우리집마당

Bright stars, clouds of dust and glowing nebulae decorate this cosmic scene, a skyscape just north of Orion's belt. Close to the plane of our Milky Way Galaxy, the wide field view spans about 5.5 degrees. Striking bluish M78, a reflection nebula, is at the left. M78's tint is due to dust preferentially reflecting the blue light of hot, young stars. In colorful contrast, the red sash of glowing h..

우주 2017. 3. 18. 23:59

Cosmic clouds of gas and dust drift across this magnificent mosaic covering a 12x12 degree field within the high flying constellation Cygnus. The collaborative skyscape, a combination of broad and narrow band image data presented in the Hubble palette, is anchored by bright, hot, supergiant star Deneb, below center near the left edge. Alpha star of Cygnus, Deneb, is the top of the Northern Cross..

우주 2017. 3. 15. 18:24

Bright, hot, supergiant star Deneb lies at top center in this gorgeous skyscape. The 20 frame mosaic spans an impressive 12 degrees across the northern end of Cygnus the Swan. Crowded with stars and luminous gas clouds along the plane of our Milky Way Galaxy, Cygnus is also home to the dark, obscuring Northern Coal Sack Nebula, extending from Deneb toward the bottom center of the view. The reddi..

우주 2017. 3. 14. 22:15

※ 백조자리(Cygnus Constellation) 백조자리(Cygnus Cnstellation)는 밝은 1등성인 알파(α)별 데네브(Deneb)를 기점으로 해서 2등성과 3등성의 별들이 커다란 십자가의 모습을 하고 있는 것을 볼 수 있다. 이들은 북십자성(Northern Cross)으로도 불리는 백조자리의 가장 중심이 되는 별들이다. 북십자성의 주위에는 4등성과 5등성의 별들이 약간 대칭을 이루면서 좌우에 위치한다. 사진의 오른쪽 위에 위치한 노란색의 베타(β)별 알비레오(Albireo)는 백조의 머리 부분에 해당한다. 알비레오는 육안으로는 하나로 보이지만 망원경으로 보면 3등급의 노란색 별과 5등급의 푸른색 별로 이루어진 이중성으로 구분하여 볼 수 있다. 또한 알비레오는 밤하늘에서 색의 대비가 가장 ..

우주 2017. 3. 14. 15:50

The best known asterism in northern skies, The Big Dipper is easy to recognize, though some might see The Plough. Either way, the star names and the familiar outlines will appear in this thoughtfully composed 24 frame mosaic when you slide your cursor over the image. Dubhe, alpha star of the dipper's parent constellation Ursa Major is at the upper right. Together with beta star Merak below, the ..

우주 2017. 3. 13. 20:19

Clouds of glowing hydrogen gas fill this colorful skyscape in the faint but fanciful constellation Monoceros, the Unicorn. A star forming region cataloged as NGC 2264, the complex jumble of cosmic gas and dust is about 2,700 light-years distant and mixes reddish emission nebulae excited by energetic light from newborn stars with dark interstellar dust clouds. Where the otherwise obscuring dust c..

우주 2017. 3. 12. 07:01

Would the Rosette Nebula by any other name look as sweet? The bland New General Catalog designation of NGC 2237 doesn't appear to diminish the appearance of this flowery emission nebula. Inside the nebula lies an open cluster of bright young stars designated NGC 2244. These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebu..

우주 2017. 3. 9. 07:59

Double, double toil and trouble; Fire burn, and cauldron bubble -- maybe Macbeth should have consulted the Witch Head Nebula. The suggestively shaped reflection nebula is associated with the bright star Rigel in the constellation Orion. More formally known as IC 2118, the Witch Head Nebula spans about 50 light-years and is composed of interstellar dust grains reflecting Rigel's starlight. In thi..

우주 2017. 3. 9. 05:10