Friday, January 07, 2011

Andromeda’s Once and Future Stars



Two European Space Agency observatories combined forces to show the Andromeda Galaxy in a new light. Herschel sees rings of star formation in this, the most detailed image of the Andromeda Galaxy ever taken at infrared wavelengths, and XMM-Newton shows dying stars shining X-rays into space.

ESA’s Herschel and XMM-Newton space observatories targeted the Andromeda Galaxy, the nearest large spiral galaxy, which like our own Milky Way contains several hundred billion stars. This is the most detailed far-infrared image of the Andromeda Galaxy ever taken and clearly shows that more stars are on their way.

In this image, Herschel’s infrared image of the Andromeda Galaxy shows rings of dust that trace gaseous reservoirs where new stars are forming and XMM-Newton’s X-ray image shows stars approaching the ends of their lives. Both infrared and X-ray images convey information impossible to collect from the ground because these wavelengths are absorbed by Earth’s atmosphere.

For more information and images, visit the ESA site.

Image Credit: ESA/Herschel/PACS/SPIRE/J.Fritz, U.Gent/XMM-Newton/EPIC/W. Pietsch, MPE

Thursday, January 06, 2011

Venus Rising



This hemispheric view of Venus was created using more than a decade of radar investigations culminating in the 1990-1994 Magellan mission, and is centered on the planet's North Pole. The Magellan spacecraft imaged more than 98 percent of the planet Venus and a mosaic of the Magellan images (most with illumination from the west) forms the image base. Gaps in the Magellan coverage were filled with images from the Earth-based Arecibo radar in a region centered roughly on 0 degree latitude and longitude, and with a neutral tone elsewhere (primarily near the south pole). This composite image was processed to improve contrast and to emphasize small features, and was color-coded to represent elevation. Gaps in the elevation data from the Magellan radar altimeter were filled with altimetry from the Venera spacecraft and the Pioneer Venus missions.

Image Credit: NASA/JPL/USGS

Wednesday, January 05, 2011

Poem of the week

Twenty-Eight and Twenty-Nine by Winthrop Mackforth Praed

"Rien n'est changé, mes amis" – Charles X

I heard a sick man's dying sigh,
  And an infant's idle laughter;
The Old Year went with mourning by,
  The New came dancing after.
Let Sorrow shed her lonely tear,
  Let Revelry hold her ladle!
Bring boughs of cypress for the bier,
  Fling roses on the cradle:
Mutes to wait on the funeral state!
  Pages to pour the wine!
A requiem for Twenty-eight,
  And a health to Twenty-nine!

Alas for human happiness!
  Alas for human sorrow!
Our yesterday is nothingness, -
  What else will be our morrow?
Still Beauty must be stealing hearts,
  And Knavery stealing purses,
Still cooks must live by making tarts,
  And wits by making verses:
While sages prate, and courts debate,
  The same stars set and shine;
And the world, as it rolled through Twenty-eight,
  Must roll through Twenty-nine.

Some King will come, in Heaven's good time,
  To the tomb his father came to;
Some thief will wade through blood and crime
  To a crown he has no claim to;
Some suffering land will rend in twain
  The manacles that bound her,
And gather the links of the broken chain
  To fasten them proudly round her;
The grand and great will love and hate,
   And combat, and combine;
And much where we were in Twenty-eight
  We shall be in Twenty-nine.

O'Connell will fail to raise the rent,
  And Kenyon to sink the nation,
And Shiel will abuse the Parliament
  And Peel the Association;
And the thought of bayonets and swords
  Will make ex-chancellors merry,
And jokes will be cut in the House of Lords,
  And throats in the county Kerry;
And writers of weight will speculate
  On the Cabinet's design,
And just what it did in Twenty-eight
  It will do in Twenty-nine.

Mathews will be extremely gay,
  And Hook extremely dirty:
And brick and mortar still will say,
  "Try Warren, No. 80."
And "General Sauce" will have its puff,
  And so will General Jackson;
And peasants will drink heavy stuff,
  Which they put a heavy tax on:
And long and late, at many a fête,
  Gooseberry champagne will shine;
And as old as it was in Twenty-eight,
  It will be in Twenty-nine.

John Thomas Mugg, on a lonely hill,
  Will do a deed of mystery;
The Morning Chronicle will fill
  Five columns with the history;
The jury will be all surprise,
  The prisoner quite collected,
And Justice Park will wipe his eyes
  And be very much affected;
And folks will relate poor Corder's fate
  As they hurry home to dine,
Comparing the hangings of Tweny-eight
  With the hangings of Twenty-nine.

And the goddess of love will keep her smiles,
  And the god of cups his orgies,
And there will be riots in St. Giles,
  And weddings in St George's.
And mendicants will sup like kings,
  And lords will swear like lackeys,
And black eyes oft will lead to rings
  And rings will lead to black eyes;
And pretty Kate will scold her mate
  In a dialect all divine;
Alas! They married in Twenty-eight, -
  They will part in Twenty-nine!

And oh! I shall find how, day by day,

  All thoughts and things look older;
How the laugh of pleasure grows less gay,
  And the heart of friendship colder;
But still I shall be what I have been,
  Sworn foe to Lady Reason,
And seldom troubled with the spleen,
  And fond of talking treason:
I shall buckle my skate, and leap my gate,
  And throw – and write – my line;
And the woman I worshipped in Twenty-eight
  I shall worship in Twenty-nine!