Estimate Request for the image
S02904
To make a request for several images, go back to the
Picture Library
and add them to the Light Box.
Add to my light box
View my light box
Ref :
S02904
Theme :
Nebulas
(144 images)
Title :
Giant Twisters in the Lagoon Nebula
Caption :
This NASA Hubble Space Telescope (HST) image reveals a pair of one-half light-year long interstellar 'twisters,' eerie funnels and twisted-rope structures in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light-years away in the direction of the constellation Sagittarius. The central hot star, O Herschel 36 (lower right), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds, combined with the pressure of starlight, may produce strong horizontal shear to twist the clouds into their tornado-like appearance. Though the spiral shapes suggest the clouds are 'twisting,' future observations will be needed, perhaps with Hubble's next generation instruments, with the spectroscopic capabilities of the Space Telescope Imaging Spectrograph (STIS) or the Near Infrared Camera and Multi-Object Spectrometer (NICMOS), to actually measure velocities. These color-coded images are the combination of individual exposures taken in July and September, 1995 with Hubble's Wide Field and Planetary Camera 2 (WFPC2) through three narrow-band filters (red light ionized sulphur atoms, blue light, double ionized oxygen atoms, green light, ionized hydrogen).
to specify how you want to use these images. You can also send your request by
E-mail
To make a request for several images, go back to the
Picture Library
and add them to the Light Box.
Image(s) use :
----------- Specify usage --------------
Advertising
Advertising in Press
Press
Publishing
CD Rom-Internet
Movie-Video-TV
Non-commercial
Private use
Other, please specify
Reproduction format of the image in the final document :
----------- Specify format ---------------
Up to 1/8 page
Up to 1/4 page
Up to 1/2 page
Up to 3/4 page
Up to full page
Double page
Front or Back cover
Other, please specify
Print run of the document on which the image is reproduced :
----------- Specify print run ------------
1 to 100
101 to 500
501 to 1000
1001 to 2000
2001 to 2500
2501 to 5000
5001 to 10 000
10 001 to 25 000
25 001 to 50 000
50 001 to 100 000
100 001 to 500 000
500 001 to 1 000 000
Other, please specify
Number of consecutive uses :
--------- Specify number of uses -------
1
2
3
4
5
6
7
8
9
10
11
12
Other, please specify
If image is reproduced in the Press, please specify number of titles :
If image is reproduced as a poster
please specify size of the poster :
------- Specify poster format ---------
Up to 50 x 60 cm
Up to 80 x 120 cm
Up to 240 x 300 cm
Up to 360 x 480 cm
Other, please specify
Give all useful information or specify the use of the image(s) in this box :