Treasurej Art

Out of the Dust, A Planet is Born

treasurej — Sat, 25 Apr 2009 14:44:45 +0900

http://photojournal.jpl.nasa.gov/catalog/pia05988

Artist's conception of an extrasolar planet in orbit around a star that, according to current models, ought not be more than a million years old. This finding challenges every conventional concept of how long planets require to form in orbit around their

Original Caption Released with Image:

In this artist's conception, a possible newfound planet spins through a clearing in a nearby star's dusty, planet-forming disc. This clearing was detected around the star CoKu Tau 4 by NASA's Spitzer Space Telescope. Astronomers believe that an orbiting massive body, like a planet, may have swept away the star's disc material, leaving a central hole.

The possible planet is theorized to be at least as massive as Jupiter, and may have a similar appearance to what the giant planets in our own solar system looked like billions of years ago. A graceful ring, much like Saturn's, spins high above the planet's cloudy atmosphere. The ring is formed from countless small orbiting particles of dust and ice, leftovers from the initial gravitational collapse that formed the possible giant planet.

If we were to visit a planet like this, we would have a very different view of the universe. The sky, instead of being the familiar dark expanse lit by distant stars, would be dominated by the thick disc of dust that fills this young planetary system. The view looking toward CoKu Tau 4 would be relatively clear, as the dust in the interior of the disc has fallen into the accreting star. A bright band would seem to surround the central star, caused by light scattered back by the dust in the disc. Looking away from CoKu Tau 4, the dusty disc would appear dark, blotting out light from all the stars in the sky except those which lie well above the plane of the disc.

Image Credit: NASA/JPL-Caltech

세계에서 가장 오래된 십자가

treasurej — Mon, 20 Apr 2009 16:57:13 +0900

비잔틴(Bizantin)
천년의 묵은 이끼가 스며있어 고풍을 더한다.
정교회 사제의 가슴에 걸던 십자가 목걸이.

세계의 십자가

treasurej — Mon, 20 Apr 2009 16:45:53 +0900

세계의 십자가

treasurej — Mon, 20 Apr 2009 13:06:01 +0900

세계의 십자가

treasurej — Mon, 20 Apr 2009 12:50:44 +0900

세계의 십자가

treasurej — Mon, 20 Apr 2009 12:40:16 +0900

위성으로 보는 세계의 명소

treasurej — Thu, 20 Mar 2008 10:50:45 +0900

위성사진으로 보는 세계의 명소

나이아가라 폭포를 위성에서 본 사진입니다.

위성사진으로 보는 세계의 유명지가 정말 신기하네요
이토록 선명하다니 정말 놀라울 따름입니다.

이집트의 피라미드

몰디브의 섬들

그랜드 케년

나일강

두바이의 팜 아일랜드

호주의 에어즈락

뉴욕의 그라운드제로

세인트헨렌산

스리랑카를 강타하는 쓰나미의 모습