Postingan
Amateur astronomers around the world have noticed the same changes on Saturn: Saturn's rings are rapidly narrowing into a thin line width. Efrain Morales Rivera sends these pictures taken through a backyard telescope in Aguadilla, Puerto Rico.
Comparison of Saturn in 2007 and 2008. Photo Credit: Efrain Morales Rivera"The rings have narrowed considerably in the last year," he said. Regional or Cassini Cassini Division (a dark gap in Saturn's rings is called Cassini) getting hard to see. The same phenomenon occurred four hundred years ago and was confusing Galileo, as the first person who in 1610 discovered Saturn's rings through a primitive telescope. He was dumbfounded when the rings winked out little more than a year later.So, what actually happened? Now, the same event is: we're experiencing a "ring plane crossing" (ring plane crossing). While it is in her travels around the Sun, Saturn turned the ring becomes parallel to the line of sight from Earth (edge-on) once every 14-15 years. Because the rings are so thin, they can actually disappear when viewed through small telescopes.
In the months ahead, Saturn's rings will become thinner and thinner until they "lost" on September 4, 2009. When this happened in 1612, Galileo ignored the study of the planet. In fact, we know then, moments of "ring plane crossing" as this is a good time to find satellites and a new outer ring of Saturn. In addition, when such is also a good time to look at Saturn's north pole is blue. In 2005, the Cassini spacecraft flew over the northern hemisphere of Saturn and found that the sky as blue as the sky where the Earth itself. For years, only Cassini could enjoy the view of this, because of the Earth, the top covered by a blue Saturn Saturn's rings.Galileo never understood the true nature of Saturn's rings. He did not know that they are actually a collection of small satellites that orbit in the orbital plane disc, size of the dust for months until we (The possibility of these rings is debrisatau debris from the destroyed satellite, but the scientists themselves are still not sure of this).Through his telescope the 17th century, the ring is more like ears or planetary lobes of a kind.
However, his intuition guided him to make a correct prediction, that the rings that they'll be back. And he was right. Saturn's rings up again and scientists resumed their study. In 1659, Christiaan Huygens correctly explained the periodic disappearances ring during the "ring plane crossing" or "ring plane crossing" this. In 1660, Jean Chapelain argued that Saturn's rings were not solid but made of tiny particles which are very numerous and each independently orbiting Saturn. For two hundred years, the suggestion was not widely accepted, before it was proven true.
Saturn's rings are very wide but very thin. Astronomers using the Hubble Space Telescope captured images of the rings this flat (edge-on) in 1995. Star-like objects in the ring plane in the figure is icy satellites. Image Credit: NASA
No need to grieve with the "unfortunate loss" of Saturn's rings are. Saturn is still a beautiful object to look through even small telescopes. In fact, this week is actually a good week to observe Saturn. On Tuesday, March 18 and Wednesday, March 19, the Moon is nearly full moon and Saturn will be lined up in the same part of the evening sky. This makes Saturn easy to find, not as usual. After the sun went down, look at the Moon ekeliling sHere area, and voila! Saturn looks like a "gold star" light near the Moon. If you pass through the March 18-19 encounter, try again on April 14 to 15. Moon and Saturn will be close together and the rings even narrower.
Comparison of Saturn in 2007 and 2008. Photo Credit: Efrain Morales Rivera"The rings have narrowed considerably in the last year," he said. Regional or Cassini Cassini Division (a dark gap in Saturn's rings is called Cassini) getting hard to see. The same phenomenon occurred four hundred years ago and was confusing Galileo, as the first person who in 1610 discovered Saturn's rings through a primitive telescope. He was dumbfounded when the rings winked out little more than a year later.So, what actually happened? Now, the same event is: we're experiencing a "ring plane crossing" (ring plane crossing). While it is in her travels around the Sun, Saturn turned the ring becomes parallel to the line of sight from Earth (edge-on) once every 14-15 years. Because the rings are so thin, they can actually disappear when viewed through small telescopes.In the months ahead, Saturn's rings will become thinner and thinner until they "lost" on September 4, 2009. When this happened in 1612, Galileo ignored the study of the planet. In fact, we know then, moments of "ring plane crossing" as this is a good time to find satellites and a new outer ring of Saturn. In addition, when such is also a good time to look at Saturn's north pole is blue. In 2005, the Cassini spacecraft flew over the northern hemisphere of Saturn and found that the sky as blue as the sky where the Earth itself. For years, only Cassini could enjoy the view of this, because of the Earth, the top covered by a blue Saturn Saturn's rings.Galileo never understood the true nature of Saturn's rings. He did not know that they are actually a collection of small satellites that orbit in the orbital plane disc, size of the dust for months until we (The possibility of these rings is debrisatau debris from the destroyed satellite, but the scientists themselves are still not sure of this).Through his telescope the 17th century, the ring is more like ears or planetary lobes of a kind.
However, his intuition guided him to make a correct prediction, that the rings that they'll be back. And he was right. Saturn's rings up again and scientists resumed their study. In 1659, Christiaan Huygens correctly explained the periodic disappearances ring during the "ring plane crossing" or "ring plane crossing" this. In 1660, Jean Chapelain argued that Saturn's rings were not solid but made of tiny particles which are very numerous and each independently orbiting Saturn. For two hundred years, the suggestion was not widely accepted, before it was proven true.
Saturn's rings are very wide but very thin. Astronomers using the Hubble Space Telescope captured images of the rings this flat (edge-on) in 1995. Star-like objects in the ring plane in the figure is icy satellites. Image Credit: NASA
No need to grieve with the "unfortunate loss" of Saturn's rings are. Saturn is still a beautiful object to look through even small telescopes. In fact, this week is actually a good week to observe Saturn. On Tuesday, March 18 and Wednesday, March 19, the Moon is nearly full moon and Saturn will be lined up in the same part of the evening sky. This makes Saturn easy to find, not as usual. After the sun went down, look at the Moon ekeliling sHere area, and voila! Saturn looks like a "gold star" light near the Moon. If you pass through the March 18-19 encounter, try again on April 14 to 15. Moon and Saturn will be close together and the rings even narrower.
Tidak ada komentar:
Posting Komentar