News tagged with stellar winds

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A pocket of star formation

(PhysOrg.com) -- This new view shows a stellar nursery called NGC 3324. It was taken using the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile. The intense ultraviolet ...

Feb 01, 2012
not rated yet 0 | with audio podcast

The Tarantula glows with X-rays and infrared light

(PhysOrg.com) -- This spiderweb-like tangle of gas and dust is a star-forming region called 30 Doradus. It is one of the largest such regions located close to the Milky Way galaxy, and is found in the neighboring ...

Nov 11, 2011
4.5 / 5 (2) 4

Stellar winds

(PhysOrg.com) -- The Sun, glowing with a surface temperature of about 5500 degrees Celsius, warms the Earth with its salutary light. Meanwhile the Sun's hot outer layer (the corona), with its temperature of ...

Oct 10, 2011
5 / 5 (2) 7 | with audio podcast

Galaxy caught blowing bubbles

(PhysOrg.com) -- Hubble's famous images of galaxies typically show elegant spirals or soft-edged ellipses. But these neat forms are only representative of large galaxies. Smaller galaxies like the dwarf irregular ...

Sep 29, 2011
4.9 / 5 (7) 12 | with audio podcast

Star formation laws

Take a cloud of molecular hydrogen add some turbulence and you get star formation – that’s the law. The efficiency of star formation (how big and how populous they get) is largely a function of the ...

Sep 26, 2011
4.7 / 5 (3) 4

Companion stars could cause unexpected X-rays

Many types of main sequence stars emit in the X-ray portion of the spectra. In massive stars, strong stellar winds ripping through the extended atmosphere of the star create X-ray photons. On lower mass stars, ...

Mar 25, 2011
5 / 5 (1) 3

'Elephant trunks' in space

(PhysOrg.com) -- NASA's Wide-field Infrared Survey Explorer, or WISE, captured this image of a star-forming cloud of dust and gas, called Sh2-284, located in the constellation of Monoceros. Lining up along ...

Mar 07, 2011
5 / 5 (2) 3 | with audio podcast

Hubble finds that puny stars pack a big punch

(PhysOrg.com) -- A deep survey of more than 200,000 stars in our Milky Way galaxy has unveiled the sometimes petulant behavior of tiny red dwarf stars. These stars, which are smaller than the Sun, can unleash ...

Jan 10, 2011
5 / 5 (6) 2 | with audio podcast

WISE image reveals strange specimen in starry sea

(PhysOrg.com) -- A new image from NASA's Wide-field Infrared Survey Explorer shows what looks like a glowing jellyfish floating at the bottom of a dark, speckled sea. In reality, this critter belongs to the ...

Nov 17, 2010
4.9 / 5 (14) 11 | with audio podcast

Recipe for water: Just add starlight

ESA's (European Space Agency) Herschel infrared space observatory has discovered that ultraviolet starlight is a key ingredient for making water in the atmosphere of some stars. It is the only explanation ...

Sep 01, 2010
4.8 / 5 (12) 3 | with audio podcast

Pulverized planet dust might lie around double stars

(PhysOrg.com) -- Tight double-star systems might not be the best places for life to spring up, according to a new study using data from NASA's Spitzer Space Telescope. The infrared observatory spotted a surprisingly ...

Aug 23, 2010
4.4 / 5 (5) 1 | with audio podcast

Superhot Planet Likely Possesses Comet-like Tail

(PhysOrg.com) -- As if the debate over what is and what is not a planet hasn't gotten confusing enough, Hubble Space Telescope astronomers have now confirmed the existence of a tortured, baked object that ...

Jul 15, 2010
4.8 / 5 (9) 3 | with audio podcast