Astronomy
On April 11, 2014 NASA's Cassini spacecraft captured this image of the blue ice-giant planet Uranus [The tiny blue light indicated by the arrow] in the distance beyond Saturn?s rings.
When this view was obtained, Uranus was nearly on the opposite side of the sun as seen from Saturn, at a distance of approximately 28.6 astronomical units from Cassini and Saturn. An astronomical unit is the average distance from Earth to the sun, equal to 150 million kilometers. At their closest, the two planets approach to within about 10 astronomical units of each other.
The planets Uranus and Neptune are sometimes referred to as 'ice giants' to distinguish them from their larger siblings, Jupiter and Saturn, the classic 'gas giants'. The nick names derives from the fact that a comparatively large part of the Uranus and Neptune consists composition of water, ammonia and methane, which are typically frozen as ices in the cold depths of the outer solar system. On the outher side Jupiter and Saturn are made almost entirely of hydrogen and helium, with smaller percentages of these ices.
source:- nasa.gov
- Saturn's Vortex And Rings.
The Cassini spacecraft captures three magnificent sights at once: Saturn's north polar vortex and hexagon along with its expansive rings. The hexagon, which is wider than two Earths, owes its appearance to the jet stream that forms its perimeter....
- Saturn In A Moment Of Solar Eclipse.
This image taken by the Cassini spacecraft shows Saturn at the majestic moment of solar eclipse. The night side of Saturn is seen to be partly lit by light reflected from its own ring system. The rings themselves appear dark when silhouetted against...
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Astronomy
The Uranus from Saturn?s orbit.
When this view was obtained, Uranus was nearly on the opposite side of the sun as seen from Saturn, at a distance of approximately 28.6 astronomical units from Cassini and Saturn. An astronomical unit is the average distance from Earth to the sun, equal to 150 million kilometers. At their closest, the two planets approach to within about 10 astronomical units of each other.
The planets Uranus and Neptune are sometimes referred to as 'ice giants' to distinguish them from their larger siblings, Jupiter and Saturn, the classic 'gas giants'. The nick names derives from the fact that a comparatively large part of the Uranus and Neptune consists composition of water, ammonia and methane, which are typically frozen as ices in the cold depths of the outer solar system. On the outher side Jupiter and Saturn are made almost entirely of hydrogen and helium, with smaller percentages of these ices.
source:- nasa.gov
- Saturn's Vortex And Rings.
The Cassini spacecraft captures three magnificent sights at once: Saturn's north polar vortex and hexagon along with its expansive rings. The hexagon, which is wider than two Earths, owes its appearance to the jet stream that forms its perimeter....
- Saturn In A Moment Of Solar Eclipse.
This image taken by the Cassini spacecraft shows Saturn at the majestic moment of solar eclipse. The night side of Saturn is seen to be partly lit by light reflected from its own ring system. The rings themselves appear dark when silhouetted against...
- Astronomy Milestones
Astronomy Milestones 583 BC : First Prediction of the eclipse of the sun 130BC : Hipparchus calculates distance and size of moon ...
- Planet Saturn
Saturn Mass : ...
- Solar System
Solar System Facts The Solar System formed around 4.6 billion years ago. There are eight planets in the Solar System. The four inner planets are Mercury, Venus, Earth and Mars while the four outer planets are Jupiter, Saturn, Uranus and Neptune.For...