Hubble's newest camera eyes hotbed of star formation: A watercolour fantasyland? No. It's actually a photograph of the centre of the Swan Nebula, or M17, a hotbed of newly born stars wrapped in colourful blankets of glowing gas and cradled in an enormous cold, dark hydrogen cloud. This stunning picture was taken by the newly installed Advanced Camera for Surveys (ACS) aboard the NASA/ESA Hubble Space Telescope. The region of the nebula shown in this picture is about 3500 times wider than our Solar System. The area also represents about 60 percent of the total view captured by ACS. The nebula resides 5500 light-years away in the constellation Sagittarius. Like its famous cousin in Orion, the Swan Nebula is illuminated by ultraviolet radiation from young, massive stars - each about six times hotter and 30 times more massive than the Sun - located just beyond the upper right corner of the image. The powerful radiation from these stars evaporates and erodes the dense cloud of cold gas within which the stars formed. The blistered walls of the hollow cloud shine primarily in the blue, green, and red light emitted by excited atoms of hydrogen, nitrogen, oxygen, and sulphur. Particularly striking is the rose-like feature, seen to the right of centre, which glows in the red light emitted by hydrogen and sulphur. As the infant stars evaporate the surrounding cloud, they expose dense pockets of gas that may contain developing stars. Because these dense pockets are more resistant to the withering radiation than the surrounding cloud, they appear as sculptures in the walls of the cloud or as isolated islands in a sea of glowing gas. One isolated pocket is seen at the centre of the brightest region of the nebula and is about 10 times larger than our Solar System. Other dense pockets of gas have formed the remarkable feature jutting inward from the left edge of the image, which resembles the famous Horsehead Nebula in Orion. The ACS made this observation on 1 and 2 April 2002. The colour image is constructed from four separate images taken in these filters: blue, near infrared, hydrogen alpha, and doubly ionised oxygen. Image credit: NASA, the ACS Science Team (H. Ford, G. Illingworth, M. Clampin, G. Hartig, T. Allen, K. Anderson, F. Bartko, N. Benitez, J. Blakeslee, R. Bouwens, T. Broadhurst, R. Brown, C. Burrows, D. Campbell, E. Cheng, N. Cross, P. Feldman, M. Franx, D. Golimowski, C. Gronwall, R. Kimble, J. Krist, M. Lesser, D. Magee, A. Martel, W. J. McCann, G. Meurer, G. Miley, M. Postman, P. Rosati, M. Sirianni, W. Sparks, P. Sullivan, H. Tran, Z. Tsvetanov, R. White, and R. Woodruff) and ESA

Name: Messier 17, Omega Nebula, Swan Nebula
Type: Milky Way : Nebula : Type : Star Formation
Category: Nebulae
Constellation: Sagittarius
Distance: 5500 light years
Release date: 30 April 2002, 15:00
Credit: NASA, Holland Ford (JHU), the ACS Science Team and ESA

UGC 10214 (ACS Full Field Image): A colliding galaxy dubbed the "Tadpole" (catalog name UGC10214) is set against a rich tapestry of 6,000 galaxies. The Tadpole, with its long tail of stars, looks like a runaway pinwheel firework, unlike the textbook images of stately spiral galaxies. Its distorted shape was caused by a small interloper, a very blue, compact galaxy visible near the more massive Tadpole. The Tadpole resides about 420 million light-years away in the constellation Draco. Seen shining through the Tadpole's disk, the tiny intruder is likely a hit-and-run galaxy that is now leaving the scene of the accident. Strong gravitational forces from the interaction created the long tail of debris, consisting of stars and gas that stretch out more than 280,000 light-years.

Name: Tadpole Galaxy, UGC 10214
Type: Local Universe : Galaxy : Type : SpiralLocal Universe : Galaxy : Type : Barred
Category: Galaxies
Constellation: Draco
Distance: 400 million light years
Release date: 30 April 2002, 15:00
Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESAThe ACS Science Team: H. Ford, G. Illingworth, M. Clampin, G. Hartig, T. Allen, K. Anderson, F. Bartko, N. Benitez, J. Blakeslee, R. Bouwens, T. Broadhurst, R. Brown, C. Burrows, D. Campbell, E. Cheng, N. Cross, P. Feldman, M. Franx, D. Golimowski, C. Gronwall, R. Kimble, J. Krist, M. Lesser, D. Magee, A. Martel, W. J. McCann, G. Meurer, G. Miley, M. Postman, P. Rosati, M. Sirianni, W. Sparks, P. Sullivan, H. Tran, Z. Tsvetanov, R. White, and R. Woodruff.

Cone Nebula/NGC 2264 (ACS Full Field Image): Resembling a nightmarish beast rearing its head from a crimson sea, this monstrous object is actually an innocuous pillar of gas and dust. Called the Cone Nebula (and cataloged NGC 2264) is so named because, in ground-based images, it has a conical shape. This giant pillar resides in a turbulent star-forming region. NASA's Hubble Space Telescope imaged the "Cone Nebula," a nebula close to home. It exhibits a craggy-looking mountaintop of cold gas and dust that is a cousin to Hubble's iconic "pillars of creation" in the Eagle Nebula, photographed in 1995.

Name: Cone Nebula, NGC 2264
Type: Milky Way : Nebula : Appearance : Emission : H II Region
Category: Nebulae
Constellation: Monoceros
Distance: 3000 light years
Release date: 30 April 2002, 15:00
Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESAThe ACS Science Team: H. Ford, G. Illingworth, M. Clampin, G. Hartig, T. Allen, K. Anderson, F. Bartko, N. Benitez, J. Blakeslee, R. Bouwens, T. Broadhurst, R. Brown, C. Burrows, D. Campbell, E. Cheng, N. Cross, P. Feldman, M. Franx, D. Golimowski, C. Gronwall, R. Kimble, J. Krist, M. Lesser, D. Magee, A. Martel, W. J. McCann, G. Meurer, G. Miley, M. Postman, P. Rosati, M. Sirianni, W. Sparks, P. Sullivan, H. Tran, Z. Tsvetanov, R. White, and R. Woodruff.

Omega Nebula/Swan Nebula/M17 (ACS Full Field Image): Peering into a celestial maternity ward called the Omega Nebula or M17, images from NASA's Hubble Space Telescope revealed a watercolor fantasy-world of glowing gases, where stars and perhaps embryonic planetary systems are forming.

Name: Messier 17, NGC 6618, Swan Nebula
Type: Milky Way : Nebula : Type : Star Formation
Category: Nebulae
Constellation: Sagittarius
Distance: 5500 light years
Release date: 30 April 2002, 15:00
Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESAThe ACS Science Team: H. Ford, G. Illingworth, M. Clampin, G. Hartig, T. Allen, K. Anderson, F. Bartko, N. Benitez, J. Blakeslee, R. Bouwens, T. Broadhurst, R. Brown, C. Burrows, D. Campbell, E. Cheng, N. Cross, P. Feldman, M. Franx, D. Golimowski, C. Gronwall, R. Kimble, J. Krist, M. Lesser, D. Magee, A. Martel, W. J. McCann, G. Meurer, G. Miley, M. Postman, P. Rosati, M. Sirianni, W. Sparks, P. Sullivan, H. Tran, Z. Tsvetanov, R. White, and R. Woodruff.