Awesome new Hubble panorama
Posted: Wed Apr 25, 2007 10:34 am
To celebrate Hubble's 17th anniversary (wow, has it really been 17 years? time flies...), NASA has released a really awesome new panorama shot stitched together from multiple hubble images. The picture is of one of the most active regions of star formation in the sky, including a bunch of REALLY big stars (50-100x the mass of the sun) that will, when they die, result in supernovas so bright that their light, while it lasts, will be brighter than the rest of the galaxy combined. (no, I'm not making that up). Literally, you'd be able to see it during the day just fine. (Our sun will look brighter than it to us, because we're so close to the sun.)
Here's their info on the shot:
Sorry for those not interested in this stuff. I'm still an astronomy fan, even though I'm not majoring in it any more, and I think it's an awesome picture.
-Arlos
Here's their info on the shot:
In celebration of the 17th anniversary of the launch and deployment of NASA's Hubble Space Telescope, a team of astronomers is releasing one of the largest panoramic images ever taken with Hubble's cameras. It is a 50-light-year-wide view of the central region of the Carina Nebula where a maelstrom of star birth - and death - is taking place.
Hubble's view of the nebula shows star birth in a new level of detail. The fantasy-like landscape of the nebula is sculpted by the action of outflowing winds and scorching ultraviolet radiation from the monster stars that inhabit this inferno. In the process, these stars are shredding the surrounding material that is the last vestige of the giant cloud from which the stars were born.
The immense nebula contains at least a dozen brilliant stars that are roughly estimated to be at least 50 to 100 times the mass of our Sun. The most unique and opulent inhabitant is the star Eta Carinae, at far left. Eta Carinae is in the final stages of its brief and eruptive lifespan, as evidenced by two billowing lobes of gas and dust that presage its upcoming explosion as a titanic supernova.
The fireworks in the Carina region started three million years ago when the nebula's first generation of newborn stars condensed and ignited in the middle of a huge cloud of cold molecular hydrogen. Radiation from these stars carved out an expanding bubble of hot gas. The island-like clumps of dark clouds scattered across the nebula are nodules of dust and gas that are resisting being eaten away by photoionization.
The hurricane blast of stellar winds and blistering ultraviolet radiation within the cavity is now compressing the surrounding walls of cold hydrogen. This is triggering a second stage of new star formation.
Our Sun and our solar system may have been born inside such a cosmic crucible 4.6 billion years ago. In looking at the Carina Nebula we are seeing the genesis of star making as it commonly occurs along the dense spiral arms of a galaxy.
The immense nebula is an estimated 7,500 light-years away in the southern constellation Carina the Keel (of the old southern constellation Argo Navis, the ship of Jason and the Argonauts, from Greek mythology).
This image is a mosaic of the Carina Nebula assembled from 48 frames taken with Hubble Space Telescope's Advanced Camera for Surveys. The Hubble images were taken in the light of neutral hydrogen. Color information was added with data taken at the Cerro Tololo Inter-American Observatory (CTIO) in Chile. Red corresponds to sulfur, green to hydrogen, and blue to oxygen emission.
Sorry for those not interested in this stuff. I'm still an astronomy fan, even though I'm not majoring in it any more, and I think it's an awesome picture.
-Arlos
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