[Jay Lake Memorial link salad] Friday April 21 edition

Spiral Galaxies Shimmer in Hubble Telescope's 27th Birthday Photos.

Mystery human hobbit ancestor may have been first out of Africa.

Maurice Conti: Can Machines Think And Feel For Themselves?

Marie Brennan on New Worlds: Names and Their Meaning

Is It Safe To Eat Moldy Bread?

And, for Tolkien geeks and fans of Galadriel: The Trial of Galadriel, by Jeff LaSala.