Monday, December 13, 2010

APOD 2.5

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In the center of this picture is M81, a spiral galaxy similar to the Milky Way.  This galaxy is 11.8 million light-years away from Ursa Major.  The galaxy has a bright yellow core with blue spirals branching off and paths of dust around the center.  Another feature of the galaxy is Arp's Loop.  Arp's Loop is a tidal tail of material that is being pulled by the gravity of a nearby galaxy M82.  

APOD 2.4

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This picture was taken from the Mars Express and it is of Phobos, the innermost moon of Mars.  Phobos is an extremely dark color, the darkest moon in the solar system in fact.  Many believe that Phobos was a captured asteroid due to its composition of ice and dark rock and due to its irregular shape.  It is also heavily cratered as it has most likely endured many collisions over time.  Phobos orbits very close to Mars and will likely break up and crash into the Martian Surface.  

APOD 2.3

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This picture shows a phenomena that has been occurring on Jupiter.  Clouds on the planet are disappearing and reappearing.  The cause is unknown but meteorologists are trying to determine what is going on.  These changes have been noted as changes in color to the Southern Equatorial Belt and it has also been noted to disappear.  Professional observations have revealed that there are light ammonia clouds that are dissipating and therefore unveiling the darker lower clouds.  This explains the belt disappearing and it also explains the changes in color.  

Observation 2.1

Date - 12/11/10
Time - 8pm 

I was at Twin Lakes Park with some friends and I looked up in the sky towards the east.  The skies were clear so I was able to observe many stars.  One star that caught my eye was a reddish star that I believed to be Betelgeuse.  The star was brighter than any in its vicinity.  Its brightness and reddish/orange tint lead me to believe it was the giant star in Orion.  

Wednesday, November 17, 2010

APOD 2.2

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The Necklace Nebula is an intriguing object.  It is located in the constellation Sagitta.  The nebula is ring-shaped.  It is referred to as a cosmic piece of jewelry as it also shines with glowing gas.  It is also located about 15,000 light-years away.  Astronomers estimated the age of the ring to be 5,000 years.

APOD 2.1

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This is beautiful picture taken from Spain of the clouds with birds flying.  This picture also draws astronomical as both the Moon and Venus are in the picture.  Venus is the furthest right in the picture and directly to its left is the moon.  In the foreground dark storm clouds are present with a white anvil above.  A whole flock of birds is pictured soaring through the air.

Tuesday, October 26, 2010

APOD 1.8

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This image shows an interesting feature of the sun.  This sort of eruption coming from the sun is called a solar prominence.  This prominence was observed by the satellite SOHO and is one of the largest ever on record.  Although it may not appear that big but the earth could fit inside the picture prominence.  A prominence is a thin cloud of solar gas above the Sun's magnetic field.  This type of prominence is called an eruptive prominence.

Monday, October 18, 2010

Isaac Newton Biography

Isaac Newton was born on January 4th 1643 at Woolsthorpe Manor in the county of Lincolnshire.  He was born prematurely and without a father.  At the age of three his mother remarried to man that Isaac disliked but he was placed in the care of his grandmother.
From the ages of 12 to 17, Isaac attended the King’s School, Grantham.  His mother was widowed for the second time and she took Isaac out of school to become a farmer.  Henry Stoke, master at the King’s School, persuaded Isaac’s mother to let him go back to school.  With the motivation for revenge against a schoolyard bully, Isaac became the top-ranked student.  In 1661, he was admitted to Trinity College, Cambridge as a sizar.  After Cambridge closed down for precautionary reasons due to the black plague, Newton did some private studies in which his theories for calculus, optics, and the law of gravitation were developed.  After Cambridge was reopened, Isaac was elected to the Lucasian Chair, a very prestigious position.  An issue arose because it was required that Isaac became an ordained priest in order to hold the position.  Newton didn’t want to be ordained so Charles II gave special permission and Newton avoided it. 
Some of Newton’s best work was done in the field of mathematics.  It has been said that Newton’s work “distinctly advanced every branch of mathematics then studied.”  Newton wrote a manuscript dealing with infinite series.  This manuscript was sent to John Collins, an English Mathematician.  Newton eventually went on to develop infinitesimal calculus which caused a dispute.  This dispute was with Gottfried Leibniz, who also developed infinitesimal calculus independent of Newton, over who had priority in the development of infinitesimal calculus.  Most historians believe they each worked independently but Leibniz published his research in 1684 and Newton didn’t give his full report until 1704.  Newton wrote PhilosophiƦ Naturalis Principia Mathematica.  This book is regarded as one of the most important books to the history of science ever written.  Newton later revised it and wrote two newer editions one in 1713 and another in 1726. 
Newton also did some great work in the field of optics.  Some of the topics he dealt with were the refraction of light, the decomposition of white light in a prism into a spectrum of colors, and how a lens and a second prism could revert the spectrum of colors back into white light.  Newton also devised a theory of color.  This theory states that objects don’t create their own color but their color is a result of the objects interaction with colored light.  Newton wrote a Hypothesis of Light in 1675.  In this hypothesis Newton expressed his interest in alchemy as he talked about ether and its effect on light.  Some went as far as saying “Newton wasn’t the first of the age of reason but the last of the magicians.” Newton also published Opticks which referred to his corpuscular theory of light. 
Newton also did a lot of research on astronomy, mainly gravitation.  He revised kepler’s laws of planetary motion and stated the three laws of motion.  His biggest discovery was the Law of Universal Gravitation.  He presented a heliocentric view of our solar system which was also a heavily debated topic Newton was involved in. 
Newton went on to do some religious work in his later life.  He also appeared to have pursued alchemy which was thought because of the large amounts of mercury in his system after his death.  This is only speculation but a possibility.  Newton’s legacy is incredible as he made numerous sizable discoveries across a plethora of scientific fields. 

