天导小组讨论 计科 20 赵锦煦
p21.56 apod.nasa.gov/apod APOD: Astronomy Picture of the Day April 22, 2016: The Bubble Nebula APOD: Astronomy Picture of the Day April 22, 2016: The Bubble Nebula
The Bubble Nebula
Was the image or video taken from Earth or from space ? Is it a combination of several images? Yes. A combination of 3 pictures with different filters. Does it show Earth, our Solar System, objects in our Milky Way Galaxy, more distant galaxies, or something else? 7,100 light-years, constellation Cassiopeia (仙后座) Was the image or video taken from Earth or from space ? Is it a combination of several images? Yes. A combination of 3 pictures with different filters. Does it show Earth, our Solar System, objects in our Milky Way Galaxy, more distant galaxies, or something else? 7,100 light-years, constellation Cassiopeia (仙后座)
The Bubble Nebula Is the explanation understandable to someone who has not studied astronomy? Do you think this website promotes a general interest in astronomy? Is the explanation understandable to someone who has not studied astronomy? Do you think this website promotes a general interest in astronomy?
The Bubble Nebula
7 light-year diameter Above and left of the Bubble's center is a hot, O-type star, several hundred thousand times more luminous and around 45 times more massive than the Sun. A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. 7 light-year diameter Above and left of the Bubble's center is a hot, O-type star, several hundred thousand times more luminous and around 45 times more massive than the Sun. A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud.
The WFC3 The Wide Field Camera 3 (WFC3) is the Hubble Space Telescope's last and most technologically advanced instrument to take images in the visible spectrum. It was installed as a replacement for the Wide Field and Planetary Camera 2 during the first spacewalk of Space Shuttle mission STS-125 on May 14, Replacement to WFC2: degradation of the CCDs, resulting in defective ("hot") pixels. The Wide Field Camera 3 (WFC3) is the Hubble Space Telescope's last and most technologically advanced instrument to take images in the visible spectrum. It was installed as a replacement for the Wide Field and Planetary Camera 2 during the first spacewalk of Space Shuttle mission STS-125 on May 14, Replacement to WFC2: degradation of the CCDs, resulting in defective ("hot") pixels.