A figure-eight shape which is red on the left, white in the middle and blue on the right is centered in the core of the Milky Way. A diagonal line cuts across the upper part of the figure eight and ends in a star that indicates the distant quasar; our Sun is on the opposite end of the line. An inset graph with dips and peaks shows the measurement of expansion velocity using the red, white and blue colors on the illustration.

Hubble maps velocity and composition of mysterious lobes expanding from our galaxy

Hubble maps velocity and composition of mysterious lobes expanding from our galaxy.

Credits: NASA, ESA, A. Fox and A. Feild (STScI)
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Image CreditNASA, ESA, A. Fox and A. Feild (STScI)
Size640x580px