Friday, October 15, 2010

APOD 1.7

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The spiral galaxy, NGC 2683, is an island universe that lies 20 light years away from the constellation the Cat.  This view shows the galaxy nearly edge-on and shows galaxies in the distance.  Old yellow stars glows from the galaxies core.  This galaxy also features the blue glow of many young star clusters.

APOD 1.6

Pacman and Hartley

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In this picture is comet Hartley 2.  On October 20th this comet is going to make its closest approach to their earth and on October 28th it will make its closest approach to the sun.  This comet may even become visible to the naked eye.  To the left of the picture is the pacman nebula.  This nebula is defined by its red dust clouds. 

Friday, October 8, 2010

APOD 1.5

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This picture shows the Horsehead Nebula and the Orion Nebula.  These two nebulas both lie 1,500 light-years away in the constellation Orion.  The Horsehead nebula looks like a dark cloud.  The star Alnitak is the easternmost star in Orion's belt and it is also pictured here to the left of the Horsehead.  Below Alnitak and to the left of the Horsehead is the Flame Nebula.  To the right of the picture is the M42 or the Orion Nebula.  The Orion Nebula is an emission region.  Next to the Orion nebula is the bluish reflection nebula. 

Monday, October 4, 2010

APOD 1.4

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This picture is of one of Jupiter's moons, Io.  Io is often called the strangest moon in the universe due to its bright yellow color.  This yellow tint comes from sulfur and silicate rock.  Io also has many active volcanoes.
They erupt because Jupiter's gravitational pull causes friction on the moon.  This friction causes heat which melts the interior and causes molten rock to explode out of the volcanoes.  These volcanoes are very active and erupt regularly effectively turning the moon inside out.

Tuesday, September 21, 2010

Observation 1.1

At 12:06 am I observed the moon and saw that it was a full moon.  The moon was very white, bright and appeared as if it were glowing.  I wasn't able to determine any constellations but I saw a very bright star which was located approximately 6 degrees from the moon.  

APOD 1.3

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The Northern Lights are a spectacular scene of green light that spread through the sky.  This phenomena is called Aurora Borealis and can only be seen from northern latitudes.  This particular picture was taken from about 30 km east of Yellowknife, Northwest Territories, Canada.  The lights span long distances such as the 180 degrees this one covered.  These lights are caused by energized particles in the upper atmosphere and they are green because of molecular oxygen.  

Sunday, September 12, 2010

APOD 1.2

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Charles Messier was an 18th century astronomer.  While observing he kept a list of objects that weren't comets.  This is list is called Charles Messier's Catalog of Nebulae and Star Clusters.  The object in the picture is Messier 27 or M27.  M27 is a gaseous emission nebula.  These are made when stars run out of nuclear fuel in their cores.  The outer layers are released into space while the atoms provide a glow of ultraviolet light.  The common name of this object is the Dumbbell Nebula.

Tuesday, September 7, 2010

APOD 1.1

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This picture is very cool.  In the sky of the picture are 4 different planets and an important star.  The picture was taken from the top of Mount Lawu.  Above the mountains in the distance are the four planets; Mercury, Venus, Mars, and Saturn.  The star Regulus is also in the picture which is the alpha star in the constellation Leo.