust during the critical first few million years of the development of exo-planetary systems. This is an area of intense ...
Volatiles in protoplanetary disks
... emerging complementary study of volatiles in protoplanetary disks thus feeds on comparisons between the properties of current-day solar system material and planet-forming gas and dust during the critical first few million years of the development of exo-planetary systems. This is an area of intense ...
... emerging complementary study of volatiles in protoplanetary disks thus feeds on comparisons between the properties of current-day solar system material and planet-forming gas and dust during the critical first few million years of the development of exo-planetary systems. This is an area of intense ...
Project Description - SDSS-III
... ratio ∼1:6, flat space, and primordial fluctuations with the statistical properties predicted by inflation. This model requires one very surprising ingredient, “dark energy,” which drives accelerating expansion of the Universe. Large-scale imaging and spectroscopic surveys have revealed rich, comple ...
... ratio ∼1:6, flat space, and primordial fluctuations with the statistical properties predicted by inflation. This model requires one very surprising ingredient, “dark energy,” which drives accelerating expansion of the Universe. Large-scale imaging and spectroscopic surveys have revealed rich, comple ...
Using time to measure distance - AS-A2
... how bright they look and how far away they are. Jupiter and Saturn at opposition together In the winter of the years 2000 to 2001 Jupiter and Saturn appeared very close together in the night sky. They were both in the south at midnight, which means that the Earth was directly between them and the S ...
... how bright they look and how far away they are. Jupiter and Saturn at opposition together In the winter of the years 2000 to 2001 Jupiter and Saturn appeared very close together in the night sky. They were both in the south at midnight, which means that the Earth was directly between them and the S ...
Developments in Space Policies, Programmes and Technologies
... configurations of the Ariane 6 for future launches.1 On the issue of future international cooperation in space transportation and space exploration, the combined use of the ATV and other similar spacecraft from the U.S. (Dragon and Cygnus COTS missions), Japan (HTV) and Russia (Progress M) to serve ...
... configurations of the Ariane 6 for future launches.1 On the issue of future international cooperation in space transportation and space exploration, the combined use of the ATV and other similar spacecraft from the U.S. (Dragon and Cygnus COTS missions), Japan (HTV) and Russia (Progress M) to serve ...
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.