Essentials
theDiagonal is a personal blog by Mike Gerra, skeptic, technologist, psychologist, artist, humanist, collector of grand, eclectic ideas.theDiagonal blog connects the dots across multiple disciplines for inquisitive, objective and critical thinkers, exploring the vertices of big science, disruptive innovation, global sustainability, illuminating literature and leftfield art. It is on this diagonal that creativity thrives, big ideas take flight and reason triumphs.
Tag Archives: collision
Sunday, July 15, 2012
100 Million Year Old Galactic Echo
Cosmologists have found what they believe to be the echoes of a galactic collision some 100 million years ago with our own Milky Way galaxy.
From Symmetry Magazine:
Our galaxy, the Milky Way, is a large spiral galaxy surrounded by dozens of smaller satellite galaxies. Scientists have long theorized that occasionally these satellites will pass through the disk of the Milky Way, perturbing both the satellite and the disk. A team of astronomers from Canada and the United States have discovered what may well be the smoking gun of such an encounter, one that occurred close to our position in the galaxy and relatively recently, at least in the cosmological sense.
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