Antennae Galaxies NGC 4038 & 4039, two spiral galaxies starting to interact a few hundred million yrs ago Img1 wide-field view https://t.co/i9MhPqWJZw Img2 false-color Img from Spitzer Telescope https://t.co/NOem6BMjdX Img3 https://t.co/Y8NaNTnTVH

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