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Archive | Galaxies

Building Galaxies

I just finished watching the Universe series episode on “Alien Galaxies.” I have to admit that their constant use of the word “Alien” forced me to look up the word alien in the dictionary (or at least on I have to admit that while it is legitimate to call galaxies alien, it’s probably a […]

Finding Dark Galaxies

One of the great mysteries of our universe is whether there are dark matter galaxies, devoid of stars, haunting the universe. From the COSMOS survey, we know that dark matter and visible matter are not always located in the same place. This implies that there may be galaxies out there made entirely out of dark […]

It’s raining stars!

It has long been known that there are stellar interlopers in the solar neighborhood. These stars just passing through as they orbit the galaxy on a path that originates in galactic halo. Unlike the stars like the sun that normally live in the galactic disk, these stars are poor in metals (have low amounts of […]