Nebula

 Cosmic Tribune

Dying, nearby dwarf star is 12 time hotter than our sun

Dying, nearby dwarf star is 12 time hotter than our sun

[CLICK ON IMAGE FOR HIGH RESOLUTION, Adam Block, Mt. Lemmon SkyCenter, Univ. Arizona] The gorgeous, gaseous shroud of a dying sun-like star, planetary nebula Abell 36 lies a mere 800 light-years away in the constellation of Virgo. Shrugging off its outer layers, the nebula’s central star is contracting and becoming hotter, evolving towards a final […]

 Cosmic Tribune

Bubble-shaped nebula created by pre-supernova only 70,000 years old

Bubble-shaped nebula created by pre-supernova only 70,000 years old

[CLICK ON IMAGE FOR HIGH RESOLUTION, Jeff Husted] Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 it lies some 5,200 light-years away toward the constellation of the Big Dog (Canis Major) and covers slightly more of the sky than a Full Moon. … The massive […]

 Cosmic Tribune

Alnitak, Alnilam, Mintaka: The glorious belt of Orion

Alnitak, Alnilam, Mintaka: The glorious belt of Orion

[CLICK ON IMAGE FOR HIGH RESOLUTION /  Rogelio Bernal Andreo] Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie about 1,500 light-years away, born of Orion’s well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have […]

 Cosmic Tribune

NGC 2170: Celestial still life with a cosmic brush

NGC 2170: Celestial still life with a cosmic brush

[FOR HIGH RESOLUTION, CLICK ON IMAGE] / Adam Block, Mt. Lemmon SkyCenter, U. Arizona] The beautiful, dusty nebula NGC 2170 shines at the upper left. Reflecting the light of nearby hot stars, NGC 2170 is joined by other bluish reflection nebulae, a compact red emission region, and streamers of obscuring dust against a backdrop of […]

 Cosmic Tribune

The Ring Nebula (M57): Gas cloud from a dying nearby sun-like star

The Ring Nebula (M57): Gas cloud from a dying nearby sun-like star

[CLICK ON IMAGE FOR HIGH RESOLUTION], NASA, ESA,  and the Hubble Heritage The Ring Nebula (M57) is probably [next to Saturn’s rings] the most famous celestial band. … The recent mapping of the expanding nebula’s 3-D structure, based in part on this clear Hubble image, indicates that the nebula is a relatively dense, donut-like ring […]

 Cosmic Tribune

Aurigae, the blue-hot center of the Flaming Star Nebula

Aurigae, the blue-hot center of the Flaming Star Nebula

[CLICK ON IMAGE FOR HIGH RESOLUTION / Martin Pugh] AE Aurigae is called the flaming star. The surrounding nebula IC 405 is named the Flaming Star Nebula and the region seems to harbor smoke, but there is no fire. … The bright star AE Aurigae, visible near the nebula center, is so hot it is […]

 Cosmic Tribune

What to see with your shiny new telescope

What to see with your shiny new telescope

As the gift-giving season comes to an end, maybe now you’ve got a shiny new telescope to call your own. Congratulations — you’re on your way to discovering many amazing things in the night sky. Be it a long, sleek tube or a compact marvel of computerized wizardry, every new telescope surely has an owner […]

 Cosmic Tribune

Merry Yosemite Christmas!

Merry Yosemite Christmas!

[CLICK ON IMAGE FOR HIGH RESOLUTION / Wally Pacholka / AstroPics.com, TWAN A starry band of the Milky Way climbs over Yosemite Valley, Sierra Nevada Range, planet Earth. Jupiter is the brightest celestial beacon on the wintry scene, though. Standing nearly opposite the Sun in the constellation Taurus, the wandering planet joins yellowish Aldebaran and […]

 Cosmic Tribune

All that’s left of a star in our galaxy that exploded 9,000 years ago

All that’s left of a star in our galaxy that exploded 9,000 years ago

FOR HIGH RESOLUTION, CLICK ON IMAGE. Wisps like this are all that remain visible of a Milky Way star. About 9,000 years ago that star exploded in a supernova leaving the Veil Nebula, also known as the Cygnus Loop. At the time, the expanding cloud was likely as bright as a crescent Moon, remaining visible […]

 Cosmic Tribune

What will happen when the sun burns through its core hydrogen?

What will happen when the sun burns through its core hydrogen?

[CLICK ON IMAGE FOR HIGH RESOLUTION] Is this what will become of our Sun? Quite possibly. The bubble of expanding gas pictured above is the planetary nebula PK 164 +31.1, the remnants of the atmosphere of a Sun-like star expelled as its supply of fusion-able core hydrogen became depleted. Visible near the center of the […]