... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... Near its first quarter phase, the bright Moon was intentionally overexposed but Saturn , Jupiter , Mars , and Mercury (and, of course, planet Earth's horizon) are all clearly visible in the deepening twilight. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: Moon - Jupiter - Mars - Earth - planet - Venus - Saturn - Mercury - sky . Publications with words: Moon - Jupiter - Mars - Earth - planet - Venus - Saturn - Mercury - sky . ... Earth at Twilight . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. ... Planets Above The Clouds . ... Taken on April 7th, this skyscape features a dramatic lunar and planetary alignment . An overexposed crescent moon dominates the celestial scene, but the bright "star" just below and to its right is Saturn while further below Saturn is a close pairing of brilliant Jupiter and a fainter, yellowish Mars . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

... Historical Data . Orbital Data . Physical Data . ... Sun . ... Jupiter . ... Saturn . ... William Herschel . ... William Cranch Bond . ... William Henry Pickering . Uranus . ... 1986 . Voyager 2 . ... William Lassell . ... J. Christy Key: Name Name of the planet or satellite. Orbits Sun or planet about which it orbits. ...

Moon, Planets And Aurora, Oh My! Articles | ... Moon | ... How often do we see several planets and the Moon together? ... Then I look northeast and see more red through all the light pollution of Washington, D.C. I snapped this 15 second photo. ... What started out as a father son photographic safari for rare planet conjunctions turned into a spectacular night of memories. ... Aha, I see some red light near Orion. ... A Very Rare Red Aurora in Northern Virginia, . ... www.astronomy.net . ...

Whoever looked up at the sky at dusk on Monday, 1st December was fortunate enough to see one of the most beautiful night-sky views of the year тАУ a massing of planetary bodies in the south-west. The gas giant planet, Jupiter, was nearly in conjunction with bright, тАШevening starтАЩ, Venus, and the Moon. ... The images show, respectively, the telescope and Venus emerging from behind the Moon, after the end of the occultation, while Jupiter is above and to the right. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Monthly Sky Notes . ... October . ... By admin October 8, 2010 Posted in: Monthly Sky Notes . A giant from close up: an image made using data from the Cassini probe which flew past Jupiter in 2000. ... As it is so far from us, it takes JupiterтАЩs light a significant time to reach us тАУso when you see Jupiter tonight you are seeing it as it was 35€а minutes in the past. ... Posted October 12, 2010 at 11:15 PM . ... Astronotes . ...

... Gallery . ... Planet Pictures . Mars . The moons of Mars . Sidebar Left . Sidebar Top . No Sidebar . ... Sidebar Right . View full size . Title: The moons of Mars . Description: The view above shows an over-exposed planet Mars with its moons Phobos and Deimos either side. Deimos is at the far left while Phobos is to the right in the "halo-glow". ... The moons of Mars The view above shows an over-exposed planet Mars with its moons Phobos and Deimos either side. ...

Table of Contents . ... Image and Animation Index . Solar System Introduction . ... Educator's Guide to Convection . ... Chronology of Sun Exploration . ... Chronology of Mercury Exploration . ... Chronology of Venus Exploration . ... Mars . Mars Introduction . ... Selected Images from Mars Pathfinder . ... Chronology of Mars Exploration . ... Mars Image Browser . ... Galileo Spacecraft Press Releases and Information . ... Comets . ... Chronology of Comet Space Exploration . ... Introduction . ...

In ancient times the solar system was thought to be the whole Universe, so the study of planetary motions was cosmology. ... The planets other than the Moon and Sun generally move West to East through the stars, but occasionally stop and move in the opposite direction ( retrograde motion). In order to explain the retrograde motion of the planets, the geocentric model of the Solar System shown above puts the planets on small circles called epicycles . ...

List of publications . ... Moscow University Press. 160 pp. ... Shevchenko V.V. A Lunar Base. Moscow. ... Shevchenko V.V., Chikmachev V.I. Lunar Base - a Project of XXI Century. ... Shevchenko V.V., Pugacheva S.G., Dehktereva K.I. Brightness Characteristics of the Infrared and Visible Radiation of the Lunar Surface. ... Problems of Complex Research of the Moon. ... Solar System Research. ... Baydal G.M., Sizentzev G.A., Sotnikov B.I., Shevchenko V.V. Lunar Base Infrastructure and Lunar Resources. ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Planets and Brown Dwarfs . ... Mission Definition . Ask anyone on the street to give an example of a planet, and they'll consider you a bit dim. ... Finally, if you ask "What is the exact scientific definition of 'planet'?", it turns out that nobody can answer it, because there really isn't one. ... The word itself means "wanderer" in Greek, and other cultures generally have words for "planet" with a similar meaning. So why isn't that good enough for us today? ...

... Contents . ... Sidereal time . ... Mean longitude of the Moon, mean elements of the Moon's orbit and equator . ... Ephemeris for physical observations of the Sun . ... Ephemeris for physical observations of the Moon . ... Matrix elements for conversion to CIRS . ... Conversion of mean time to sidereal time (with accuracy 0.01 s ) . ... Conversion of sidereal time to mean time (with accuracy 0.01 s ) . ... Conversion of mean time to sidereal time (with accuracy 0.001 s and 0.0001 s ) . ...

... Go directly to the moons of: . Mercury Venus Mars Jupiter Saturn Uranus Neptune Pluto . Go directly to the surface features of Earth's Moon and Mars . Planet & Moons . Pronunciation . ... Mercury . ... Mars: . 2 moons . ... Jupiter: . ... Neptune: . ... 1 moon . ...

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

. Aristarchus was extremely clever and also figured out a way to determine the ratio of distances between the earth and the moon and the earth and the sun. While wrong, at least he reasoned that the sun was much farther from the earth than the moon. Just Try and Follow this! . Summary of Greek Science .

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

... The planets differ greatly in size and properties, and their fields differ too. ... In 1959, after the Earth's radiation belt had been discovered, Frank Drake observed Jupiter and concluded from the relative intensities in a range of wavelengths that the signal was probably emitted by electrons trapped in a strong magnetic field. Then in 1973 the space probe Pioneer 10 passed by Jupiter and found there, sure enough, an enormous planetary magnetic field and a very intense radiation belt. ...