Category Archives: science

The Upper Michigan Blizzard of 1938

Posted on by
Reply

Google+ reshared post

The Upper Michigan Blizzard of 1938
Image Credit: Bill Brinkman; Courtesy: Paula Rocco
https://apod.nasa.gov/apod/ap180121.html

Yes, but can your blizzard do this? In Upper Michigan’s Storm of the Century in 1938, some snow drifts reached the level of utility poles. Nearly a meter of new and unexpected snow fell over two days in a storm that started 80 years ago this week. As snow fell and gale-force winds piled snow to surreal heights; many roads became not only impassable but unplowable; people became stranded; cars, school buses and a train became mired; and even a dangerous fire raged. Fortunately only two people were killed, although some students were forced to spend several consecutive days at school. The featured image was taken by a local resident soon after the storm. Although all of this snow eventually melted, repeated snow storms like this help build lasting glaciers in snowy regions of our planet Earth.

 

Importé de Google+

Ribbons and Pearls of Spiral Galaxy NGC 1398

Posted on by
Reply

Google+ reshared post

Ribbons and Pearls of Spiral Galaxy NGC 1398
Image Credit: European Southern Observatory
https://apod.nasa.gov/apod/ap180123.html

Why do some spiral galaxies have a ring around the center? Spiral galaxy NGC 1398 not only has a ring of pearly stars, gas and dust around its center, but a bar of stars and gas across its center, and spiral arms that appear like ribbons farther out. The featured image was taken with ESO’s Very Large Telescope at the Paranal Observatory in Chile and resolves this grand spiral in impressive detail. NGC 1398 lies about 65 million light years distant, meaning the light we see today left this galaxy when dinosaurs were disappearing from the Earth. The photogenic galaxy is visible with a small telescope toward the constellation of the Furnace (Fornax). The ring near the center is likely an expanding density wave of star formation, caused either by a gravitational encounter with another galaxy, or by the galaxy’s own gravitational asymmetries.

 

Importé de Google+

Powerful earthquake strikes Pakistan, raises new island

Posted on by
Reply

J’espere que ce n’est pas une rumeur du net que je propage. Mais si c’est une rumeur, elle semble etre persistente au point de m’avoir berner 😉

Google+ reshared post

The new island off Pakistan’s southern coast, raised from the sea floor after yesterday’s 7.7 earthquake there.

Read more: http://bit.ly/1eGO5A7

Scientists are calling it a "mud volcano" and don’t expect it to last.

Image from DieWelt.

Importé de Google+