Hubble Space Telescope | The Plumes of Europa: Ice, Water, Life? @hubblespacetelescope | Uploaded April 2018 | Updated October 2024, 14 hours ago.
The Plumes of Europa: Ice, Water, Life?
Susana Deustua, Space Telescope Science Institute
Europa is one of the four moons of Jupiter discovered by Galileo in 1610. Four hundred years later, the Voyager and Galileo space probes took stunning images of Europa, revealing an icy surface crisscrossed by linear fractures. Four years ago, astronomers using the Hubble Space Telescope found evidence for plumes of water emerging from Europa’s icy surface. Ultraviolet spectroscopy detected emission indicative of water, and ultraviolet imaging of Europa as it transits Jupiter showed absorption patches suggestive of plumes. If there is liquid water on Europa, will future missions to Europa find evidence of life?
Host: Dr. Frank Summers
Recorded live on Tuesday, April 3 at the Space Telescope Science Institute in Baltimore, Maryland, U.S.A.
For more information: http://hubble.stsci.edu/about_us/public_talks/
The Plumes of Europa: Ice, Water, Life?
Susana Deustua, Space Telescope Science Institute
Europa is one of the four moons of Jupiter discovered by Galileo in 1610. Four hundred years later, the Voyager and Galileo space probes took stunning images of Europa, revealing an icy surface crisscrossed by linear fractures. Four years ago, astronomers using the Hubble Space Telescope found evidence for plumes of water emerging from Europa’s icy surface. Ultraviolet spectroscopy detected emission indicative of water, and ultraviolet imaging of Europa as it transits Jupiter showed absorption patches suggestive of plumes. If there is liquid water on Europa, will future missions to Europa find evidence of life?
Host: Dr. Frank Summers
Recorded live on Tuesday, April 3 at the Space Telescope Science Institute in Baltimore, Maryland, U.S.A.
For more information: http://hubble.stsci.edu/about_us/public_talks/
![Globular Star Cluster Exploration [Dome Version]](https://i.ytimg.com/vi/iNJXgMNSxNo/hqdefault.jpg "Globular Star Cluster Exploration [Dome Version]
This movie is a low resolution preview of the hemispheric projection sequence for planetarium domes.
This scientific visualization presents a flight to a small globular star cluster and a few hundred thousand years of its development. Globular star clusters contain many thousands to millions of stars all orbiting around their common center of gravity. During the flight to and around the globular star cluster, time has been stopped to allow one to examine the structure of the cluster. After arrival, the stars begin their swarming orbits.
The visualization uses data from a simulation that followed the orbits of 6144 stars using the special purpose supercomputer GRAPE-4. This small globular star cluster is simulated in its early stages, with the sample of stars drawn from a zero-age main sequence. Hence, there are many more blue stars than would be found in a typical old globular cluster. The star brightnesses are calculated and calibrated to approximate what the human eye would see. The colors are a bit exaggerated in an attempt to compensate for desaturation during dome projection. For context, the globular cluster is placed within a random star field taken from the Yale Bright Star Catalog. The piece of the simulation shown here covers about 122 thousand years of the star cluster’s development. Time passes at a rate of about 2350 years per second, which corresponds to 78 years per frame at 30 frames per second.
The full resolution planetarium dome sequence is available at: http://hubblesite.org/video/906/
Visualization: Frank Summers (STScI)
Simulation: Simon Portegies Zwart (Boston University)")
![30 Doradus: A Massive Star-Forming Region [Ultra HD]](https://i.ytimg.com/vi/ipkFIgXYDZQ/hqdefault.jpg "30 Doradus: A Massive Star-Forming Region [Ultra HD]
30 Doradus (the Tarantula Nebula) is a very bright and active star-forming region outside of the Milky Way galaxy, at 160,000 light-years away. “30 Dor” is home to the central star cluster NGC 2070, including the most active region, R136, which appears in the central-right area of the image. R136 is a few million years old and contains many thousands of young stars, including several of the largest known. The bright blue stars shine out of the cleared cavity that is excavated by stellar winds. The redder stars are still partially embedded in the cloud material, seen in shadow except where illuminated by the cavity stars. In the infrared view the embedded stars shine more clearly through the intervening cloud material.
Video Credit: NASA, ESA, G.Bacon (STScI)
Image Credit: NASA, ESA, F. Paresce (INAF-IASF, Bologna, Italy), R. OConnell (University of Virginia, Charlottesville), and the Wide Field Camera 3 Science Oversight Committee")
