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Most spiral galaxies — around two thirds — are observed to have this feature
an immense cauldron of gas and dust that lies approximately 7500 light-years from Earth in the constellation of Carina
The Hubble observations
The luminous heart of NGC 6814 is a highly variable source of X-ray radiation
The galactic panorama unveils a tapestry of the drama of stellar birth and death
HD 40307g - Super Earth Size:36" x 24" (91 cm x 61 cm) Most spiral galaxies — aroundTwice as big in volume as the Earth, HD 40307g straddles the line between "Super Earth" and "mini Neptune" and scientists aren't sure if it has a rocky surface or one that's buried beneath thick layers of gas and ice. One thing is certain though: at eight times the Earth's mass, its gravitational pull is much, much stronger. Image Credit: JPL NASA
