NASA may have discovered  the first evidence of a planet outside of the the Milky Way.

In the Messier 51 (M51) Whirlpool Galaxy.

It's an exciting discovery but more data is required to confirm the planet candidate's location and the method use here may not be viable again for another 70 years because of its wide orbit.

[ Main Image: Messier 51 (M51) Whirlpool Galaxy. Credit: NASA via Twitter. ]

References

Lee Mohon. (October 26, 2021). Chandra Sees Evidence for Possible Planet in Another Galaxy. NASA.

NASA [@NASA] (October 26, 2021). NEW: Scientists may have detected evidence of a planet candidate orbiting a star outside our Milky Way galaxy for the first time. Twitter.