NASA / ESA’s Hubble Space Telescope captured this image of a cosmic ice rink known as Messier 94 (M94) located 16 million light-years from Earth in the constellation Canes Ventici. What most likely caused its peculiar shape was a pressure wave flowing outwards from the galactic center, compressing the gas and dust in the outer region.
The compression of gas and dust means the gas starts to collapse into denser clouds. Within these dense clouds, gravity pulls the gas and dust together until temperature, as well as pressure, are high enough for stars to form. In this image, we can see a central, glowing core that shines in pale yellow, surrounded with spiral arms laced with dark brown dust.
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Astronomers suggest that the starburst ring in M94 was formed by a pressure wave moving outward from the galaxy’s center—reminiscent of the electrifying energy of fans in a packed arena,” said the NASA Hubble Mission Team.
