Pan of Spiral Galaxy Messier 90: Best View Yet | Hubble Space Telescope
The inner regions of M90’s disc are sites of star formation. This is highlighted here by red H-alpha light from nebulae, but this is absent in the rest of the galaxy. M90 sits among the galaxies of the relatively nearby Virgo Cluster, and the course of its orbit took it on a path near the cluster’s centre about three hundred million years ago. The density of gas in the inner cluster weighed on M90 like a strong headwind, stripping enormous quantities of gas from the galaxy and creating the diffuse halo that can be seen around it here. This gas is no longer available for M90 to form new stars with, and it will eventually fade as a spiral galaxy as a result.
M90 is located 55 million light-years from Earth, but it is one of the very few galaxies getting closer to us. Its orbit through the Virgo cluster has accelerated it so much that it is in the process of escaping the cluster entirely, and by happenstance it is moving in our direction—other galaxies in the Virgo cluster have been measured at similar speeds, but in the opposite direction. Over the coming billions of years, we will be treated to a yet better view of M90 while it evolves into a lenticular galaxy.
Image Description: A spiral galaxy. It has a bright core with light spilling out, and its disc is filled with thick clumps of dark reddish dust that swirls around the galaxy following its rotation. Parts of the disc are speckled with blue, showing brighter and hotter stars. A halo of faintly-lit gas wraps around the galaxy, extending beyond the edges of the image.
Credit: European Space Agency/Hubble & NASA, D. Thilker, J. Lee and the PHANGS-HST Team, N. Bartmann (ESA/Hubble)
Duration: 30 seconds
Release Date: Oct. 14, 2024
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