A series of photos taken from space more than 20 years ago revealed thousands of unknown galaxies in a tiny patch of "empty" space. It was taken over the course of 10 days from the Hubble Space Telescope and has prompted astronomers and other scientists to speculate about universe's size, shape, and age.
To the untrained eye, Photo 51 was simply a grainy black and white image of dark marks scattered in a rough cross shape. They and others believed that finding the simple structure of the DNA molecule would answer a great mystery, how do organisms live, grow, develop, and survive, generation after generation?
Weighing as much as a small car, a rover named Curiosity rolls quietly around Mars. Curiosity's instruments collect data and its cameras take images of the Mars landscape, including self-portraits, in vivid color and detail.
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