Tag: Rings of Saturn

A very simple notion.

Our beautiful planet.

As is the way of things, two completely disconnected events rang out yesterday, as if in harmony.

The first was this stunning picture released by NASA.

A distant view of home!
A distant view of home!

The full description may be read here, but I have taken the liberty of republishing this extract:

Earth, which is 898 million miles (1.44 billion kilometers) away in this image, appears as a blue dot at center right; the moon can be seen as a fainter protrusion off its right side. An arrow indicates their location in the annotated version. The other bright dots nearby are stars.

Now it doesn’t take too much imagination to put that minute speck of light, our Planet Earth, into its scale of meaning and importance vis-a-vis the universe.  You get my message, I’m sure.

The second event was a comment left by long-term reader and supporter of Learning from Dogs, Patrice Ayme.  The comment was on yesterday’s post, The meaning of wildness, and I quote:

Excellent article. Clearly primary temperate rain forest, nearly gone everywhere except in the American North west, has to be reintroduced.

Sheep ought not to be removed by man, but be removed by wolf, bear, felids. Cows would feel whole, having to fight off lions. And man’s sense of what nature means, vital to insure our survival, would blossom in this hour of need, when we have arisen as the planet’s gods. gods of evil, or gods of wisdom? That is the most important question.

“gods of evil, or gods of wisdom?”

To everybody I say this.  (And I am most certainly not excluding me.) When you next look at yourself in the mirror will you make a decision?  Will you be a god of evil or a god of wisdom?

Just a small, white dot!

Does rather serve to remind us of our place in the scheme of things.

This stunning image was taken by the Cassini-Huygens probe.  Many of the images taken by NASA are available for download from the DVIDS website, which is where this one was found. (But also do visit the Ciclops website.)

The title of the photograph is:

A View of Earth from Saturn

A View of Earth from Saturn: Image of the Day

Although the Earth Observatory typically reserves ”Image of the Day” space for publishing data and images acquired by Earth-observing satellites, we are sometimes so enthralled by the spectacular images acquired by spacecraft observing other parts of the solar system that we want to share these ‘otherworldy’ views with our visitors. And if you are looking for remotely sensed images of the Earth, this view is the most remotely sensed image we have ever published!

This beautiful image of Saturn and its rings looks more like an artist’s creation than a real image, but in fact, the image is a composite (layered image) made from 165 images taken by the wide-angle camera on the Cassini spacecraft over nearly three hours on September 15, 2006.

Scientists created the color in the image by digitally compositing ultraviolet, infrared, and clear-filter images and then adjusting the final image to resemble natural color. (A clear filter is one that allows in all the wavelengths of light the sensor is capable of detecting.) The bottom image [the one above. Ed.] is a closeup view of the upper left quadrant of the rings, through which Earth is visible in the far, far distance.

On this day, Saturn interceded between the Sun and Cassini, shielding Cassini from the Sun’s glare. As the spacecraft lingered in Saturn’s shadow, it viewed the planet’s rings as never before, revealing previously unknown faint rings and even glimpsing its home world. Seen from more than a billion kilometers (almost a billion miles) away, through the ice and dust particles of Saturn’s rings, Earth appears as a tiny, bright dot to the left and slightly behind Saturn.

Although it might appear that Earth is located within Saturn’s outermost rings, that positioning is just an illusion created by the enormous distance between Cassini and Earth. When Cassini took this image, the spacecraft was looking back at Saturn from a distance of about 2.2.million kilometers (about 1.3 million miles). The Sun was millions of additional miles beyond, hidden behind Saturn. On September 15, Earth’s orbit had brought our home planet to a location slightly behind and to the left of the Sun from Cassini’s perspective. The Website of the Cassini Imaging Central Laboratory for Operations (CICLOPS) provides more detailed information about this image. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency, and the Italian Space Agency.

Trying to find that faint image of Planet Earth in the above photograph is a challenge, even for those with much younger eyes than mine.

However, with a little bit of jiggery-pokery I was able to crop and enlarge the photograph, see below:

saturn

Planet Earth is in the ’10 o’clock’ position in the photograph, about half-way from the centre of the enlarged segment towards the top-left corner of the picture, just outside the outer white ring.

That’s us. All that we have ever been. All that we ever will be. Just that small white dot.