Posts Tagged ‘sun’

NASA | SDO’s Ultra-high Definition View of 2012 Venus Transit

June 7, 2012
Transit of Venus

Transit of Venus

Two nights ago, a Transit of Venus took place

Launched 11 February 2010, the Solar Dynamics Observatory, or SDO, is the most advanced spacecraft ever designed to study the sun. During its five-year mission, it will examine the sun’s atmosphere, magnetic field and also provide a better understanding of the role the sun plays in Earth’s atmospheric chemistry and climate. SDO provides images with resolution 8 times better than high-definition television and returns more than a terabyte of data each day.

On 5 June 2012, SDO collected images of the rarest predictable solar event–the transit of Venus across the face of the sun. This event happens in pairs eight years apart that are separated from each other by 105 or 121 years. The last transit was in 2004 and the next will not happen until 2117.

The videos and images displayed here are constructed from several wavelengths of extreme ultraviolet light and a portion of the visible spectrum. The red colored sun is the 304 angstrom ultraviolet, the golden colored sun is 171 angstrom, the magenta sun is 1700 angstrom, and the orange sun is filtered visible light. 304 and 171 show the atmosphere of the sun, which does not appear in the visible part of the spectrum.

Top Story in EARTH recommended (Friday 8 June 2012).

Spiritual experience of a sunset

March 5, 2011

There were dark clouds covering the sky, it had been raining, seeing the sun set was not likely, then minutes before the sun was due to set a sliver of clear sky, little wider than half that subtended by the sun opened up beneath the clouds, between the clouds and the horizon. It lit up, glowing red like molten lava running off the mountains and along the sea.

Then the sun dipped below the clouds. It was like a looking into molten gold.

It was easy to see why our ancient predecessors worshipped the sun. The giveth of life, the taketh away of life.

I felt sad my lovely friend Sian was not with me to share the experience.

I could see the sun moving. Slowly it sank below the horizon, then disappeared from sight. As it did so, the clouds caught fire.

I was reminded of a passage in The Valkeryies, where Paulo Coelho goes off in search of his angel in the Mojave Dessert. A shock wave in the air like the close passing of a high speed train, then he is aware of a presence. He is told not to look around. A bright light as bright as the rising sun to his side. Then a golden arm glowing as bright as the sun reached in front of him to write in the sand.

An intense light, almost as strong as the morning sun, shone on his left side … He looked down at the area he had just swept clear. QAnd that was when the golden arm, as brilliant as the sun appeared, and began to write in the sand.

I regret I did not have my camera, but then maybe better I did not, as instead of trying to record, my focus was on the sun.

We are told not to look direct at the sun. For some time later the sun was etched on my retina.

Star size and the known size of the universe

November 14, 2010

No, we are not the centre of the universe.

Music in the second video is from The Mass by Eric Levi from the Era trilogy.

Summer Solstice at Stonehenge

June 23, 2010
Sunrise on Summer Solstice at Stonehenge

Sunrise on Summer Solstice at Stonehenge

Summer Solstice at Stonehenge marks the longest day. It is when the sun reaches its most northerly point in the sky. It occurs on 21st of June.