In memory of brave explorers
The space shuttle challenger explodes 73 seconds after takeoff on Jan. 28, 1986, at Kennedy Space Center, Florida. This picture shows the main engine exhaust, solid rocket booster plume and an expanding ball of gas from the external tank, visible seconds after the space shuttle Challenger exploded. The seven crew members perished in the explosion. One of the shuttle's booster rockets, whose faulty O-rings were blamed for the disaster, shoots off to the right. (AP Photo/NASA)
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The past week has marked the anniversaries of three NASA tragedies: Apollo 1, Space Shuttle …
Second wall planned across Arizona as Trump administration doubles down on border
