A head-on collision with another galaxy billions of years ago may have dramatically reoriented the Milky Way’s disk, according to new supercomputer simulations that reveal how violent mergers can leave spiral galaxies looking surprisingly normal today.

The post Our Milky Way Galaxy Likely Underwent Disk Flip after Ancient Galactic Collision: Study appeared first on Sci.News: Breaking Science News.

The interstellar comet 3I/ATLAS carries a chemical fingerprint unlike anything in our Solar System, and it may have formed 10 to 12 billion years ago, before our Sun even existed, according to two papers published in the journal Nature.

The post Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest appeared first on Sci.News: Breaking Science News.