Jump to content

zanimljive slike


Guest

Recommended Posts

Ove slike su egal ovim vicevima

Isto sto i u:

Trci trotoar, bandera pade, auto skrenu.

Pliva podmornica pustinjom, udari u banderu, pa pogleda gore, vidi sovu i pita je: "Kolikoje sati?"

Ona izvadi toplomer i kaze: "Cetvrtak."

Imas tri sardine. Jednu bacis u more, drugu u jezero, a trecu nemas. Koliko imas sardina?

Pa dve?

Ne nego pet! One dve i one tri sto nemas to su ti pet!

Stajala tegla sa krastavcima na stolu i krastavci se prosuli.

Razgovaraju malo vode na dlanu i magaeci kasalj.

"Cuti da te bolje cujem!", rece magareci kasalj.

"Svaka cast ali ja nemam tri kile i sto grama!", rece malo vode na dlanu a malo u podrumu.

Sto ce reci, nekome je smesno, nekome nije, logike nema, i generalno ne bi trebalo da bude smesno. Isti fazon Dolan (ne razumete Dolana)

Link to comment
Share on other sites

ALMA Sheds Light on Planet-Forming Gas Streams

Tantalising signs of flows feeding gas-guzzling giant planets

2 January 2013

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) telescope have seen a key stage in the birth of giant planets for the first time. Vast streams of gas are flowing across a gap in the disc of material around a young star. These are the first direct observations of such streams, which are expected to be created by giant planets guzzling gas as they grow. The result is published on 2 January 2013 in the journal Nature.

http://www.eso.org/public/news/eso1301/

The international team of astronomers studied the young star HD 142527, over 450 light-years from Earth, which is surrounded by a disc of gas and cosmic dust — the remains of the cloud from which the star formed. The dusty disc is divided into an inner and an outer part by a gap, which is thought to have been carved by newly forming gas giant planets clearing out their orbits as they circle the star. The inner disc reaches from the star out to the equivalent of the orbit of Saturn in the Solar System, while the outer disc begins about 14 times further out. The outer disc does not surround the star uniformly; instead, it has a horseshoe shape, probably caused by the gravitational effect of the orbiting giant planets.

According to theory, the giant planets grow by capturing gas from the outer disc, in streams that form bridges across the gap in the disc.

“Astronomers have been predicting that these streams must exist, but this is the first time we’ve been able to see them directly,” says Simon Casassus (Universidad de Chile, Chile), who led the new study. “Thanks to the new ALMA telescope, we’ve been able to get direct observations to illuminate current theories of how planets are formed!”

Casassus and his team used ALMA to look at the gas and cosmic dust around the star, seeing finer details, and closer to the star, than could be seen with previous such telescopes. ALMA’s observations, at submillimetre wavelengths, are also impervious to the glare from the star that affects infrared or visible-light telescopes. The gap in the dusty disc was already known, but they also discovered diffuse gas remaining in the gap, and two denser streams of gas flowing from the outer disc, across the gap, to the inner disc.

“We think that there is a giant planet hidden within, and causing, each of these streams. The planets grow by capturing some of the gas from the outer disc, but they are really messy eaters: the rest of it overshoots and feeds into the inner disc around the star” says Sebastián Pérez, a member of the team, who is also at Universidad de Chile.

551240_401607843255247_162486888_n.jpg

  • Upvote (+1) 2

Унутра је сигурно читава експлозија радости и магије!

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.
×
×
  • Create New...